(PDF) Effect of Rhenium addition on tungsten heavy alloys …
Abstract and Figures. In this study, Rhenium is added to traditional (W-Ni-Fe) Tungsten heavy alloys keeping the ratio of Ni:Fe as 7:3 constant and varying the proportions of W and Re. The alloys ...
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Machining Guide Molybdenum Moly Alloys
The following grinding procedures are suggested as starting points; necessary changes, if any, will be evident from the results obtained in preliminary work. Operation Surface Surface Cylindrical Cylindrical type of grind dry wet wet or dry wet wheel speed (surface fpm) 6000 6000 6500 6500 infeed (in./pass) 0.002 0.005 0.001 0.0005
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Rhenium(Re) | MetalsTek Engineering
MetalsTek Engineering is a leading supplier of Rhenium products. We offer competitive pricing and excellent lead times on all our materials, and we can supply custom materials per any specs/drawings you provide us. Evaporation Materials Sputtering Targets Rhenium Crucibles Rhenium Wire Rhenium Rod Rhenium Sheet & Foil & Strip Rhenium Plate & …
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Electrochemical Processing of Metal Wastes of Rhenium
The wastes of rhenium-containing heat-resistant nickel alloys (HRNA) contain 50-75% of Ni, 3-15% of Co. While electrochemical processing of the wastes of the HRNA up to 80-90% of Re, Ni and Co ...
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About Rhenium Alloys
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 …
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Nickel-rhenium compound sheds light on the potency of rhenium …
For many decades, it has been known that rhenium imparts a tremendous resistance to creep to the nickel-based high-temperature alloys colloquially known as superalloys. This effect is so pronounced that is has been dubbed ``the rhenium effect.'' Its origins are ill-understood, even though it is so critical to the performance of these high …
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Industrial Services
Rhenium Alloys has the expertise and equipment to handle many industrial metal services, including Cold Isostatic Pressing, Heat-Treating (Annealing and Sintering), Swaging, Drawing, Testing Mechanical Properties, Straightening and Flattening, Center-less Grinding, Rolling, and Engraving. See more
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Oxidative leaching of rhenium from grinding waste of rhenium …
The rhenium leaching process was conducted in two variations: in the first option, grinding waste was mixed with a hydrochloric acid solution at ~100 °C, followed by the addition of hydrogen ...
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Study on the influence of rhenium and grain …
To study the impact of rhenium and grain boundaries on the grinding surface quality of Ni-based superalloys, the experiments were conducted with Ni-based polycrystalline …
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Kinetics of sulfuric acid leaching of nickel from grinding …
In addition to nickel, grinding waste contains other metals such as rhenium, chromium, cobalt, tungsten, tantalum, molybdenum, hafnium, titanium, and aluminum. The process of nickel leaching from waste with a sulfuric acid solution was carried out in a thermostated cell at an elevated temperature (55–85 °С), waste : 3 M H2SO4 solution …
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Kinetics of Sulfuric-Acid Nickel Leaching from the …
for the acid opening of grinding wastes: (i) transferring an alloy base into a solution with the concentration of rhenium in the residue, followed by processing with the use of a high-temperature oxida-tive distillation of rhenium heptaoxide; (ii) oxidative dissolution with transferring both alloy base and rhenium into solution, followed by a
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Superplasticity in tungsten-rhenium alloys
high elongations at 3630° F (2000° C) for tungsten alloys containing 20- to 30-atomic percent rhenium is reflected in the tensile strengths, which exhibit a distinct minimum in the vicinity of 28-atomic-percent rhenium (fig. 3). To determine the effects of annealing temperature on the tensile properties, speci mens were annealed at 3090° F ...
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Fabrication of rhenium nanowires by selective etching of eutectic alloys
Digestion of the NiAl-Re eutectic in sulphuric acid, on the other hand, produced mainly long rhenium fibres of consistent shape and length. Both etching procedures might subsequently be applied for the preparation of nanodisc electrode arrays by embedding the obtained Re nanowires into a polymer and grinding until the wires are …
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General Guide to Machining Tungsten Alloys | Ed Fagan
Drilling: Use carbide tipped or solid carbide drills with air or coolant such as molydisulfide cutting fluid. Drill tap holes to 50-55% of thread hole requirement. Tapping: Use straight flute, high alloy taps. For small threaded holes, thread forming. taps can be used. Nitrided or solid carbide taps will extend life of tap on long run jobs.
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(PDF) Extractive Metallurgy of Rhenium: A Review
The rhenium leaching process was conducted in two variations: in the first option, grinding waste was mixed with a hydrochloric acid solution at ~100 °C, followed by the addition of hydrogen ...
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Rhenium Alloys: Molybdenum-Rhenium alloys, …
Rhenium Alloys offers Rhenium and Molybdenum-Rhenium in plate, sheet, foil and ribbon. For over 45 years, Rhenium Alloys has been delivering high performance refractory metals to customers who desire …
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Rhenium Alloy
Specimen Preparation (Class 2 Procedures) Refractory metals such as Rhenium, Niobium, Tungsten and Molybdenum are a very soft, and any loose or fracture abrasive particles can easily embed. This makes specimen preparation very difficult because it gums up diamond grinding disks or becomes embedded with fractured SiC particles when ground with ...
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Multi-scale modeling reveals microstructural and mechanical …
This study delves into the grinding-induced microstructural and mechanical evolution in high-entropy nickel-based superalloys GH4169 and DD5, underscoring their distinct behaviors under varying machining conditions. Leveraging "Random Substitution" in Material Studio, the research developed intricate atomic models to accurately depict the …
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Preliminary Study of the Rhenium Addition on the Structure …
Rhenium promotes the grinding of tungsten grains. With 1.5 wt.%, changes in the microstructure are visible; there is a marked reduction in the size of the tungsten grains. With the increase in the rhenium content in the alloy, the size distribution of the measured grains decreases.
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Research on high-temperature mechanical …
1. Introduction. Rhenium (Re) has a melting point of 3180 °C, a density of 21.02 g/cm 3, and a linear thermal expansion coefficient of 6.63 × 10 −6 m/K. Re has …
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Rhenium
Rhenium is one of the densest materials and has one of the highest melting points of all materials. It is produced as a by-product of copper smelting and has many useful properties. ... electron discharge machining and abrasive cutting and grinding techniques. Properties. ... Rhenium tungsten alloys are used for high temperature …
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Selective Laser Melting of Tungsten-Rhenium Alloys
Additively manufactured tungsten-rhenium alloys have been compared with pure tungsten in terms of their volumetric density, cracking behavior, microstructure, and hardness. The compositions W-5 wt.%Re and W-25 wt.%Re were explored. Increasing the rhenium content led to an increasing percentage of the theoretical density, with a …
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Processing of Grinding Waste of Rhenium-Containing Alloys …
The following main techno-economic performance values have been achieved when processing grinding residues (balance-based tests were conducted with a lot of SP-2 alloy waste) to produce ammonium rhenate of high purity, as well as tantalum-niobium, nickel-cobalt and tungsten-molybdenum concentrates: rhenium recovery of 92.3% into a …
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Metallurgy Industry Applications
We have a metallurgy alloy supplier since 1982, providing our customers with the custom specs they need to for their business. Check out all the different options we provide. Eagle Alloys has built our reputation by providing the best customer service in the industry. For nearly four decades, we have provided many industries with the highest ...
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A Guide To Machining Molybdenum Metal and Alloys
EDM & ECM. Both of these processes work well when working with molybdenum. Stock removal Rates of up to .5 in (3)/min and +/- .0005" tolerances have been achieved with EDM. EDM wire cutting is used for intricate shapes. Electrochemical machining is normally capable of approximately 1 in (3) /min stock removal at 10,000 amps.
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Mechanical properties and microscopic analysis of sintered rhenium
The physical and basic mechanical properties of rhenium, the types of manufacturing processes, and the applications of rhenium and its alloys have been discussed in previous research [4, 13, 15]. ... both with 80 μm–1 μm gradation using a FORCIPOL 202 metallographic grinding and polishing machine.
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3d Powder Refractory Metal Spherical Powders
REQUEST A QUOTE. Discover SAM's collection of spherical alloy metal powders designed for 3D . Our range includes spherical powders of tungsten, molybdenum, tantalum, rhenium, nickel, titanium, cobalt, high entropy alloy, and stainless steel. Elevate your 3D projects with our premium metal powders.
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Rhenium Alloys: Halogen Lamps and Infrared (IR) Lamp …
Rhenium Alloys manufactures tubular double-ended (T-Style) infrared (IR) Quartz Halogen Lamps. Our primary IR Halogen Lamps are used in the semiconductor industry as a heat source in epitaxial processing of silicon wafers. Our lamps are qualified and approved by leading semiconductor manufacturers worldwide. Rhenium Alloys is the OEM supplier ...
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PROPERTIES OF DILUTE TUNGSTEN-RHENIUM ALLOYS
rhenium alloy were included for comparison with the dilute alloys. Alloys were single. 20 30 40 50 60 70 80 Rhenium, weightpercent Figure 1. -Tungsten-rheniumphasediagram(ref. 7). ... (grinding of defects) and salt-bath cleaning during fabrication was varied. Bend Testing Bend test specimens measuring 0.3 by 0.9 inch were cut from the rolled ...
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Strain Hardening of Rhenium and Two Typical Molybdenum-Rhenium Alloys …
Molybdenum-rhenium alloys containing 40 to 48% Re by weight are commonly used for many high-technology applications. Higher rhenium contents bring the alloys into a two-phase region with the ...
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