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noble metal alloys

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Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003620
EISBN: 978-1-62708-182-5
..., and noble metal alloys dealloying. The current-potential behavior of a binary alloy undergoing selective dissolution is reviewed. The article highlights the four mechanisms required for the formation of porous metals: ionization-redeposition, surface diffusion, volume diffusion, and percolation model...
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
... discussion 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...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004181
EISBN: 978-1-62708-184-9
... resistance of various metals and alloys in HCl, including carbon and alloy steels, austenitic stainless steels, standard ferritic stainless steels, nickel and nickel alloys, copper and copper alloys, corrosion-resistant cast iron, zirconium, titanium and titanium alloys, tantalum and its alloys, and noble...
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
... control: noble metal clad systems, corrosion barrier systems, sacrificial metal systems, transition metal systems, complex multilayer systems, and clad diffusion alloys. cladding corrosion control sacrificial metal systems clad metals noble metal clad systems corrosion barrier systems...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003808
EISBN: 978-1-62708-183-2
...Abstract Abstract From the standpoint of corrosion protection of iron and steel, metallic coatings can be classified into two types: noble coatings and sacrificial coatings. This article focuses on hotdipped zinc, aluminum, zinc-aluminum alloy and aluminum-zinc alloy coatings. It discusses...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003616
EISBN: 978-1-62708-182-5
... current density ( i corr ) as illustrated ( Fig. 6 ). Alloy systems ennobled in this fashion are relatively uncommon and often require very system-specific alloying additions, habitually noble metals (e.g., platinum, gold, palladium, etc.). Frequently, ennoblement is achieved only after enrichment...
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
... been used. The gold-base alloys contain silver and copper as principal alloying elements, with smaller additions of palladium, platinum, zinc, indium, and other noble metals as grain refiners. The silver-base alloys contain palladium as a major alloying element, with additions of copper, gold, zinc...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003607
EISBN: 978-1-62708-182-5
... dissimilar metals or alloys causes electron flow between them when they are electrically coupled in a conductive solution. The direction of electron flow, and therefore the galvanic behavior, depends on which metal or alloy is more active. The more active metal or alloy becomes anodic, and the more noble...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005709
EISBN: 978-1-62708-171-9
... attack of the substrate. Exclusion of oxygen sometimes can cause crevice corrosion. Fig. 1 Galvanic series of selected metals and alloys in seawater showing their corrosion potentials. Adapted from Ref 4 Cathodic or Noble Coatings Anodic or Sacrificial Coatings Application...
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: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005735
EISBN: 978-1-62708-171-9
... and the noble coating with an electrolyte will result in a rapid attack of the ferrous metal, that is, the substrate. Unsealed areas of the coating, stress fractures, or other inadvertently exposed edges will, unfortunately, ensure such exposure. Generally, the removal of the coating by such corrosion is rapid...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001260
EISBN: 978-1-62708-170-2
... being developed. This article is focused mainly on the science and engineering of multiple-layer metallic alloys with nanometer-scale modulation wavelengths, because these are the materials that have gained the most attention for surface engineering. Throughout this chapter a solidus, or virgule...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001296
EISBN: 978-1-62708-170-2
..., potentials are listed for these metals under different conditions. As can be seen, the order of the different metals changes. For corrosion processes, such tables indicate which metal of a pair in contact is more noble or less noble. Factors influencing the actual potential values are temperature...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003158
EISBN: 978-1-62708-199-3
... cost, and great versatility of application. Thermocouples are grouped into two broad categories, namely, standard thermocouples, including five base-metal thermocouples and three noble-metal thermocouples that have been given letter designations, and nonstandard thermocouples, including iridium-rhodium...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
... by metal dissolution or oxidation. The more cathodic material is more corrosion resistant (i.e., more noble). Fig. 3 Galvanic series of metals and alloys in seawater. Alloys are listed in order of the potential they exhibit in flowing seawater; those indicated by the black rectangle were tested...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... galvanic cell are prone to corrode by metal dissolution or electrochemical oxidation. The more cathodic material is more corrosion resistant (i.e., more noble). Fig. 3 Galvanic series of metals and alloys in seawater. Alloys are listed in order of the potential they exhibit in flowing seawater...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003687
EISBN: 978-1-62708-182-5
... be pore free and flaw free. It is very difficult to obtain impervious coatings of more noble metals on steel or zinc alloys. Substantial metal thicknesses, usually 25 μm (1 mil) or more, are required. With some of these metallic deposits, particularly the noble metals, thinner coatings applied by pulse...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003822
EISBN: 978-1-62708-183-2
..., as discussed in a subsequent section of this article. In all cases, the basic remedy aims at maintaining creviced metal surfaces at sufficiently noble potentials where titanium alloy passivity is assured ( Ref 20 ). Crevice Corrosion Testing Crevice corrosion testing of titanium alloys generally aims...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003614
EISBN: 978-1-62708-182-5
... attributed to the fine grain size and enrichment of alloying and trace elements in the layer, most notably magnesium. Noble intermetallic particles such as Al 3 Fe dispersed throughout the layer are believed to be important in triggering electrochemical activity of the layer by forming microgalvanic couples...
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...