1-20 of 48 Search Results for

platinum-group metal anodes

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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
... these PGMs along with the types of anodes used in the process. anodes electrolytes electroplating iridium plating osmium plating palladium plating platinum plating platinum-group metal anodes rhodium plating ruthenium plating THE SIX PLATINUM-GROUP METALS (PGMs), listed in order of...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001313
EISBN: 978-1-62708-170-2
..., molybdenum, tungsten, and rhenium. With the exception of two of the platinum-group metals, osmium and iridium, they have the highest melting temperatures and lowest vapor pressures of all metals. The refractory metals are readily degraded by oxidizing environments at moderately low temperatures, a property...
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
... , 17 ). Both demand and cost fluctuations are principally due to instability of the producing countries. Rhodium has an fcc crystal lattice structure, a strong silver-white color, and a high melting point ( Table 1 ). The white color of rhodium is the most vibrant of any of the platinum-group metals...
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
... elements. The standard electrode potential for silver (Ag↔Ag + + e − ) is +0.79 V and is exceeded only by gold and the platinum group metals. Annealed silver has relatively low yield and tensile strengths, but appreciable strength can be induced through cold working. Tensile strength can be...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003825
EISBN: 978-1-62708-183-2
... as platinum and other noble metals, to tantalum and other metals has received further attention in efforts to develop improved anodes for cathodic protection ( Ref 42 ). The first of the precious-metal-containing anodes to become commercial was platinum or platinum alloy on a titanium substrate. The...
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
... uncommon situation, accelerated corrosion may occur when titanium is coupled to more noble metals. In its normal passive condition, titanium is beneficially influenced by materials that exhibit more noble (positive) corrosion potentials. In this regard, graphite and various noble metals (such as platinum...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001245
EISBN: 978-1-62708-170-2
..., “Copper-Accelerated Acetic Acid Salt Spray [Fog] Testing”) was 10 to 20 μm with conventional chromium and 1 to 6 μm with microdiscontinuous chromium. Corrosion studies conducted by plating suppliers, nickel producers, and groups such as ASTM Committee B-8 have confirmed that multilayer nickel coatings...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003836
EISBN: 978-1-62708-183-2
... been achieved ( Ref 36 ). Techniques for producing glassy metals can be divided into three main groups ( Ref 37 ). When subjected to elevated temperatures, devitrification will occur in many metallic glasses, which results in changes in properties. The glass transition temperature is, of...
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
... lightweight aluminum A wide range of precious metals is clad to lower-cost materials. Platinum-clad niobium consists of a thin layer of the precious metal bonded to a niobium substrate. This clad material, available in strip, wire, and rod form, is used as an anode for impressed-current cathodic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003151
EISBN: 978-1-62708-199-3
..., tungsten, and rhenium. With the exception of two of the platinum-group metals, osmium and iridium, the refractory metals have the highest melting temperatures (>2000 °C, or 3630 °F) and the lowest vapor pressures of all metals. They are readily degraded by oxidizing environments at moderately low...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003245
EISBN: 978-1-62708-199-3
... nugget, heat-affected zone, and a portion of the adjacent base metal. This group of steels is comprised of wrought steels that have carbon contents ranging from about 0.25 to 0.50%, and, for the alloy grades, total alloy contents up to about 7% (but mostly less than 3%). The methods of preparing...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003247
EISBN: 978-1-62708-199-3
... presents special problems that are not often encountered in preparing specimens of other metals. However, many of the steps in preparation are similar or identical to those for other metals. METALLOGRAPHIC TECHNIQUE differs widely for the several groups of magnetic materials that include...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003244
EISBN: 978-1-62708-199-3
... the same as for electropolishing, except that voltage and current densities are considerably lower. The specimen is connected to be the anode, and some relatively insoluble but conductive material, such as stainless steel, graphite, or platinum, is used for the cathode. Direct-current electrolysis is...
Book Chapter

By John C. Bittence
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003222
EISBN: 978-1-62708-199-3
... electrorefined, and the anode sludge containing the precious metals can be sent to a toll refiner. Platinum-group metals can be recovered from telephone relay scrap, reed switches ( Ref 14 ), and gold from various contacts ( Ref 15 ) by mechanical processing and hydrometallurgical treatments ( Ref 16...
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
..., copper, gold, hafnium, iridium, lead, magnesium, nickel, niobium (columbium), osmium, palladium, platinum, rhodium, ruthenium, silver, tantalum, tin, titanium, uranium, zinc, and zirconium. Also covered in this Section are several specialty nonferrous products that cannot easily be categorized by...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005654
EISBN: 978-1-62708-198-6
...' knowledge there has been only one research group that has performed CF measurements in vivo in an animal model. Morita et al. ( Ref 191 ) built a fixture capable of fatigue testing in the tibia of a living rabbit. They tested type 316 stainless steel and a cobalt-bearing stainless steel (COP), which were...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003137
EISBN: 978-1-62708-199-3
... groups leads to damage of the more anodic metal; the larger the difference in galvanic potential between groups, the greater the corrosion. Accelerated damage due to galvanic effects is usually greatest near the junction, where the electrochemical current density is the highest. Table 2 Galvanic...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006049
EISBN: 978-1-62708-172-6
... change slightly depending on the metal composition and the environmental chemistries. The most common galvanic series is that of metals and alloys in seawater ( Table 1 ). Table 1 Galvanic series of some commercial metals and alloys in seawater ↑ Platinum Noble or cathodic Gold...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005683
EISBN: 978-1-62708-198-6
... . The corrosion environments for medical implants are the extracellular human body fluids, very complex solutions containing electrolytes and nonelectrolytes, inorganic and organic constituents, and gases. Interstitial fluid and blood plasma are the specific environments for a large group of implants...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003142
EISBN: 978-1-62708-199-3
... 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. An outgrowth of this...