Rhodium

Firmetal, 2018-08-17 09:22:00 PM

Rhodium, is a silvery white hard metal with high reflectivity. Rhodium metal typically does not form oxides, and even when heated, oxygen in the atmosphere is only absorbed at the point of heating to the melting point of rhodium, but is released during solidification. Rhodium has a higher melting point than platinum and a lower density than platinum. Rhodium is insoluble in most acids. It is completely insoluble in nitric acid and slightly soluble in aqua regia. The element symbol Rh, derived from rhodon, meaning "rose", was discovered and separated by vlaston in 1803 because the solution of rhodium salt presented the reddish color of the rose. Rhodium belongs to platinum elements.

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Extraction and smelting of indium

Firmetal, 2018-08-16 09:21:00 PM

At present, there are two kinds of indium, indium primary and indium secondary. Primary indium is mainly extracted from raw ore and is the main source of smelting indium at present. Recycled indium is the smelting of waste metals, mainly as a by-product of the smelting process of ores such as lead, zinc, copper and tin, but the total amount of recycled indium is not large.

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Hafnium silk

Firmetal, 2018-08-13 09:07:00 PM

Hafnium wire, made of hafnium metal. In nature, hafnium is often symbiotic with zirconium, and all zirconium containing minerals contain hafnium. Hafnium and zirconium are similar in quality, and hafnium are mainly found in zirconium quartzite. The amount of HfO2 in industrial zircons is 0.5-2%. The beryllium zircons in the secondary zirconium ore contain up to 15% HfO2. There is also a metamorphic zircon, which contains more than 5% HfO2. The latter two minerals have few reserves and are not yet used in industry. Hafnium is mainly recovered during the production of zirconium.

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Rhenium tungsten thermocouple

Firmetal, 2018-08-10 09:01:00 PM

Rhenium tungsten thermocouple is high temperature resistant thermocouple. It has the advantages of good linear relation between temperature and potential, reliable thermal stability and low price. It can measure the temperature of liquid, steam and gas media directly. It can partially replace platinum rhodium thermocouple as a high and new metallurgical industry, high temperature electronic thermoelectric system structure engineering and space vehicle for nuclear reactors. The relationship between rhenium tungsten thermocouple thermoelectric potential and temperature conforms to zbn05003-88 scale, which is equivalent to astme 696-84 standard. In a vacuum, reduction, inert atmosphere, can be used within 0 ~ 2300 ℃. The use of special protection tube of tungsten-rhenium accidentally can also in the oxidation atmosphere of the long-term use under 1600 ℃, its price lower than platinum rhodium thermocouple.

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Palladium membrane

Firmetal, 2018-08-09 09:25:00 PM

Palladium membrane usually refers to the tubular or sheet metal palladium or palladium alloy. The structure can be divided into two types: self-supporting type and loading type (also called composite membrane). The dense palladium membrane has the only hydrogen penetration. Therefore, the research on palladium membrane is of great significance in hydrogen purification. In addition, because of the unique purification performance of palladium alloy membrane diffusion method, it is incomparable with other physical or chemical methods, and is the main process of hydrogen isotope extraction, separation and purification at present.

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Analysis of corrosion causes of metal materials

Firmetal, 2018-08-08 09:15:00 PM

Corrosion resistance is affected by the environment. For example, monel alloy is a corrosion resistant metal material, but it is only used for corrosion protection of chloride, seawater and alkali, and it is not used in nitric acid, acid iron salt, tin salt, hydrochloric acid or high concentration sulfuric acid. So what are the corrosion reasons of metal materials?

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Titanium alloy stent is expected to be reduced

Firmetal, 2018-08-07 09:10:00 PM

Titanium powder is required for 3D printing of titanium alloy parts, but this important raw material has long been imported. "Additive manufacturing" is actually the scientific name of 3D printing. Titanium has the characteristics of light texture, good flexibility and so on. However, the stability and consistency of titanium powder produced in China are poor, so the performance of printing parts fluctuates greatly, which affects the batch application of 3D printing titanium alloy components in important projects.

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Nuclear grade zirconium alloy products completed the process of trial production

Firmetal, 2018-08-03 09:11:00 PM

Nuclear fuel is uranium, which was burned into small cylindrical uranium oxide ceramic pellets, piled up in the tube made of zirconium alloy cladding, make it their slender rods, and the fuel rods according to certain rules are assembled into a fuel assembly, is available for plant use. The reactor core at the plant contains hundreds of such nuclear fuel assemblies, weighing dozens of tons. Zirconium alloy is a nonferrous alloy with zirconium as the base and other elements added. With the constant improvement of the performance requirements of nuclear fuel components, developed has good mechanical properties, corrosion resistance and radiation resistance of high performance nuclear grade zirconium alloys has been the nuclear main research direction of the advanced countries. Nuclear grade zirconium alloy and high performance in the high temperature and high pressure steam and water is a must have good corrosion resistance and mechanical properties of moderate and low atom thermal neutron absorption cross section, has good compatibility to the nuclear fuel, so only can be used as a water-cooled nuclear reactor core structure materials (fuel cladding, pressure pipe, bracket and channel), which is the main purpose of the zirconium alloy.

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Welding process selection of titanium alloy

Firmetal, 2018-08-02 09:11:00 PM

The surface quality of welded parts and titanium welding wire has a great influence on the mechanical properties of welded joints. Iron plate and titanium welding wire can be mechanically cleaned and chemically cleaned.

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Development of precious metal catalysts and new materials

Firmetal, 2018-08-01 09:21:00 PM

Platinum-group metals have the advantages of excellent catalytic activity, high selectivity, long service life and recyclable regeneration. Their research and development are of great significance to industrial and social development.

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Classification of molybdenum ores

Firmetal, 2018-07-31 09:15:00 PM

The main useful component of ore (the main useful component refers to the main component of ore which has economic value and can be extracted and utilized independently under the current technical and economic conditions). For molybdenum, China's yanjizhangzi molybdenum mine in liaoning province, jinduicheng molybdenum mine in shaanxi province, luanchuan molybdenum mine in henan province, ruyang molybdenum mine and Climax mine in the United States are all single molybdenum ores. In China, the reserves of single molybdenum ore only account for about 14% of the total reserves in China.

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Applications of precious metals

Firmetal, 2018-07-30 09:17:00 PM

Precious metal elements with excellent physical and chemical properties (such as high temperature oxidation resistance and corrosion resistance, electrical properties, excellent electrical conductivity, high temperature thermoelectric performance and stable temperature coefficient of resistance, etc.), high catalytic activity, strong coordination ability and so on, USES in industry, the application of "small, small, fine, broad", the characteristics of modern so called "industrial vitamin". Precious metals are closely related to the development of modern high-tech.

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Titanium alloy hardness

Firmetal, 2018-07-27 09:10:00 PM

Titanium is an important structural metal developed in the 1950s. It has high strength, corrosion resistance and heat resistance. In the 1950s and 1960s, the development of high temperature titanium alloy for aero-engine and structural titanium alloy for airframe was mainly carried out. A number of corrosion resistant titanium alloys were developed in the 1970s. Since the 1980s, corrosion resistant titanium alloys and high strength titanium alloys have been further developed. Titanium alloy is mainly used to make aircraft engine compressor parts, followed by rocket, missile and high-speed aircraft structural parts.

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Lanthanated tungsten electrodes

Firmetal, 2018-07-13 09:15:00 PM

Lanthanated tungsten electrode is European countries introduced in the eighty s hope replace thorium tungsten products improved varieties, once launched, with its excellent welding performance attention and is very popular in international welding area, especially the European welding academic, for this reason, the lanthanum tungsten volume after the thorium-tungsten electrode, but awareness is not high in the domestic market. Its characteristic is that the conductivity is closest to 2% thorium tungsten electrode, the durable current is high and the burn rate is low.

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Cerium tungsten alloy

Firmetal, 2018-07-12 09:11:00 PM

The content of cerium dioxide in common alloys is 1% ~ 2%. It is used instead of thorium tungsten alloys to avoid radioactive contamination. It is type dispersion strengthened alloy, CeO2 exist in particle dispersion in tungsten alloy, thus improve the high temperature strength of tungsten alloy, recrystallization temperature and high temperature creep properties, at the same time improve the thermionic emission performance. The preparation method of tungsten-cerium alloy is the same as that of thorium tungsten-thorium alloy.

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PVD coating is a process

Firmetal, 2018-07-10 09:18:00 PM

PVD, or physical vapor deposition, is an advanced surface treatment technology widely used in the world. Its working principle is under the condition of vacuum, the use of gas discharge so that gas or evaporate part material from, or evaporate substances in gas ions bombard function at the same time the evaporation or their reactants deposition on the substrate. It has the characteristics of fast deposition speed and clean surface, especially the advantages of strong adhesion of film layer, good winding property and wide range of plating materials. The world's advanced magnetron sputtering ion plating and multi-arc ion plating technology equipment, and on this basis with international experts on the process innovation. With more than 10 years of valuable experience in the decorative plating industry, we provide our customers with the most suitable coating processing scheme.

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The manufacturing process of artificial diamonds

Firmetal, 2018-07-10 09:18:00 PM

Production methods
At 2300 ℃, 15 to 180000 atmospheres of high temperature and high pressure environment, in the center of a small natural diamond as a seed, in the kind of drill is surrounded by high temperature metal liquid, on the upper deck of the molten metal is graphite, in such an environment the carbon atoms in graphite can marched toward the diamond out of metal atoms to form new diamond. The Russian group halted research on artificial diamonds after the end of the cold war because of funding problems, and later recovered with funding from U.S. jewelers. In 2005 America's synthetic diamond production line had a capacity of 5 carats an hour. Recently, Russian scientists have developed artificial diamonds with diameters of around 3mm that are completely consistent with the structure of natural diamond crystals. It is believed that with the deepening of research, artificial diamonds like natural diamonds can be made in the near future.

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New super high purity spherical titanium alloy powder

Firmetal, 2018-07-09 09:27:00 PM

Metal powder is the basic and key material of metal 3D printing process. Avant has been committed to the research and development of high quality 3D printing alloy powder materials. It is reported that avant is developing a new generation of plasma atomization (PA) powder making technology, which will introduce a new super high purity spherical titanium alloy powder product ama-ti6al4v to users around the world.

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Platinum filament alcohol lamp

Firmetal, 2018-07-05 09:25:00 PM

It was 1820, and David, an English chemist, did an experiment in which platinum was wetted with alcohol and then ignited. He found that the alcohol was burning so hard that it made the platinum hot and gave off a very bright light. So David made a platinum wire alcohol lamp and used it to light it. This lamp has been in vogue in Europe for many years.

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Palladium

Firmetal, 2018-07-04 09:09:00 PM

Also known as K platinum, it is an alloy, is made after gold and other white metal fusion. It's called WG(White Gold), which means White Gold. White K gold jewelry commonly used "18K platinum" or "14K platinum". It's essentially 18K gold, but it's white.

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Titanium ring

Firmetal, 2018-07-03 09:32:00 PM

A ring is a decorative ring worn on the finger. Rings can be worn by women and men and can be made of metal, gems, plastic, wood or bone. Throughout history, the ring has been considered a token of love, eternity, loyalty, and honor.

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Application of rhenium tungsten alloy

Firmetal, 2018-07-02 09:25:00 PM

Both tungsten and rhenium are high-melting metals and are widely used in high-temperature fields. But they also have disadvantages, pure tungsten is brittle, recrystallization temperature is very low; Rhenium is poorly processed and expensive. Their applications are greatly restricted. Made components with the rhenium tungsten rhenium tungsten alloy, the alloy overcomes the drawback of pure tungsten and rhenium, has many excellent properties, such as high melting point, high strength, high hardness, high plasticity, high resistivity, high thermoelectric potential value of the recrystallization temperature, high, low vapor pressure, low electron work function and low plastic a brittle transition temperature, etc., at the same time they also have excellent resistance to "water cycle" response performance, the price is lower than the pure rhenium 75 ~ 95%.

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Titanium alloy bicycle and carbon fiber bicycle

Firmetal, 2018-06-29 09:40:00 PM

The density of titanium alloy is bigger than aluminum alloy, but smaller than steel.

Titanium alloy frame is lighter than aluminum alloy frame, however, because a larger than aluminum alloy, the strength of the titanium alloy made of titanium alloy frame can minimize while guarantee the strength of the materials, so although is greater than the density of aluminum alloy, titanium alloy product titanium frame is more lighter than aluminium frame.

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Titanium mesh

Firmetal, 2018-06-28 09:55:00 PM

Titanium mesh is mainly used for screening and filtration under acid and alkali environment, or for separation of gases, liquids and other media. Titanium mesh can be applied to high temperature resistant filter, shipbuilding, war industry manufacturing, chemical filter, mechanical filter, electromagnetic shielding wire mesh, mesh, high temperature furnace heat treatment desalination network, oil filter, food processing, medicine, filtering, etc.

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Iridium alloy

Firmetal, 2018-06-27 09:40:00 PM

Iridium alloy can use a small amount of tungsten or hafnium improve the processing properties of iridium, mixed with trace aluminium, iron, thorium, such as improving the impact toughness, so of iridium alloy with high melting point and high temperature strength, good thermal shock resistance, and at high temperature and graphite PuO2 compatible, was chosen for aerospace and nuclear fuel container materials thermoelectric devices for medical use. Iridium and it is used to grow high melting point alloy crucible oxide crystals, it can work in 2100 ~ 2200 ℃ for long and don't react with oxide materials. To save precious metals and reduce the cost of crystal growth, developed in recent years, several kinds of composite crucible, namely in the refractory metal molybdenum, tantalum, and tungsten crucible formed on a certain thickness of iridium or iridium layer, this kind of the service life of crucible co., LTD., widely used at low temperature.

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Cutting of titanium alloy

Firmetal, 2018-06-26 09:50:00 PM

Due to titanium alloy contain a variety of alloy element, which contains some high activation energy element, its status in the alloy is relatively stable, so the titanium alloy in plastic deformation has great energy, also has certain processability. However, the thermal conductivity of titanium alloy is poor. In the cutting process, the cutting heat will be concentrated on the cutting tool. Therefore, the thermal load of titanium alloy material is large and the tool is damaged. Therefore, the common method to improve the production efficiency by increasing the amount of excision per unit time range is not suitable for the processing of titanium alloy materials. Therefore, the proper processing method should be chosen for different titanium alloy materials.

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Iridium wire

Firmetal, 2018-06-25 09:42:00 PM

A thin filamentous metal iridium processing material. Iridium wire resistance coefficient is 6.03 x 10-2 Ω was/m, the tensile strength of 1493 mpa, the elongation is 10% ~ 20%. By powder metallurgy method and fused cast - pressure processing method can produce 0.15 mm Ф filaments. Iridium wire is used as high temperature antioxidant thermocouple material and filament material. Ir - W thermocouple E2200 ℃ = 44.19 mv, within the scope of the 1000 ~ 2000 ℃, the relationship between thermoelectric potential and temperature almost in a straight line, but can only be used in the neutral atmosphere or vacuum.

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Technological innovation and application of zirconium and hafnium materials lead the upgrading of national high-end manufacturing industry

Firmetal, 2018-06-22 09:35:00 PM

In today's world, the level of high-end manufacturing in a country determines the overall level of its military industry and civil industry, while high-end new materials directly determine the level of high-end manufacturing. High - purity zirconium and hafnium are excellent examples of high - end new materials.

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A breakthrough has been made in the development of high strength and toughness porous titanium alloy artificial bone materials

Firmetal, 2018-06-21 09:20:00 PM

Bone defect is a common disease in orthopedics and maxillofacial surgery, which is caused by trauma, infection and tumor resection. Broke through new Gao Jiangren porous titanium alloy structure of the subject design, precise preparation technology, and combining the titanium alloy material manufacturing technology, electron beam in situ preparation of barium titanate piezoelectric ceramic surface treatment technology and ultrasonic treatment in vitro technology, developed a porous titanium alloy artificial bone material that could satisfy the requirement of bone tissue repair.

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Vanadium alloy

Firmetal, 2018-06-20 09:30:00 PM

Vanadium alloy of fast neutron absorption cross section is small, the liquid metal lithium, sodium, potassium, etc. With good corrosion resistance, and good strength and plasticity, good processability, and can resist radiation embrittlement, radiation-hardened swelling, under the irradiation has good dimensional stability, is an important reactor structural materials. Typical vanadium alloys include v-15ti-7.5 Ct, v-15cr-5ti, v-10ti, v-20ti, v-9cr-3fe-1.5 zr-0.05 C. These vanadium alloys are used as fuel sheaths and structural elements for liquid metal cooled fast neutron breeder reactors. Other Vanstar7(v-9cr-3fe-zrc), Vanstar8(v-9cr-3ta-zrc), Vanstar9(v-6fe-3nb-zrc), v-40nb-1.3 Zr, v-9cr-10w-1.5 Zr, v-9cr-10ta-1.25 Zr, etc.

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Palladium metal

Firmetal, 2018-06-19 09:15:00 PM

Palladium is the fifth cycle Ⅷ clan members of platinum group elements, transition metal palladium is silvery white, soft, good ductility and plasticity, forging, rolling and drawing. The massive metal palladium can absorb large amounts of hydrogen gas, making the volume expand significantly, become brittle and even break into fragments. It is a chemical element found in the platinum mine by British chemist wollaston in 1803. It is an indispensable key material in aerospace, aviation and other high-tech fields as well as automobile manufacturing.

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Metal iridium

Firmetal, 2018-06-15 09:25:00 PM

The artificial radioisotope 192Ir was obtained by neutron radiation from the stable element 191Ir.
Decay gives off radioactivity, with a half-life of 74.2d, and is often used in industrial testing. (in normal circumstances, after 10 half-lives of radioactive materials, the radiation intensity is not strong enough to cause harm, and the use of iridium source for industrial detection is a relatively safe option.

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Platinum group metals

Firmetal, 2018-06-14 09:30:00 PM

Platinum group metals, also known as platinum group elements. Six metallic elements, including platinum (Pt), palladium (Pd), osmium (Os), iridium (Ir), ruthenium (Ru) and rhodium (Rh), belong to cycle 5 and 6 in the periodic table. Native element in the gemological application widely, including precious metals palladium jewelry - white to be bestowed favor on newly, the international fashion jewelry platinum, palladium for pge deposit in a minimum of two kinds of mineral and metallurgical properties of the two is quite similar, because its too rare, similar purposes, so often do substitute each other in the various applications.

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Metal welding

Firmetal, 2018-06-13 10:00:00 PM

General welding and brazing (brazing) and soft soldering (soldering) the difference between soft brazing melting by lower melting point (below the melting point of workpiece itself) to form solder connection, without heating melting the artifact itself.
There are many sources of energy for welding, including gas flame, arc, laser, electron beam, friction and ultrasonic wave. In addition to being used in factories, welding can be done in a variety of environments, such as fields, underwater and space. No matter where it is, welding may bring danger to the operator, so proper protective measures must be taken in welding. The possible injuries caused by welding include burns, electrocution, visual impairment, inhalation of toxic gases, and excessive exposure to ultraviolet rays.

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The first elective electron beam melting technique for the production of tantalum surgical implants has been successful

Firmetal, 2018-06-12 09:40:00 PM

Recently, after the patient's postoperative review, theron xian metal material co., LTD. The lattice structure of success will be a custom tantalum knee support components, used for revision surgery was carried out on the 83 - year - old female patient. The company first disclosed its success in adding and manufacturing tantalum components using the selective electron beam melting (SEBM) system in February 2018.

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Vanadium reserves and mineral production

Firmetal, 2018-06-11 09:48:00 PM

In nature, vanadium is difficult to exist in a single body, mainly forming symbiotic ore or compound ore with other minerals. Now find contain vanadium mineral there are more than 70, but the main minerals have the following 3 kinds: vanadium titanium magnetite (in the world except the United States v extraction from potassium vanadium uranium, other countries mainly produce vanadium in extracting vanadium from vanadium titanium magnetite); Potassium vanadium uranium ore (a major source of this mineral in the United States and elsewhere); Petroleum-associated ore (a mineral that lives in crude oil and is increasingly important in central American countries because of its abundance). At present, 98% of the proven reserves of vanadium resources are found in vanadium titanium magnetite, and the content of V2O5 can reach 1.8%.

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Design and technology of nickel-titanium alloy

Firmetal, 2018-06-08 09:40:00 PM

Nickel titanium alloy is the most important and most widely used in shape memory metal alloy, because of its unique memory recovery features, super elasticity, fatigue resistance, and biocompatibility, so it has been applied to cruise too, the people's livelihood, medical and other industries. Is nickel titanium alloy of nickel and titanium in about 50% of the proportion, according to the proportion of alloy, forming process and the heat engine process control, can be adjusted according to different applications to phase transition temperature and mechanical properties of alloy.

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Nickel rhenium alloy

Firmetal, 2018-06-07 09:20:00 PM

Rhenium can increase the creep strength of nickel-high temperature alloys, which can be used to make combustion Chambers, turbine blades and exhaust nozzles for jet engines. Rhenium nickel alloy is the core material of modern jet engine blade, turbine disc and other important structural parts. The use of rhenium can improve the performance of nickel-based high temperature alloys. Alloys can also be made for single crystal blades. Both of these functions allow turbines, especially high-pressure ones, to operate at higher temperatures. In this way, the designers can increase the pressure on the turbine and improve the operating efficiency. Or the engine could speed up fuel combustion and generate more thrust. In addition, the operating temperature can be kept low and the difference between the actual operating temperature and the maximum allowable temperature of the turbine can be increased, thus extending the service life. People can also consider both aspects of the engine and improve the performance and durability of the engine.

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"Smart muscles" make artificial hands more sensitive

Firmetal, 2018-06-06 09:25:00 PM

An artificial hand equipped with a shape memory alloy called muscle has been created that is more flexible and lighter than the current artificial hand. The "muscle fiber" of the hand consists of bundles of ultrafine nickel-titanium wire that can be tensed and bent, allowing the artificial hand to perform more precise movements. The technology could be used in industrial robots as well as new prosthetic limbs.

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Sputtering target application

Firmetal, 2018-06-05 09:30:00 PM

Sputtering target is mainly used in electronics and information industry, such as integrated circuit, information storage, liquid crystal display, laser memory, electronic control devices, etc. It can also be used in the field of glass coating. It can also be used in wear-resistant materials, high temperature corrosion resistant, high - grade decorative products and other industries.

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Classification and application of titanium wire

Firmetal, 2018-06-04 09:25:00 PM

Whether to contain titanium alloy elements can be divided into pure titanium and titanium alloy, and titanium alloy according to its composition and organization of different can be divided into the alpha titanium alloy at room temperature and close alpha type alloy, (alpha + beta) type alloy type, close beta alloy and beta type alloy. Titanium and titanium alloys can be used to prepare silk materials with different requirements according to different properties. Titanium and titanium alloy wire products are generally hard (Y) and annealing (M).

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Analysis on current situation of titanium alloy market

Firmetal, 2018-06-01 09:45:00 PM

Titanium alloy is an alloy based on titanium with other elements added. The density of titanium alloy in 4.51 g/cubic centimeters commonly, only 60% of the steel, the specific strength of titanium alloy (strength/density) than other metal structure material, can make the unit high strength, good rigidity, light components.

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Metal platinum

Firmetal, 2018-05-31 09:50:00 PM

Platinum is a chemical element, whose elemental substance is commonly known as platinum and belongs to the platinum element system. Its chemical symbol Pt is one of precious metals. Atomic weight 195.078, slightly less than that of gold, atomic number 78, is a transition metal. Melting point 1772 ℃, boiling point 3827 + 100 ℃, the density of 21.45 g/cm 3 (20 ℃), soft, good ductility, thermal conductivity and electrical conductivity. As a gray spongy substance, sponge platinum has a large specific surface area and has a strong absorption capacity for gases (especially hydrogen, oxygen and carbon monoxide). Powdered platinum black absorbs large amounts of hydrogen. Platinum chemical inertness, stable in air and humid environment, lower than 450 ℃ when heated, the surface oxide platinum thin film, high temperature can react with sulfur, phosphorus, halogen. Platinum is insoluble in hydrochloric acid, sulfuric acid, nitric acid and alkali solutions, but soluble in royal water and molten alkali.

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