method for manufacturing rhenium

Method of manufacturing a rare earth oxysulfide ceramic ...

6/21/1988· A method of manufacturing rare earth oxysulfide ceramics, wherein at least one rare earth oxysulfide ceramic material pretreated by a cold press is covered with a foil of a metal selected from the group consisting of molybdenum, tungsten, platinum, and rhenium, sealed into an airtight vessel of tantalum or niobium, and then subjected to a hot ...

More

Rhenium Material Properties - NASA

materials indicated that the rhenium manufacturing process, material composition and prior handling strongly dictated its properties. In addition to tensile properties, CVD, pressed and sintered material and HIP rhenium successfully completed 100 cycles of low cycle fatigue. Creep data were also obtained showing that CVD and pressed and ...

More

ADVANCED POWDER METALLURGICAL TECHNIQUES FOR …

Each method proposed will be useful in the cost reduction and manufacturing schedule reduction that is required for the SM-3 divert system, other DoD missile systems, and commercialcustomers.Rhenium Alloys, Inc. was founded in 1966 to develop powder metallurgical applications for rhenium.

More

Rhenium (Re) | AMERICAN ELEMENTS

Rhenium Properties. Rhenium is a Block D, Group 7, Period 6 element. The number of electrons in each of rhenium's shells is 2, 8, 18, 32, 13, 2 and its electron configuration is [Xe] 4f 14 5d 5 6s 2. The rhenium atom has a radius of 137.1.pm and its Van der Waals radius is 200.pm.

More

Rhenium Alloys: White papers and technical literature

The developments in near-net shape powder metallurgy rhenium combustion chambers will reduce manufacturing cost of the rhenium chambers by 25%, and reduce the manufacturing time by 30-40%. The quantity of rhenium metal powder used to produce a rhenium chamber is reduced by approximately 70% and the subsequent reduction in machining schedule and ...

More

(PDF) Extractive Metallurgy of Rhenium: A Review

Thus, the method and route for the extraction of primary rhenium is dependent on other metals (copper, molybdenum and uranium) of which rhenium is a by-product.

More

Near-Net Shape Powder Metallurgy Rhenium Thruster

alternate method of manufacturing rhenium thrusters by powder metallurgy method. The literature and several publications, references 1-3, indicate that powder metallurgy rhenium has excellent mechanical properties and a uniform and reproducible microstructure. The characteristics of powder metallurgy rhenium make it a more consistent product

More

US20100277051A1 - Emission filaments made from a …

A new Rhenium alloy usable for improving the performance of emission filaments used in mass spectrometers or other similar scientific instruments, which is made by adding low level concentrations of Yttrium Oxide to Rhenium of less than 10%. This new alloy has demonstrated superior performance characteristics compared to pure Rhenium for this purpose.

More

Experimental and theoretical study of rhenium ...

Experimental and theoretical study of rhenium radioisotopes production for manufacturing of new compositional radiopharmaceuticals. Pourhabib Z(1), Ranjbar H(2), Bahrami Samani A(3), Shokri AA(1). Author information: (1)Department of Physics, Payame …

More

Rhenium | Re - PubChem

Rhenium atom is a manganese group element atom. Its usual commercial form is a powder, but this element can be consolidated by pressing and sintering in a vacuum or hydrogen atmosphere. This procedure yields a compact solid having a density above 90% of the density of the metal. When annealed this metal is very ductile and can be bent, coiled ...

More

US Patent for Method for manufacturing adipic acid …

A method for preparing bio adipic acid includes steps of (a) preparing a glucaric acid potassium salt by mixing and reacting glucose, nitric acid (HNO3), sodium nitrite (NaNO2) and potassium hydroxide (KOH), (b) preparing glucamide from the glucaric acid potassium salt prepared in the step (a), (c) preparing 2,4-hexadiene diamide by performing a deoxydehydration reaction on the glucamide ...

More

Rhenium-Production,Technology,Properties, Applications ...

Method for manufacturing rhenium-containing alloy powder Process for making rhenium-containing alloys Recovery of platinum group metals and rhenium from materials using halogen reagents

More

METHOD FOR MANUFACTURING SEMICONDUCTOR …

6/14/2018· A method for manufacturing a semiconductor device, the method comprising: forming a mask layer including a) one metal from tungsten, tantalum, zirconium, hafnium, molybdenum, niobium, ruthenium, osmium, rhenium, and iridium, b) boron, and c) carbon on a layer to be etched; patterning the mask layer; and forming a hole or a groove in the layer ...

More

US 7736414 B1 - Rhenium Nanoparticles - Lens

Rhenium nanoparticle mixtures and methods for making the same are provided. The rhenium nanoparticle mixture can be painted onto a surface to be coated and dried at low temperatures to form a gas-tight elemental rhenium coating. Moreover, the rhenium nanoparticle mixture can be used to join rhenium components and temperatures far lower than traditional welding techniques would require. …

More

US Patent Application for METHOD FOR …

A method for manufacturing an olefin through reaction between the same type of or different types of raw material olefins to obtain an olefin having a structure different from the structure of the raw material olefins, the method including using a catalyst containing at least one type of metal element selected from the group consisting of tungsten, molybdenum, and rhenium together with other ...

More

Global Rhenium Metal Market Analysis and Forecast to …

10/3/2019· Rhenium is a chemical element with symbol Re and atomic number 75. It is a silvery-gray, heavy, third-row transition metal in group 7 of the periodic table.

More

Rhenium Redefined - NASA Spinoff

Not only was the new method good for creating rocket thrusters, but also for other commercial purposes. For instance, Rhenium Alloys, Inc., used its innovative process to manufacture a rhenium hemisphere for a commercial customer, and can also create other custom parts as needed.

More

Experimental and theoretical study of rhenium ...

In this study, rhenium-186 and rhenium-188 and impurities production with natural rhenium irradiation were investigated by the theoretical and practical methods. The analysis of the results of the theoretical and experimental methods shows their good agreement and this matter demonstrates the usefulness and suitability of theoretical method.

More

Rapid manufacturing of rhenium components using …

4/1/2005· – The purpose of this paper is to provide insights for understanding the relationship between rapid manufacturing process for rhenium components in jet nozzle fabrication using electron beam‐physical vapor deposition (EB‐PVD). Specifically, to develop a methodology to characterize and improve this new process through motion planning for maintaining uniformity in the deposition …

More

---Rheniumet Ltd

Application: Used as an additive for manufacturing superalloys. Specification: 4N Grade Re≥99.99%(calculated by subtractive method,except gas element) 5N Grade Re≥99.999%(calculated by subtractive method,except gas element) Medium density rhenium pellet/ingot, density is about 12/cc High density rhenium pellet/ingot, density is about 18.5g/cc

More

"A METHOD OF MANUFACTURING ETHYLENE OXIDE" - …

"A METHOD OF MANUFACTURING ETHYLENE OXIDE" Abstract: A method of manufacturing ethylene oxide by contacting an epoxidation reactor feed that can comprise ethylene, oxygen, and a concentration of carbon dioxide with a high selectivity epoxidation catalyst. ... and a promoting amount of rhenium. 9. A method as claimed in claim 8, wherein the ...

More

Rapid manufacturing of rhenium components using EB …

Request PDF | Rapid manufacturing of rhenium components using EB-PVD | Purpose – The purpose of this paper is to provide insights for understanding the relationship between rapid manufacturing ...

More

Graphene production techniques - Wikipedia

A rapidly increasing list of graphene production techniques have been developed to enable graphene's use in commercial applications .. Isolated 2D crystals cannot be grown via chemical synthesis beyond small sizes even in principle, because the rapid growth of phonon density with increasing lateral size forces 2D crystallites to bend into the third dimension.

More

Materials and Manufacturing Processes - Taylor & Francis

(1998). Development of a Near Net Shape Processing Method for Rhenium Using Directed Light Fabrication. Materials and Manufacturing Processes: Vol. 13, No. 5, pp. 719-730.

More

Wuxi Guotao Tungsten Rhenium Co.,Ltd

GT has more than 35 years of experience in manufacturing tungsten rhenium thermocouple wire.Its development can be traced back to the early 1980s when Mr Liu Tao who was our chief engineer as well as a senior engineer who enjoys the special allowance of the state.He invented the new technology of a complete liquid mixing method to produce high ...

More

Rhenium and rhenium alloys and manufacturing …

Rhenium is a rare and refractory metals, high melting point, high strength and good ductility and excellent mechanical stability, its melting point after tungsten, up to 3180 ℃, rhenium no critical brittle transition temperature, high temperature and thermal shock conditions are very good creep resistance, thermal shock suitable for ultra-high temperature and intense work environment, their ...

More

US8188318B2 - Method of manufacturing ethyleneamines ...

The present invention provides methods of manufacturing ethyleneamines that makes use of an ethyleneamine-generating process that is coupled to a transamination process. The combination of an ethyleneamine-generating process with a transamination process improves the mix flexibility that can be obtained from the single process allowing the production of ethyleneamine compositions having an ...

More

RHENIUM TUNGSTEN WIRE, METHOD OF …

The present invention provides a rhenium tungsten wire comprising 10 to 30 mass % of rhenium and balance of tungsten, and having a wire diameter D of 0.10-0.40 mm, wherein a tensile strength T (N/mm2) of the rhenium tungsten wire exists within a range specified by an equation (1). 6314.6D2-7869.3D+4516.3!<=T!<=5047.4D27206.4D+5129.2 (1). In a case where the medical needle is …

More

Experimental and theoretical study of rhenium ...

Rhenium therapeutic radioisotopes, namely rhenium-186 and 188, are radionuclides that have been used in combination with various ligands to provide different radiopharmaceuticals for the treatment of different diseases for many years. Each of these radioisotopes has its own special attributes, which make it appropriate to destroy special-sized tumors.

More