Rhenium Alloys: Tungsten-Rhenium alloys, wire, flat wire ...

Historically Tungsten 25% Rhenium alloy has been produced into wire for the thermocouple market, but recent demands for high temperature structural components have forced the development of novel processing techniques for Tungsten-Rhenium and Tungsten-Rhenium with hafnium carbide. The hafnium carbide addition is known to increase strength of refractory metals. The applications for these ...

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Tungsten Rhenium Alloys

Tungsten-rhenium alloy combinations can be used over a wide temperature range that extends from –320°F to over 5200°F. Standard temperature tables (ASTM E230) are available from 32°F to 4200°F. These alloy combinations are susceptible to rapid oxidation at high temperatures and are not recommended for use in oxidizing environments. They are very stable at high temperatures in

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Tungsten-Rhenium Wire Production Process

Tungsten-Rhenium Wire Production Process Preparation of raw materials - raw materials separation - mixing - reduction treatment - second mixing - Pressed Sintered - swaging, drawing processing - Finished 1 Raw material preparation: raw materials for the tungsten powder and ammonium perrhenate powder, tungsten powder particle size less than 4um, ammonium perrhenate size of less than 200um 2 ...

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Tungsten Rhenium Alloy-Edgetech Industries (A worldwide ...

The effect increases with the rhenium concentration and usually W Re alloys are produced up to 26% of Re. The cost of these materials is relatively lower compared to noble Pt and Rh. Specifications for tungsten rhenium wire. Product: Tungsten rhenium alloy wire: Material: W-3Re, W-25Re, W-5Re, W-26Re: Specification: ASTM E696: Density: 19.4g/cc to 19.7g/cc: Diameter: 0.1~1.0mm: Tungsten ...

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Rhenium Alloys: Pure Tungsten wire and rod

Tungsten Wire, a precision wire, with its very high tensile strength even at a very small diameter, and good electrical conductivity is widely used for thermocouples, electronic devices, and lighting. Our Rhenium Wire is 99.99% pure and has high strength and excellent ductility. Molybdenum-47.5%-Rhenium Wire is used in welding, electronics and ...

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US6597107B1 - Tungsten-rhenium filament and method for ...

A tungsten-rhenium filament is disclosed. The filament has a re-crystallization temperature above 2000° C., and it comprises an aluminum-potassium-silicon (AKS) additive. The potassium content of the filament is between 80-110 ppm, and the rhenium content is between 0.05-0.19% by weight. A method for manufacturing a rhenium-tungsten filament is also disclosed.

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EP1335410B1 - Tungsten-rhenium filament and method for ...

tungsten rhenium crystallization Prior art date 2002-01-11 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number EP20030250125 Other languages German (de) French (fr) Other versions EP1335410A3 (en

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Rhenium: The Expensive Metal With An Important Use ...

11/01/2018  Rhenium is named for the Rhine River (Rhenus being Latin for Rhine) and is one of the rarest elements in the Earth with an estimated 1 part per billion. Of all the elements, rhenium element has the third highest melting point (behind only tungsten and carbon) as well as the fourth most dense (behind platinum, iridium and osmium).

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Concept Alloys, Inc.

Tungsten-rhenium alloy combinations can be used over a wide temperature range that extends from –196°C to over 2,760°C. Standard temperature tables (ASTM E230 and E1751) are available from 0°C to 2315°C. These alloy combinations are susceptible to rapid oxidation at high temperatures and are not recommended for use in oxidizing environments. They are very stable at high temperatures in ...

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Tungsten Rhenium Alloy-Edgetech Industries (A worldwide ...

The effect increases with the rhenium concentration and usually W Re alloys are produced up to 26% of Re. The cost of these materials is relatively lower compared to noble Pt and Rh. Specifications for tungsten rhenium wire. Product: Tungsten rhenium alloy wire: Material: W-3Re, W-25Re, W-5Re, W-26Re: Specification: ASTM E696: Density: 19.4g/cc to 19.7g/cc: Diameter: 0.1~1.0mm: Tungsten ...

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Tungsten-rhenium filament and method for producing same ...

A tungsten-rhenium filament for an operating temperature between 2900 and 3200° K, the filament comprising an aluminum-potassium-silicon (AKS) additive, and having a grain microstructure comprising substantially exclusively elongated interlocking grains with a Grain Aspect Ratio (GAR) not less than 12 and having a rhenium content of 0.2-0.4% by weight. 2. The filament of claim 1 in which the ...

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The properties and applications of rhenium produced by CVD ...

01/07/1991  This paper reports on the properties and applications of rhenium produced by CVD. Rhenium possesses a unique combination of properties that make it an excellent choice for many applications demanding high-temperature strength, wear resistance and erosion resistance. While the major use of rhenium is ...

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The Refractory Noble Metals and Rhenium Johnson Matthey ...

The effects of rhenium additions in improving the ductility of molybdenum and tungsten are ascribed to three factors. First, the rhenium is said to form with oxygen a complex molybdenum-rhenium oxide which does not, like MoO 2, give rise to a eutectic that wets the grain boundaries but tends to be redistributed within the alloy grains.Secondly, the rhenium promotes twinning at room temperature ...

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Tungsten-Rhenium (WRe) at Rs 45000/kilogram Tungsten ...

Historically Tungsten 25% Rhenium alloy has been produced into wire for the thermocouple market, but recent demands for high temperature structural components have forced the development of novel processing techniques for Tungsten-Rhenium and Tungsten-Rhenium with hafnium carbide. The hafnium carbide addition is known to increase strength of refractory metals. Interested in this product?

Get Price

Tungsten Rhenium Alloys

Tungsten-rhenium alloy combinations can be used over a wide temperature range that extends from –320°F to over 5200°F. Standard temperature tables (ASTM E230) are available from 32°F to 4200°F. These alloy combinations are susceptible to rapid oxidation at high temperatures and are not recommended for use in oxidizing environments. They are very stable at high temperatures in

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Stability and mobility of rhenium and osmium in tungsten ...

23/05/2019  rhenium and tungsten-osmium alloys. Keywords: radiation induced precipitation, tungsten, first principles (Some figures may appear in colour only in the online journal) 1. Introduction Due to its high melting point and good resistance to irradiation by neutrons, tungsten (W) is a promising candidate material for high-temperature and heavy irradiation applications, e.g. for ...

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tungsten rhenium produced - lampstudio.pl

Tungsten (W) Despite its assets, raw tungsten contains impurities that make it extremely brittle and difficult to machine; producing ultra-high purity tungsten increases its malleability and ductility while retaining its thermal stability, as does alloying it with other metals such as rhenium Commercially, tungsten is typically produced in the form of.

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US3236699A - Tungsten-rhenium alloys - Google Patents

tungsten rhenium alloy sag wire Prior art date 1963-05-09 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US285173A Inventor John W Pugh Lutfi H Amra Dallas T Hurd Current Assignee (The listed assignees may be ...

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Rhenium - Properties - Price - Applications - Production

Due to increases in rhenium recycling and a drop in demand for rhenium in catalysts, the price of rhenium has dropped to US$2,844 per kilogram (US$1,290 per pound) as of July 2018. Approximately all principal rhenium production (rhenium produced by mining rather than through recycling) is as a by-product of copper mining. Total world production is between 40 and 50 tons/year; the main ...

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Tungsten rhenium needle_Rheniumet Ltd.

Tungsten rhenium needle-Rheniumet Ltd. -Our company has patented materials such as tungsten rhenium, tungsten rhenium copper, etc., using high-purity tungsten, rhenium and other raw materials, and a special production process to ensure that the tungsten rhenium alloy has high uniformity and density. The probes produced are in conductivity, The elastic modulus, durability, mechanical

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Refractory Metals: Niobium, Molybdenum and Rhenium

The refractory metals include niobium (also known as columbium), tantalum, molybdenum, tungsten, and rhenium. With the exception of two of the platinum-group metals, osmium and iridium, they have the highest melting temperatures and lowest vapor pressures of all metals. The refractory metals are readily degraded by oxidizing environments at moderately low temperatures, a property that ...

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(PDF) Iridium coated rhenium rocket chambers produced by ...

controlled with a tungsten-rhenium . thermocouple, infrared radiometer and optical . pyrometer. The load-extension curve fo r 1600, 1900 and 2200 ° C was obtained. Ultimate . strength was ...

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X-ray tube - Wikipedia

The quantity of heat produced (in Joule) in the focal spot is given by : = ... The rhenium makes the tungsten more ductile and resistant to wear from the impact of the electron beams. The molybdenum conducts heat from the target. The graphite provides thermal storage for the anode, and minimizes the rotating mass of the anode. Microfocus X-ray tube. Some X-ray examinations (such as, e.g., non ...

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The properties and applications of rhenium produced by CVD ...

01/07/1991  OSTI.GOV Journal Article: The properties and applications of rhenium produced by CVD Title: The properties and applications of rhenium produced by CVD Full Record

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