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gold contact alloys

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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...
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
... colors of the materials, account for their use for jewelry, eyeglass frames, and rings. These alloys are also used for certain rubbing contacts in small electrical devices. Gold-silver alloys containing about 70% Au, generally with a few percent platinum, resist both oxidation and sulfidation, and have...
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: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006259
EISBN: 978-1-62708-169-6
... for electrical contact and dental applications. Typical properties for some gold jewelry alloys are illustrated by the data presented in Table 1 . Typical properties of some karat gold alloys before and after annealing Table 1 Typical properties of some karat gold alloys before and after annealing...
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.a0001088
EISBN: 978-1-62708-162-7
.... Electrolytic corrosion and pitting may result from contact with other metals. Dental amalgam is attacked readily by inorganic acids. Gold and Gold Alloys Commercial Fine Gold Commercial Names Common Name Called proof gold if more than 99.99% Au Applications Typical Uses The usual...
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
... Schematic of two restorations making intermittent contact due to biting. The restoration in the lower arch, which is an amalgam, is more active than the restoration in the upper arch, which is a gold-base alloy. Two possible current pathways are shown. An additional path very likely to occur would...
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
.... Lithium-containing filler metals that are joined in protective atmospheres are self-fluxing. Gold (BAu) alloys are high-cost filler metals that are used in specialized applications, such as vacuum and electronic products. Although these filler metals can join copper alloys, they are generally not used...
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
... of the cured ink symbol was done by soaking the gold lid package in a sodium hydroxide solution at an elevated temperature. If the cleaning was properly carried out, the cured ink would be removed and the package reused. However, if the ceramic units were thrown into the sodium hydroxide solution, contacts...
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...
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
... corrosion control aspects, such as the position of printed circuit boards (PCBs) and proper location of connectors for insertion of the PCBs. It discusses various materials and alloys considered for connectors, PCB contacts, and circuits. The article concludes with a discussion on the effects...
Image
Published: 01 January 2006
Fig. 13 Schematic of two restorations making intermittent contact due to biting. The restoration in the lower arch, which is an amalgam, is more active than the restoration in the upper arch, which is a gold-base alloy. Two possible current pathways are shown. An additional path very likely More
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003631
EISBN: 978-1-62708-182-5
... act like an abrasive (such as lapping rouge) and increase the rate of material removal. This type of fretting in ferrous alloys is recognized easily by the red material oozing from between the contacting surfaces. Fretting can also persist in contacts where no corrosion exists. For example, gold...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004170
EISBN: 978-1-62708-184-9
... are primarily based on their electrical, magnetic, and optical properties, ranging from noble metals such as gold and silver to more reactive metals such as aluminum and its alloys. Table 1 shows typical applications of conductors and contact materials ( Ref 18 ). The functionality of devices requires...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003834
EISBN: 978-1-62708-183-2
... of clad metals by degree of difficulty in bonding In most cases, when a metal is named, alloys of that metal also apply. Easy to bond Copper/steel Copper/nickel Copper/silver Copper/gold Aluminum/aluminum alloys Tin/copper Tin/nickel Gold/nickel Difficult to bond...
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: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001253
EISBN: 978-1-62708-170-2
... in the price of gold. Economics also determines the total consumption of gold. In the recent past, when the price of gold vaulted above $500 per troy ounce, many electronics companies replaced some of the total thickness of gold with undercoats of palladium or palladium-nickel alloys. Others abandoned gold...
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
.... Some electrical contacts have been made with a 60 to 70% Ag alloy containing up to 30% Au. A ternary Au-24Ag-6Pt alloy is extensively used in telephone equipment. Silver-gold binary alloys are used for jewelry and dental applications as well ( Ref 13 , 14 , 15 , 16 , 17 ). Alloys of silver...
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
... on the ancient history of noble and precious metal use in dentistry is provided. The article discusses the use of direct gold dental filling materials, direct silver dental filling materials, traditional amalgam alloys, high-copper amalgam alloys, and gallium alloys in biomedical applications. It also provides...
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...