Measurement Units °C. Measurement Type High Temperature Gas Measurement. Tungsten-Rhenium thermocouples were developed to meet the requirements for measuring ultra-high temperatures in the 2760°C (5000°F) range. OMEGA makes available three widely used Tungsten-Rhenium thermocouple calibrations. Tungsten versus Tungsten-26% Rhenium, Tungsten ...
Despite the fact that many tested tungsten-rhenium alloys had been worked, reports do show that tungsten-rhenium is more ductile than tungsten with or without thermomechanical processing. As an example, Mutoh et al. [51] compared the fracture toughness of tungsten samples with 0, 5, and 10 wt% rhenium.
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 ...
The influence of rhenium alloying on surface morphology and deuterium retention in tungsten irradiated to deuterium plasma are investigated, the underlying reasons are analyzed in detail. • Surface blistering in W-Re alloy was greatly suppressed as the samples were exposed to deuterium plasma with a dose of 5.2 × 10 25 D/m 2 at 506 K.
Rhenium Alloys is a leading supplier and researcher of rhenium, molybdenum, tungsten, and their alloys (molybdenum-rhenium, tungsten-rhenium, tungsten-copper). Located and made in the USA. Learn more about Rhenium Alloys Request Quote Careers – Download Application TF: 888-RHENIUM PH: 440-365-7388 FX: 888-366-9830 ...
An alloy containing tungsten and rhenium is also used because the addition of 5-10% rhenium prevents grazing of the anode surface. The body of the anode is made of materials that are light and have a good heat storage capacity, like molybdenum and graphite.
It is usually extracted from the flue dusts of molybdenum smelters. The name Rhenium originates from the Latin word 'Rhenus' meaning "Rhine" after the place of discovery. 74 W 183.840000000 Tungsten. See more Tungsten products. Tungsten (atomic symbol: W, atomic number: 74) is a Block D, Group 6, Period 6 element with an atomic weight of 183.84.
Here we look at two of the tungsten thermocouples, Type C and Type D. These have been developed to facilitate ultra-high temperature measurement in vacuum, reducing or inert atmospheres. These thermocouple wires are both Tungsten Rhenium alloys. Type C is Tungsten 5% Rhenium vs Tungsten 26% Rhenium. Type D has a slightly different composition ...
Tungsten rhenium alloys have a high melting point of 3050 °C and a high temperature of recrystallization of 1900 °C which makes it used in aerospace and temperature measuring applications. The addition of rhenium can increase the ductility after the wire recrystallizes. The specific resistance, as well as vibration strength, have been further ...
These products are 3% Rhenium Tungsten, 5% Rhenium Tungsten and 25% Rhenium Tungsten. The addition of rhenium to the tungsten increases the ductility and shock resistance at higher temperatures encountered in thermocouple and electronic applications among others. Surface Finishes.
1.1 This specification covers the requirements for bare, solid conductor, tungsten and rhenium alloy thermoelements having diameters of 0.127 mm (0.005 in.) to 0.508 mm (0.020 in.) supplied in matched pairs. These thermoelements shall be suitable for use either in bead-insulated, bare-wire thermocouples, or in compacted metal-sheathed, ceramic insulated thermocouple material or assemblies.
Rhenium improved the strength and ductility of tungsten in the 20–3000°C range. 4. W-Re wire developed a high strength and ductility after annealing at 1400–1950°C. An alloy with 20% Re annealed at 1400–1500°C had a strength of 180–190 kg/sq. mm and 18–20% elongation. 5. W-Re alloys were harder than plain W in the 20–1000°C range.
PHASE diagram equilibrium studies in the binary tungsten–rhenium system show the presence of two phases over the range 0–65 wt. per cent rhenium at 1,500° C (ref. 1). A terminal solid ...
Huntsville, AL based Quadrus Corporation recently used 6K Additive's expert services for making spherical tungsten-rhenium they subsequently used to produce a non-eroding throat insert for a solid ...
Rhenium has one of the highest melting points of all elements, exceeded only by tungsten and carbon. It is also one of the most dense, exceeded only by platinum, iridium, and osmium. ... close-packed crystal structure. It has the electronic structure [Xe]4f 14 5d 5 6s 2. Natural rhenium is a mixture of one stable and one radioactive isotope of ...
Tungsten Rhenium thermocouples 186. 2 Re 7 5 183.9 W 74. Typical Tungsten Rhenium thermocouple assemblies Ordering information: Specify model number, length measurements (L), calibration code and termination options. Termination codes: CODE 1 Bare Wire 3/4" stripped leads. CODE 2assemblies. From annealing applications, to sintering, to heat ...
The electrical resistivity of solid-state tungsten (W) and rhenium (Re) was experimentally measured at high pressures up to 5 GPa and temperatures up to ∼2273 K using a four-wire resistivity method.
Tungsten is a strong, wear-resistant metal that is used make probe pins (contact pins) for inspecting high-density integrated circuits in parts such as semiconductors and liquid crystal panels. Toshiba Materials has developed Rheni-tung, an alloy in which rhenium is added to tungsten to further improve its properties.
Definition. Most definitions of the term 'refractory metals' list the extraordinarily high melting point as a key requirement for inclusion. By one definition, a melting point above 4,000 °F (2,200 °C) is necessary to qualify. The five elements niobium, molybdenum, tantalum, tungsten and rhenium are included in all definitions, while the wider definition, including all elements with a ...
About 3% Rhenium/97% Tungsten Wire The development of 3% rhenium/97% tungsten wire is a result of a continuous research effort that has been conducted since the early 1900's. One of the first accomplishments of this research was a non-sag grade of tungsten wire, which used grain growth controlling additives to modify the recrystallized structure. The tungsten-rhenium […]
Tungsten Rhenium (WRe3) Plate - AEM Metal. WRe5/26 Thermocouple Video - AEM Metal. W-Re alloys are made from Tungsten alloy with 3%, 5%, 25%, or 26% Rhenium, which becomes more ductile and machinable. With good electrical properties, W-Re alloys are widely used as high-temperature thermocouple materials.
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 ...
Rhenium. More than 80% of the global rhenium usage is in high-temperature superalloys for aircraft applications like turbine blades and engine parts. These alloys contain up to 6% rhenium, making jet engine construction the largest single use for the element. Rhenium is added to nickel-based super alloys to improve creep strength of the alloys.
Heating elements made of rhenium-based alloys last 5-10 times longer than those made of tungsten or molybdenum. The working life of the Re8-12-Ni-Cr alloy heating element at high temperatures is 9 times longer than that of the Ni-Cr alloy heating element and has the advantage of working normally under high temperature and pressure.
Oxidation kinetics of pure tungsten (W) and tungsten-rhenium (W-Re) alloys with Re contents of 1%, 5% and 15% has been examined in the oxygen gas atmosphere at 873 K. The oxidation kinetics of the W-Re alloys were well characterized by a parabolic rate law.