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silver-infiltrated refractory metal

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Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006076
EISBN: 978-1-62708-175-7
...Abstract Abstract The two most important classes of materials that are manufactured via infiltration methods are copper- and silver-infiltrated refractory metals and refractory carbides, and copper-infiltrated steels. This article focuses on copper-infiltrated steels and discusses the basic...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006091
EISBN: 978-1-62708-175-7
...-sinter-infiltrate method. When infiltration is used, either all refractory metal powder is compacted to shape, or a small amount of silver or copper powder is blended with the refractory metal, compacted, and sintered in a reducing atmosphere. The sintered compact then is returned to the furnace; silver...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006099
EISBN: 978-1-62708-175-7
...; for example, tungsten is blended with an iron-nickel phase. On the opposite side (of solubility) are tungsten-copper, tungsten-silver, molybdenum-copper, and molybdenum-silver systems, where the solubility of refractory metals in molten metal is minimal to practically nil, but wettability is excellent...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001097
EISBN: 978-1-62708-162-7
...Properties of silver metals used for electrical contacts Table 4 Properties of silver metals used for electrical contacts Alloy Solidus temperature Electrical conductivity, % IACS Hardness, HR15T Tensile strength Density, g/cm 3 Elongation in 50 mm or 2 in., % Annealed Cold...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003157
EISBN: 978-1-62708-199-3
... in the sintered skeleton. After infiltration, the contact is sometimes chemically or electrochemically etched so that only pure silver appears on the surface. The contact thus treated has better corrosion resistance and performs better in the early stages of use. For small refractory-metal contacts...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006125
EISBN: 978-1-62708-175-7
... can also be achieved by liquid-phase sintering (LPS) for a particular class of tungsten-base alloys known as tungsten heavy alloys (WHAs). Porous molybdenum and tungsten parts can also be infiltrated with copper or silver to produce full-density composites. In special cases, refractory metals...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003135
EISBN: 978-1-62708-199-3
..., including pure copper P/M parts, bronze P/M parts, brass and nickel silver P/M parts, copper-nickel P/M parts, copper-lead P/M parts, copper-base P/M friction materials, copper-base P/M electrical contact materials, copper-base P/M brush materials, infiltrated parts, and oxide-dispersion-strengthened copper...
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
...-copper and tungsten-silver composites can also be processed by liquid-phase sintering, but are more commonly processed by infiltration. In this process, a porous tungsten powder compact is placed in contact with pure copper or silver, which is then heated to its melting point. The liquid metal...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003789
EISBN: 978-1-62708-177-1
... Aluminum P/M Alloys Brasses and Nickel Silvers Bronzes Titanium and Titanium Alloys Nonferrous P/M Materials Copper-Base Alloys Porous P/M materials Copper Tool steels Copper-Infiltrated Steels Infiltration Liquid-Phase Sintering Ferritic Stainless Steels Diffusion...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001105
EISBN: 978-1-62708-162-7
... cycle diagram for low-pressure dewaxing and overpressure sintering. Source: Ref 17 Fig. 16 Schemes for the formation of platelet reinforcements in reaction-infiltrated cermets. (a) Zirconium infiltrant. (b) Aluminum infiltrant. Source: Ref 20 Abstract Abstract Ceramic-metal...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003422
EISBN: 978-1-62708-195-5
... Moderate Silver, copper, titanium alloy 780 1435 Graphite to refractory metal Moderate Gold, palladium alloy 1190 2175 C-C to C-C, and graphite to graphite High Zirconium 1823 3315 C-C to C-C, and graphite to graphite Very high Hafnium 2180 3955 C-C to C-C, and graphite...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006017
EISBN: 978-1-62708-175-7
... of composite metals used for heavy-duty contacts, electrodes, counterweights, and radium containers. All of these composite materials contain refractory metal particles, usually tungsten, and a cementing material with a lower melting point, present in various proportions. Copper, copper alloys, and silver...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003175
EISBN: 978-1-62708-199-3
... of copper can be improved by the addition of small amounts of elements including beryllium, silicon, nickel, tin, zinc, chromium, and silver. When casting copper alloys, the lowest possible pouring temperature needed to suit the size and form of the solid metal should be adopted to encourage as small...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003063
EISBN: 978-1-62708-200-6
..., namely, discontinuously reinforced composites and continuous-fiber-reinforced composites. Processing methods include cold pressing, sintering, hot pressing, reaction bonding, melt infiltration, directed metal oxidation, sol-gel and polymer pyrolysis, self-propagating high-temperature synthesis...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003064
EISBN: 978-1-62708-200-6
... for initiation of melting °C °F Graphite to refractory metal Moderate Silver, copper, titanium alloy 780 1435 Graphite to refractory metal Moderate Gold, palladium alloy 1190 2175 C-C to C-C, and graphite to graphite High Zirconium 1823 3315 C-C to C-C, and graphite to graphite...
Book Chapter

By Erhard Klar
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003185
EISBN: 978-1-62708-199-3
.... Copper, iron, manganese, and silver are the main metals produced commercially by electrodeposition. Depending on the electrochemical polarization characteristics of a metal, it can be deposited as a loosely adhering, powdery deposit on the cathode, or as a smooth, dense, and brittle deposit, which...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006556
EISBN: 978-1-62708-290-7
... is similar to two-dimensional inkjet printing, because the print material is dispersed through an inkjet head. In the case of metal, the ink is a suspension of fine metal powder in a carrier fluid. At this time, XJet manufactures the only commercially available system. In its development, it used silver...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003056
EISBN: 978-1-62708-200-6
..., and to the behavior of the brazements in service. For example, for direct brazing of transformation-toughened zirconia ceramics, it was found that those stabilized with MgO or Y 2 O 3 (whether PSZ or TZP materials) were readily wetted and strongly bonded by silver-copper-based filler metals containing various...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001492
EISBN: 978-1-62708-173-3
... 1350 811 1490 950 1740 Nickel-titanium … … 55.1 … 44.9 985 1805 130 2390 1550 2820 Fig. 21 Use of composite brazing filler metal (two layers of silver-base filler metal and a copper shim) to join tungsten carbide to steel Fig. 22 Joint designs to optimize strength...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005926
EISBN: 978-1-62708-166-5
... exothermic furnace atmospheres include the clean heat treating of certain ferrous and nonferrous applications. These include annealing and tempering of steel, brazing of copper and silver, and sintering of powdered metals. The reducing properties of rich exothermic atmospheres may be varied to make them...