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Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003157
EISBN: 978-1-62708-199-3
... Abstract Electrical contacts are metal devices that make and break electrical circuits. This article describes the property requirements such as electrical conductivity, mechanical properties, chemical properties, fabrication properties, and thermal properties of make-break arcing contacts...
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
... Abstract Electrical contacts are metal devices that make and break electrical circuits. This article provides information on materials selection criteria and failure modes of make-break contacts. It describes the property requirements for make-break arcing contacts, namely, electrical...
Book Chapter

By Bo Hu
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
... Abstract Electrical contacts are made of elemental metals, composites, or alloys that are made by the melt-cast method or manufactured by powder metallurgy (PM) processes. PM facilitates combinations of metals that ordinarily cannot be achieved by alloying. This article describes the processing...
Image
Published: 30 September 2015
Fig. 3 Test data from evaluations of electrical contact materials. (a) Contact resistance vs. contact force. (b) Contact welding characteristics. (c–e) Contact erosion characteristics in short-circuit tests More
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Published: 15 December 2019
Fig. 19 Probes making electrical contact with a sample. Also note the gas injection system nozzle for gas delivery to the same area. Courtesy of H. Schulz of Zeiss Microscopy GmbH and A. Rummel of Kleindiek, GmbH More
Image
Published: 01 June 2012
Fig. 11 Pin-on-disk tribometer setup for electrical contact resistance measurement showing the ball holder that is electrically isolated from the system More
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Published: 01 June 2012
Fig. 12 Coefficient of friction (COF) and electrical contact resistance (ECR) plotted as a function of time for a 100Cr6 steel ball in contact with a polypropylene coating More
Book Chapter

Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005445
EISBN: 978-1-62708-196-2
... steels and alloys; thermostat metals; electrical contact materials; and magnetically soft materials. electrical conductivity electrical resistivity aluminum aluminum alloys copper copper alloys electrical heating alloys relay steel thermostat metal electrical contact materials...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005842
EISBN: 978-1-62708-167-2
... flux concentrators on coil life. It also reviews the importance of having appropriate and reliable electrical contacts. camshafts clamshell inductors copper crack propagation crankshafts current density electrical contacts failure mode frequency induction coils induction hardening...
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
... 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 P/M materials. copper alloy powders copper powders...
Book Chapter

By N.X. Randall
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005668
EISBN: 978-1-62708-198-6
.... The article illustrates a practical tribocorrosion setup that allows a user to perform wear tests in corrosive environments under well-defined electrochemical conditions and at controlled temperature. It explains the effect of changes in electrical contact resistance on tribological mode. The article...
Image
Published: 31 October 2011
Fig. 16 Contact-tip-to-work distance (CTWD) or electrical stickout More
Book Chapter

By Manfred Hopf
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005909
EISBN: 978-1-62708-167-2
... contacts fiber optic sensors induction furnaces induction melting insulation resistance refractory lining refractory materials wear monitoring MELTING WITH INDUCTION crucible furnaces (ICFs) is a well-established and reliable technology. The mechanical and electrical construction, power supply...
Image
Published: 01 January 1990
Fig. 14 Comparison of erosion and welding characteristics of selected electrical contact materials. All contacts were butting, with a closing force of 980 mN (0.22 lbf), an opening force of 735 mN (0.165 lbf) and closing and opening speeds of 38 mm/s (1 1 2 in./s). Contacts operated More
Image
Published: 01 January 2003
Fig. 7 Fretting of cobalt-gold-plated copper flats in contact with solid gold in an electrical contact. (a) After 1000 cycles. (b) After 10 4 cycles. (c) After 10 5 cycles. (d) After 10 6 cycles. Source: Ref 8 More
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003150
EISBN: 978-1-62708-199-3
... circuit board assemblies; silver, gold, and platinum-group metals for electrical contacts; the use of organometallic compounds containing platinum for cancer chemotherapy drugs; and many other applications. The Precious Metals Industry Resources and Consumption Silver Despite being...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006105
EISBN: 978-1-62708-175-7
... copper powders electrical contacts friction materials lubricant powder properties pressing sintering structural defects COPPER POWDERS are selected for powder metallurgy (PM) applications that require high thermal or electrical conductivity, good corrosion resistance, moderate strength, high...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005839
EISBN: 978-1-62708-167-2
... a part and presenting it to the inductor during the initial inductor design. The article provides information on coil leads/busswork and contacts that mechanically and electrically connect the induction coil head to the power supply. It concludes with a discussion on flux and oxide removal, leak and flow...
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Published: 30 November 2018
Fig. 16 Photos of (a) an anodizing line and (b) an active anodizing process. The flight bar, to which the racks, loaded with components for anodizing, are attached, makes electrical contact across the tank, which is filled with the electrolyte that is being vigorously agitated to help keep More
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004129
EISBN: 978-1-62708-184-9
... cracking were highlighted as specific corrosion problems associated with these components. In 1975, the Tank and Automotive Command highlighted the corrosion on components such as relays, starters, and motors ( Ref 14 ). In 1979, a report was written on electrical contacts in submarine-based electronic...