Abstract: A nickel and chromium alloy having a combined wt. % of nickel and chromium of at least 97 wt. %, wherein the chromium accounts for 33 to 50 wt. % of the alloy. The alloy may be provided in strip form and has adequate ductility for the manufacture of various products, such as sheaths for flux cored welding electrodes. A method of making the alloy strip includes forming a powder charge that is 97 to 100 wt. % of nickel and chromium combined and the chromium accounts for 33 to 50 wt. % of the charge, roll compacting the powder charge to form a green strip, sintering the green strip to form a sintered strip, and cold rolling and annealing the sintered strip to form the alloy strip.

Abstract: A nickel and chromium alloy having a combined wt. % of nickel and chromium of at least 97 wt. %, wherein the chromium accounts for 33 to 50 wt. % of the alloy. The alloy may be provided in strip form and has adequate ductility for the manufacture of various products, such as sheaths for flux cored welding electrodes. A method of making the alloy strip includes forming a powder charge that is 97 to 100 wt. % of nickel and chromium combined and the chromium accounts for 33 to 50 wt. % of the charge, roll compacting the powder charge to form a green strip, sintering the green strip to form a sintered strip, and cold rolling and annealing the sintered strip to form the alloy strip.

Abstract: A nickel and chromium alloy having a combined wt. % of nickel and chromium of at least 97 wt. %, wherein the chromium accounts for 33 to 50 wt. % of the alloy. The alloy may be provided in strip form and has adequate ductility for the manufacture of various products, such as sheaths for flux cored welding electrodes. A method of making the alloy strip includes forming a powder charge that is 97 to 100 wt. % of nickel and chromium combined and the chromium accounts for 33 to 50 wt. % of the charge, roll compacting the powder charge to form a green strip, sintering the green strip to form a sintered strip, and cold rolling and annealing the sintered strip to form the alloy strip.

Abstract: A method of making a molybdenum or molybdenum alloy metal strip is disclosed. The method includes roll compacting a molybdenum-based powder into a green strip. The method also includes sintering the green strip followed by a combination of warm rolling, annealing, and cold rolling steps to form the final metal strip which may be cut-to-length. The strip at the final thickness may also undergo an optional stress relief step.

Abstract: A method of making a molybdenum or molybdenum alloy metal strip is disclosed. The method includes roll compacting a molybdenum-based powder into a green strip. The method also includes sintering the green strip followed by a combination of warm rolling, annealing, and cold rolling steps to form the final metal strip which may be cut-to-length. The strip at the final thickness may also undergo an optional stress relief step.

Abstract: A sheet of titanium alloy that is less than 0.015? thick has adequate plasticity for subsequent forming into at least a part of a medical device that is MR-Conditional. A method for making the titanium alloy sheet includes cold rolling a titanium alloy to form a sheet having an average thickness less than or equal to 0.015?, cutting the sheet to length, and vacuum annealing the sheet in a final step, wherein the sheet following vacuum annealing has adequate plasticity for subsequent forming into at least a part of a medical device that is MR-Conditional. Neither grinding nor chemical etching is used to reduce the thickness of the titanium alloy when processing the sheet.

Abstract: A W—Cu—Ni alloy having thermophysical properties suitable for use in electrical contacts and electrodes is described. The alloy is formed by direct sintering of a powder blend comprising a tungsten-copper composite powder and a nickel powder. The tungsten-copper composite powder component of the blend comprises individual dual phase particles having a copper phase and a tungsten phase wherein the tungsten phase substantially encapsulates the copper phase. The method for direct sintering the W—Cu—Ni alloy substantially eliminates the formation of brittle intermetallics and slumping during sintering.

Abstract: A high performance W--Cu composite powder which is composed of individual particles having a tungsten phase and a copper phase wherein the tungsten phase substantially encapsulates the copper phase. The tungsten-coated copper composite powder may be pressed and sintered into W--Cu pseudoalloy articles having a homogeneous distribution of W and Cu phases without experiencing copper bleedout or it may be used in ceramic metallization for the electronics industry.

Abstract: A method of making flowable tungsten/copper composite powder by milling an aqueous slurry of a mixture of the desired weight ratio of tungsten powder and copper oxide powder and, optionally, a small amount of cobalt powder, spray-drying the slurry to form spherical, flowable agglomerates, and reducing the agglomerates in a hydrogen atmosphere.

Abstract: A method of making flowable tungsten/copper composite powder by milling an aqueous slurry of a mixture of the desired weight ratio of tungsten powder and copper oxide powder and, optionally, a small amount of cobalt powder, spray-drying the slurry to form spherical, flowable agglomerates, and reducing the agglomerates in a hydrogen atmosphere.

Abstract: A process for producing fine powder, which includes entraining a starting powder material in a carrier gas, injecting the starting powder material using the carrier gas into a high temperature jet to form a high velocity stream of molten droplets, fragmenting the resulting high velocity molten droplets by impacting against a substrate wherein the temperature of the substrate is above the melting point of the powder material, to form smaller droplets, and allowing the resulting fragmented smaller droplets to spheroidize and solidify in flight.

Abstract: Composite powder particles which are essentially spherical in shape are disclosed which consist essentially of particles of a matrix phase which consists essentially of a metal selected from the group consisting of aluminum and aluminum based alloys and a reinforcement phase which is relatively uniformly dispersed in and bonded to the matrix, the reinforcement phase comprising titanium diboride.A process is disclosed for producing the above composite particles which involves entraining in a carrier gas a plurality of agglomerated powders, at least one of the powders supplying aluminum, at least one of the powders supplying titanium without boron and at least one of the powders supplying boron without titanium. The powders are fed through a high temperature zone to cause essentially complete melting and coalescence of the powders wherein at least a part of the titanium and at least a part of the boron combine to form titanium diboride and thereafter resolidified to form the composite powder particles.

Abstract: A process is disclosed for producing agglomerates of aluminum based material which is suitable for plasma melting rapid solidification processing. The process involves first forming a slurry comprising the aluminum based material and one or more fluxing agents and then removing the liquid medium from the slurry to produce agglomerates of the aluminum based material and the fluxing agent or agents.

Abstract: A process is disclosed for producing composite powder particles consisting essentially of a matrix phase and a reinforcement phase. The process involves entraining agglomerated particles in a carrier gas, the agglomerated particles consisting essentially of titanium diboride and particles of a metal selected from the group consisting of aluminum and aluminum based alloys. The agglomerated particles are fed through a high temperature zone having a temperature sufficient to allow the metal particles to melt, coalesce together, and encapsulate the titanium diboride particles. The metal is then resolidified, resulting in the formation of the composite powder particles wherein the matrix phase consists essentially of the metal and the reinforcement phase consists essentially of the titanium diboride particles.

Abstract: A composite powdered material is disclosed consisting essentially of particles having a metal matrix and one or more relatively uniform discrete dispersed reinforcement phases in the matrix, the reinforcement phases being of high strength or high hardness compounds selected from intermetallic compounds and metal compounds selected from the group consisting of metal borides, carbides, nitrides, oxides, carbonitrides, and mixtures thereof. The composite powdered particles are spheres of from about 25 to about 200 micrometers and the reinforcement phases have particles of a maximum size of less than about 10 micrometers. A process for producing this composite powder is disclosed which involves entraining in a carrier gas a plurality of powders wherein at least one of the powders supplies the metal from which the matrix is to be formed, and wherein at least two of the powders supply the constituents from which the reinforcement phases are to be formed.