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palladium contact alloys

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Image
Published: 01 January 1990
combination with a spherical surface shows considerably longer life than some other combinations of silver sintered products; it did not weld in 100 operations. 24 V dc, 100 A: Shown is the scatter of contact potential after 200,000 operations for several samples of different alloy combinations. Under More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003150
EISBN: 978-1-62708-199-3
... with copper, palladium, platinum, or gold. These alloying elements increase the hardness, but decrease the electrical conductivity. Additional information on silver and silver-base alloys used for electrical contacts can be found in the Section “Special-Purpose Materials” in this Handbook. Jewelry...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006259
EISBN: 978-1-62708-169-6
... eutectic 150 550 80 1 100 350 50 15 Platinum Group Metal (PGM) Binary Alloys These alloys find critical use in the medical device, automotive, aerospace, electrical contacts, electronic, and sensor industries. Palladium, iridium, and rhodium show solubility in platinum for the entire...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003157
EISBN: 978-1-62708-199-3
... of impacted dirt, with a sulfide film acting as a dirt catcher. For many applications, silver is too soft to give acceptable mechanical wear. Alloying additions of copper, cadmium, platinum, palladium, gold, and other elements are effective in increasing the hardness and modifying the contact behavior...
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
.... Alloying additions of copper, cadmium, platinum, palladium, gold, and other elements are effective in increasing the hardness and modifying the contact behavior of silver. These additions do, however, lower both the electrical conductivity and the oxidation resistance relative to pure silver. Fine Silver...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001254
EISBN: 978-1-62708-170-2
... Palladium has been electroplated since before the turn of the 20th century. However, it stirred little interest until the 1960s and 1970s, when the price of gold peaked, prompting a search for alternatives. Palladium plating is currently used for jewelry and electrical contacts; however, the decorative...
Image
Published: 01 January 1990
Fig. 16 Effect of composition and polarity on life of some platinum and palladium alloy contacts actuated by a bimetal element. Sustained arcing affects the bimetal, thus indicating effectiveness of contact combinations by time for 100 operations. More
Book Chapter

Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001087
EISBN: 978-1-62708-162-7
... in various processes; for example, widely used agricultural fertilizers are produced with the aid of a platinum-rhodium alloy catalyst woven in the form of gauze, and auto emissions are reduced through the use of platinum-group alloy catalysts. Electrical contacts containing palladium are essential...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001088
EISBN: 978-1-62708-162-7
..., and palladium and their corresponding alloys. chemical composition chemical properties electrical properties fabrication characteristics mechanical properties optical properties physical properties precious metals thermal properties Silver and Silver Alloys Commercially Pure Silver...
Image
Published: 01 January 1990
Fig. 3 Hardness and electrical resistivity versus alloy content for palladium contacts More
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004209
EISBN: 978-1-62708-184-9
... and evaluation of dental materials are summarized. The article examines the effects of restoration contact on electrochemical parameters and reviews the concentration cells developed by dental alloy-environment electrochemical reactions. The composition and characterization of biofilms, corrosion products...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003829
EISBN: 978-1-62708-183-2
..., in order to dispersion strengthen silver in, for example, the Ag-10MgO alloy used for electrical contacts. The information on oxygen in silver is reviewed in Ref 12 . The causes and characteristics of sulfur-induced tarnish on silver and silver-rich alloys are reviewed in Ref 6 . Sulfur in air...
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: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005670
EISBN: 978-1-62708-198-6
... modern stents noble metals osmium palladium physical properties platinum precious metals rhodium ruthenium traditional amalgam alloys THE FOCUS of this article is a review of noble and precious metal use for biomedical applications. The noble metals include gold, platinum, palladium...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004172
EISBN: 978-1-62708-184-9
... is anodic in nature (easily corroded when wet). When the Alloy 42 leadframes are bundled together prior to plating, care is taken not to have compound and the leadframe in contact because such packing would result in an imprint of the leadframe fingers, with appearance ranging from a light gray imprint...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003776
EISBN: 978-1-62708-177-1
... micrographs, comparing and contrasting the microstructural features of gold, platinum, iridium, palladium, and ruthenium-base alloys. It examines pure gold, intermetallic gold compounds, gold and platinum jewelry alloys, platinum-containing shape memory alloys, and alloys consisting of platinum, aluminum...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001454
EISBN: 978-1-62708-173-3
... then be employed. Another very common silver contact alloy is coin silver (90Ag-10Cu). Sterling silver (92.SAg-7.5Cu) is well-known for its application in jewelry, flatware, and decorative household serving utensils. The platinum-group metals are platinum, palladium, iridium, rhodium, ruthenium, and osmium...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003142
EISBN: 978-1-62708-199-3
... group includes noble metals such as platinum, palladium, and rhodium. The second includes nickel, molybdenum, and tungsten. The third group includes zirconium, tantalum, chromium, and possibly molybdenum. Considerable work has been done on the use of noble metals as alloying additions in titanium...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003814
EISBN: 978-1-62708-183-2
... materials contain small quantities of either palladium or ruthenium, which have a powerful, positive influence on corrosion resistance. The group 3 materials are more highly alloyed but maintain their predominantly alpha microstructures. They possess higher strengths than the group 1 and 2 materials, thus...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006395
EISBN: 978-1-62708-192-4
.... This is especially true with materials that have geometries that contain sharp corners, bends, and protruding shapes. (See the variation in gold strike layer thickness in the electroplated Paliney pins in “ Example 2: Coating Layers of Electrical Contact Alloy (Paliney) for Creating an Inert Lubricating Surface...