1-20 of 302 Search Results for

tantalum powders

Sort by
Image
Published: 30 September 2015
Fig. 6 Particle shape of tantalum powder produced by sodium reduction of potassium tantalum fluoride. Courtesy of Prabhat Kumar More
Image
Published: 30 September 2015
Fig. 7 Particle shape of tantalum powder produced by electron beam melting, hydriding, crushing, and degassing. Courtesy of Prabhat Kumar More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006121
EISBN: 978-1-62708-175-7
.... The effects of processing conditions on the physical and chemical properties of tungsten, molybdenum, tantalum, niobium, and rhenium powders are reviewed. chemical properties molybdenum powders niobium powders physical properties powder production refractory metal powders rhenium powders tantalum...
Image
Published: 30 September 2015
Fig. 4 Capacitance of sodium-reduced and electron beam melted, degassed-hydride tantalum powder. Thirty min anode sintering temperature at anode green densities commonly used for each powder More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006124
EISBN: 978-1-62708-175-7
... Abstract This article discusses the pressing and sintering of various refractory metal powders for the production of intermediate products as well as special cases of finished products. The metal powders considered include tungsten, molybdenum, tantalum, niobium and their alloys, as well...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006123
EISBN: 978-1-62708-175-7
... Abstract This article focuses on the selection, properties, and applications of powder metallurgy refractory metals and their alloys, including tungsten, molybdenum, tantalum, niobium, and rhenium. molybdenum niobium powder metallurgy refractory metals rhenium tantalum tungsten...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001079
EISBN: 978-1-62708-162-7
... for tantalum is as powder and anodes for electronic capacitors, representing about 50% of total consumption. Mill products—sheet and plate, rod and bar, and tubing—constitute nearly 25% of tantalum consumption. The major end use for tungsten is in cemented carbides, which are used for cutting tools and wear...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001426
EISBN: 978-1-62708-173-3
..., including tantalum, niobium, rhenium, molybdenum, and tungsten. Refractory metal alloys are discussed in the order of decreasing weldability: tantalum, niobium, rhenium, molybdenum, and tungsten. microstructure molybdenum niobium refractory metals rhenium tantalum tungsten weldability welding...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003777
EISBN: 978-1-62708-177-1
... , Volume 2 of ASM Handbook . Powder production and powder metallurgy of refractory metals are described in Powder Metal Technologies and Applications , Volume 7 of ASM Handbook . This article focuses on the refractory metals of niobium, tantalum, molybdenum, tungsten, and rhenium. Other metals...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003825
EISBN: 978-1-62708-183-2
... tantalum, and Ta-10W has superior high-temperature strength (service up to 2480 °C, or 4500 °F). Tantalum is processed as a powder that can be sintered or remelted using an electron beam or vacuum arc. Ta-40Nb (UNS R05240) provides higher tensile and yield strength than pure tantalum, while retaining much...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003994
EISBN: 978-1-62708-185-6
... Abstract This article focuses on the forging characteristics of different types of refractory metals and alloys, namely, niobium and niobium alloys, molybdenum and molybdenum alloys, tantalum and tantalum alloys, and tungsten and tungsten alloys. forging molybdenum molybdenum alloys...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003151
EISBN: 978-1-62708-199-3
... high solid solubility for other refractory and reactive metals. The single largest use for tantalum is as powder and anodes for electronic capacitors, representing about 50% of total consumption. Tantalum is used as an alloying element in superalloys, and tantalum carbide is an important...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006133
EISBN: 978-1-62708-175-7
... niobium quality control refractory metal powders rhenium secondary operations tantalum tungsten tungsten heavy alloys welding REFRACTORY METALS are typically processed from powders into ingots that are subsequently swaged into round bars or rolled into plates. Additional rolling, drawing...
Image
Published: 01 December 2004
Fig. 18 Differential interference contrast light micrograph of powder metallurgy tantalum (hot isostatically pressed) showing equiaxed grains with substructure and fine porosity. Chemically polished (solution A, Table 2 ), swabbed for ∼90 s, and swab etched (solution B, Table 2 ) for ∼20 s More
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005735
EISBN: 978-1-62708-171-9
... if chromium- or nickel-bearing alloys are placed into the vessel with some form of electrical connection to the tantalum. Under low-pH conditions, tantalum will become sacrificial to those elements; however, a very small addition of platinum, mechanically blended with the tantalum powder during spraying...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001456
EISBN: 978-1-62708-173-3
... and molybdenum, as well as all of the recommendations made for niobium, can be considered for use with tantalum. The diffusion-sink titanium powder and a Ti-30V brazing filler alloy (braze temperature of 1760 °C, or 3200 °F) produced a remelt temperature of 2100 °C (3810 °F). A similar approach with a 33Zr...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006255
EISBN: 978-1-62708-169-6
... molybdenum alloys niobium niobium alloys refractory metals rhenium tantalum tantalum alloys tungsten tungsten alloys THE REFRACTORY METALS include tungsten, molybdenum, niobium, tantalum, and rhenium. Tungsten, molybdenum, and rhenium are typically processed by pressing and sintering powders...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005656
EISBN: 978-1-62708-198-6
..., were the first to describe manufacturing of a porous metal as an implantable material ( Ref 12 ). They discussed the fabrication of a porous femoral stem made from water-atomized cobalt alloys in which porosity was induced via powder metallurgy techniques. They believed this porous material to possess...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005167
EISBN: 978-1-62708-186-3
... by suspending powdered copper in acrylic resin. Ordinary oils and greases are commonly used in the forming of niobium and tantalum, because these metals are generally formed at room temperature. Petrolatum is frequently used for severe forming operations. Solid lubricants and suspensions of suitable...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006052
EISBN: 978-1-62708-175-7
..., tantalum, niobium, zirconium, molybdenum, vanadium, and chromium carbide powders are produced by carbothermal reduction of the respective oxide powders at temperatures in the range of 1300 to 2000 °C (2370 to 3630 °F). Titanium carbide powder can also be produced by direct carburization of metallic powder...