rhenium platinum tungsten

US5372661A

US5372661A US08/087,947 US8794793A US5372661A US 5372661 A US5372661 A US 5372661A US 8794793 A US8794793 A US 8794793A US 5372661 A US5372661 A US 5372661A Authority US United States Prior art keywords alloy molybdenum tungsten rhenium recrystallization temperature Prior art date 1992-02-14 Legal status (The legal status is an assumption and is not a legal conclusion. Get price

Rheniumet Ltd

Rhenium alloy or coating material with tungsten, molybdenum, or platinum group consisting of, because of its high melting point, resistance, good magnetic intensity and environmental stability and is widely used in the electronics industry. 3% -20% Re-doped tungsten or tungsten wire coating H4ReO4, neither as brittle as tungsten Get price

Strategic Materials

With an average concentration of less than 1 ppb (ng/kg), rhenium is one of the rarest elements in the earth's crust. The free element has the third-highest melting point and highest boiling point of any element. Rhenium is also one of the densest elements, exceeded only by platinum Get price

Rhenium tungsten wire

Rhenium tungsten wire Firmetal, 2020-5-13 09:34:00 PM. Rhenium is expensive, and it was not until 1950 that rhenium was transformed from a laboratory curiosity into an important new metal. Rhenium is widely used in various sectors of modern industry, mainly as a catalyst for oil industry and automobile industry, oil reforming catalyst, electronics industry and aerospace industry rhenium alloy. Get price

Thermo Scientific XPS: Knowledge Base

Rhenium, a silver, lustrous metal, has one of the highest melting points of all elements, with only tungsten and platinum being higher. Trace amounts of the element rhenium were discovered spectro- scopically in platinum ores in the minerals columbite, gadolinite, molybdenite and in platinum ores by the German chemists I. Tacke-Noddack, W Get price

Rhenium News, Prices Expert Analysis

Rhenium Rhenium prices. Rhenium My prices My saved comparison The current pricing data is only available to subscribers, please login to see the data or take a trial. Price description Date Change (%) Price Actions; You have no saved prices. To add Get price

The Future of Rhenium

Dec 10, 2018The second most frequent use of rhenium is that of a catalyst. Platinum rhenium catalysts are used to produce high-octane lead-free gasoline. Additionally, rhenium is needed in the form of molybdenum-rhenium alloys in the aviation and electronics industry for reactors, semiconductors, electrical contacts, filaments and ignition wires. Get price

Rhenium

Rhenium in the form of rhenium-platinum alloy is used as catalyst for catalytic reforming, which is a chemical process to convert petroleum refinery naphthas with low octane ratings into high-octane liquid products. Worldwide, 30% of catalysts used for this process contain rhenium. Get price

RHENIUM

Rhenium is a kind of very hard silvery-white metal, it looks like platinum. Rhenium is high melting point metal, only exceeded by tungsten. The chemical property of rhenium is stable and it has strong corrosion resistance. It is not oxidized in the air, acid but alkali has a little corrosion effect on it. Rhenium has extremely high mechanical Get price

DETERMINATION OF RHENIUM IN RHENIUM

article{osti_4015655, title = {DETERMINATION OF RHENIUM IN RHENIUM-TUNGSTEN ALLOY}, author = {Huseya, M}, abstractNote = {Adequate conditions for the stable color-development in the reaction of rhenium with dimethylglyoxime and stannous chloride in the rapid determination of rhenium in rhenium -tungsten alloys by dimethylglyoxime method are Get price

Rhenium

Rhenium does not occur free in nature or as a compound in any distinct mineral; instead it is widely distributed in small amounts in other minerals, usually in concentrations averaging about 0.001 parts per million. Chile is the world leader in rhenium recovery, followed by the United States, Poland, Uzbekistan, and Kazakhstan.. Rhenium Get price

Rhenium

Rhenium (atomic number 75, symbol Re) is a metal with a silvery-white color, high density, and high melting point. Only platinum, osmium, and iridium have higher densities than rhenium. It is a transition metal that is solid at room temperature and has similar chemical properties to Get price

RHENIUM

Rhenium is a kind of very hard silvery-white metal, it looks like platinum. Rhenium is high melting point metal, only exceeded by tungsten. The chemical property of rhenium is stable and it has strong corrosion resistance. It is not oxidized in the air, acid but alkali has a little corrosion effect on it. Rhenium Get price

Effect of heat treatment on thermoelectric properties of

95% tungsten - 5% rhenium (W-5Re) and 74% tungsten - 26% rhenium (W-26Re) were sputtered as the positive film and negative film of TFTCs on the silicon carbide ceramic substrate. The hot junction, which determined the thermal load, was made by the superposition film of W-5Re film and W-26Re film. The cold junction is at the end of the negative Get price

Rhenium

Rhenium, a silver, lustrous metal, has one of the highest melting points of all elements, with only tungsten and platinum being higher. Trace amounts of the element rhenium were discovered spectro- scopically in platinum ores in the minerals columbite, gadolinite, molybdenite and in platinum Get price

Rhenium

Rhenium is used for catalysts, thermocouples, x-ray tubes targets, electrical contacts, filaments, and aerospace and in nuclear applications. Rhenium is also used to increase ductility in tungsten and molybdenum alloys. TYPICAL PROPERTIES: Mass: Atomic Weight: 186.2. Density: 21.02 Get price

Introduction of doped tungsten

For high discharge property and mechanical strength, rhenium tungsten is used as core parts for analytical device. Rhenium tungsten coil (filament for analytical device) Material information on other pages. Medical; Analytical device sensor; Nuclear Power X-Ray; 3. Platinum tungsten. Platinum tungsten wire. Overview. Platinum added tungsten. Get price

Rhenium

Rhenium is used for catalysts, thermocouples, x-ray tubes targets, electrical contacts, filaments, and aerospace and in nuclear applications. Rhenium is also used to increase ductility in tungsten and molybdenum alloys. TYPICAL PROPERTIES: Mass: Atomic Weight: 186.2. Density: 21.02 Get price

IYPT 2019 Elements 075: Rhenium: Superalloys and making

Oct 06, 2019This is because rhenium is one of the rarest elements in Earth's crust, and is consequently expensive to procure. Another major application of rhenium is in platinum-rhenium catalysts. A major use of these catalysts is in the process to make lead-free, high octane petrol. Other alloys that rhenium is used in contain tungsten and molybdenum. Get price

Tungsten

Bare Wire Platinum Thermocouples P10R, P13R, and P30R Series. Shown larger than actual size. High Temperature Ceramic Accessories ORX Series. Ceramic Connectors NOX Series. Extreme (High) Temperature Sensors and Accessories Platinum Thermocouples Type R, S, and B, Tungsten-Rhenium Type C and D. Title: Tungsten-Rhenium Fine Diameter Thermocouple Get price

Rhenium Data Sheet

Substitutes: Substitutes for rhenium in platinum-rhenium catalysts are being evaluated continually. Iridium and tin have achieved commercial success in one such application. Other metals being evaluated for catalytic use include gallium, germanium, indium, selenium, silicon, tungsten Get price

Rhenium

Rhenium was discovered by the German chemists Ida Tacke-Noddack, Walter Noddack and Otto Carl Berg in 1925. They detected rhenium spectroscopically in platinum ores and in the minerals columbite, gadolinite and molybdenite. In 1928, Noddack and Berg were able to extract 1 gram of rhenium Get price

Wuxi Guotao Tungsten Rhenium Co., Ltd

GT is the only national tungsten rhenium thermocouple training center and professional manufacturer designated by the Ministry of Metallurgy of China. Its tungsten rhenium quick thermocouple and anti-oxidation tungsten rhenium thermocouple can be used in the air for the replacement of platinum-rhodium thermocouple. Get price

Rhenium

Rhenium was discovered by the German chemists Ida Tacke-Noddack, Walter Noddack and Otto Carl Berg in 1925. They detected rhenium spectroscopically in platinum ores and in the minerals columbite ((Fe, Mn, Mg)(Nb, Ta) 2 O 6), gadolinite ((Ce, La, Nd, Y) 2 FeBe 2 Si 2 O 10) and molybdenite (MoS 2).Rhenium is present in these materials only in trace amounts. Get price

High Temperature Thermocouple

Tungsten 5% Rhenium (+) Vs. Tungsten 26% Rhenium (-) C: AE 4.4 C (0 - 426 C)* 0 - 2200 C 1% (426 - 2315 C)* Tungsten 3% Rhenium (+) Vs. Tungsten 25% Rhenium (-) D: AO 4.4 C (0 - 426 C)* 0 - 2200 C 1% (426 - 2315 C)* Platinum 13% Rhodium (+) Vs. Platinum: R R 1.5 C or 0.25% ** 0 - 1450 C: Platinum 10% Rhodium Get price

Interesting Facts About Rhenium

Rhenium also has the third-highest melting point of all the elements. Tungsten and carbon are the only two elements that have higher melting points than rhenium. Additionally, rhenium has the fourth-highest density of all elements. Rhenium is rarer than most other elements. There is only about 40 to 50 tons of rhenium Get price

Rhenium

Dec 19, 1995What is claimed is: 1. A dense refractory composition consisting of rhenium in an amount within a range of from 1 to 25 percent by weight of composition and a refractory metal carbide selected from tungsten carbide, hafnium carbide and titanium carbide in an amount within a range of from 75 to 99 percent by weight of composition, the amounts of rhenium and refractory metal carbide totaling Get price

Rhenium Statistics and Information

Rhenium (Re), the last naturally-occurring element to be discovered, was discovered in Germany in 1925. The process was so complicated and the cost so high that production was discontinued until early 1950 when tungsten-rhenium and molybdenum-rhenium alloys were prepared. These alloys found important applications in industry that resulted in a great demand for the rhenium Get price

Platinum vs. Gold, Silver, Tungsten, Titanium, and Palladium

Also, unlike platinum, tungsten cannot be engraved unless laser is used. Platinum vs. Titanium. Titanium and platinum look alike and are both safe to wear for people with allergies, but titanium is the more affordable option. Titanium is also a lot more durable than platinum and is very hard to bend or scratch. However, once scratched, platinum Get price

Oxidation of High Yield Strength Metals Tungsten and

The laser-heating diamond-anvil cell technique enables direct investigations of materials under high pressures and temperatures, usually confining the samples with high yield strength W and Re gaskets. This work presents experimental data that evidences the chemical reactivity between these refractory metals and CO2 or carbonates at temperatures above 1300 deg;Ϲ and pressures above 6 GPa. Get price