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precious metals

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Published: 01 December 1984
Figure 3-66 Examples of the microstructure of precious metals of the platinum family. (From Piotrowski and Accinno, Ref. 147, courtesy of T. Piotrowski, Englehard Ind. Div, Englehard Corp., reproduced courtesy of Elsevier Science Publishing Co., Inc.) More
Image
Published: 01 December 2015
Fig. 17 Precious metal impressed-current anode on offshore platform prior to launching in the North Sea. Courtesy of W.H. Thomason, Conoco, Inc. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060315
EISBN: 978-1-62708-261-7
..., corrosion-resistance alloys, superalloys, refractory metals, low-melting-point metals, reactive metals, precious metals, rare earth metals, and metalloids or semimetals. It also provides a brief summary on special-purpose materials, including uranium, vanadium, magnetic alloys, and thermocouple materials...
Image
Published: 01 August 2005
Fig. 5.1 Section through a link in a brazed carat gold chain, in which the chain stock comprises braze-cored wire. Courtesy of Cookson Precious Metals Ltd. Reprinted from Grimwade 2002 More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t5123000x
EISBN: 978-1-62708-351-5
... of gold and silver using foils of copper or copper alloyed to the more precious metals has been practiced earlier than 3000 B.C . One of the oldest known applications of brazing is the fabrication of a gold chalice and other objects found in the tomb of Queen Shab-Ad of Ur in the Euphrates valley, dated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240597
EISBN: 978-1-62708-251-8
... precious metals that, in addition to being measures of wealth, have important industrial applications. Finally, the fusible alloys are a group of over 100 alloys that have melting points lower than that of lead-tin eutectic solder. 32.1 Zirconium Zirconium is a reactive metal similar to titanium...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170550
EISBN: 978-1-62708-297-6
... they commonly occur together in nature. The use of noble metals, also commonly referred to as precious metals, pervades our everyday life. Gold, silver, and platinum are used extensively in making jewelry; gold, silver, and other alloys are used in restorative dentistry; and sterling silver is used for making...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290251
EISBN: 978-1-62708-319-5
.... Variants include precious metal clay and bronze carving blocks. The viscosity of the mixture is high, similar to pottery clay, but sufficient for hand molding, extrusion, or pressing into a cavity. As the water or oil evaporates, the mixture becomes stiffer, allowing for green forming by using machining...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060073
EISBN: 978-1-62708-261-7
... and for orthopedic implants. Iridium, Rhodium, Palladium, and Platinum Iridium, rhodium, palladium, and platinum are, along with gold, termed the precious metals. They are all very dense and very corrosion resistant. However, the term precious metals comes from the fact that all these metals are expensive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t51230189
EISBN: 978-1-62708-351-5
... the city of Ur. It remains one of the most popular styles, although well over 200 other varieties of chain are currently available. In mass-produced chain making, the links are fashioned from stock wire or tape. This may be a homogeneous precious alloy or cored with base metal; if the latter, during...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120123
EISBN: 978-1-62708-269-3
... − , MnO 4 2 − , WO 4 − , IO 3 − , VO 4 3 − , VO 3 − , NO 3 − , NO 2 − , S 2 O 3 2 − Precious metal ions Pt 2+ , Pt 4+ , Pd 2+ , Ru 3+ , Ir 3+ , Rh 3+ , Au 3+ Oxidizing organic compounds...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2010
DOI: 10.31399/asm.tb.hss.t52790235
EISBN: 978-1-62708-356-0
... and alloys D xxxxx Steels—designated by mechanical property N xxxxx Nickel and nickel alloys E xxxxx Rare earth and rare-earth-like alloys P xxxxx Precious metals and alloys F xxxxx Cast irons R xxxxx Reactive and refractory metals and alloys G xxxxx AISI and SAE carbon and alloy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910407
EISBN: 978-1-62708-250-1
... polymer electrode material coated onto copper conductors. Examples of polymer anodes are provided in the section “Applications of Cathodic Protection.” Precious metals are used for impressed-current anodes because they are highly efficient electrodes and can handle much higher currents than anodes...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t6244000x
EISBN: 978-1-62708-352-2
... the Latin solidare , which means to fasten together. Its earliest use in a completely English context as a noun meaning “a fusible metallic alloy used for uniting less fusible metal surfaces or parts” dates to about 1350. It is interesting to note that in 19th century English, just as in modern French...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030184
EISBN: 978-1-62708-282-2
... breeze backfill when maximum current density is 82 mA/m (25 mA/ft). ASTM D543, “Standard Test Method for Resistance of Plastics to Chemical Reagents.” Precious Metals Precious metals are used for impressed-current anodes because they are highly efficient electrodes and can handle much higher...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300227
EISBN: 978-1-62708-323-2
... will discuss some of the other metals that are used along with stainless steels to address environmental degradation issues: Nickel-base alloys Cobalt-base alloys Selected refractory metals Selected precious and pure metals Selected light metals Many applications of metals in hostile...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170596
EISBN: 978-1-62708-297-6
...-32.5Ag Alloy Pd-9.5Pt-9.0Au-32.5Ag alloy is used for brushes and slide contacts. It has a modulus of elasticity of 115 GPa (17 × 10 6 psi) and a proportional limit of 930 MPa (135 ksi), which are the highest for precious-metal contacts. Pd-26Ag-2Ni Pd-26Ag-2Ni is used in ac or dc contact...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290137
EISBN: 978-1-62708-306-5
... welding systems used for spot welding applications: (a) wedge-reed system and (b) lateral drive system. Source: Ref 6.12 Most industrial metals can be joined to themselves or to other metals by ultrasonic welding. Ductile metals, aluminum and copper alloys, and precious metals (gold, silver...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440231
EISBN: 978-1-62708-262-4
... and uranium alloys, and precious metals. Therefore, this chapter is intended to present only an overview of the heat treating of nonferrous alloys. First, a brief discussion of the effects of cold work and annealing on nonferrous alloys is presented. This is followed by a discussion of the mechanisms involved...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170003
EISBN: 978-1-62708-297-6
... during cooling. High-temperature brazing fillers can be produced from alloys containing silver and other precious metals with nickel and copper, while low-temperature solder alloys are made from lead, tin, silver, indium, antimony, cadmium, and zinc. Formability Good formability requires...