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electroplated gold

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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
... deposits are categorized according to specific guidelines based on film purity and hardness, regardless of the supporting electrolytes or gold salts. Fig. 5 Scanning electron microscopy images of a focused ion beam cross-sectioned electroplating sample prepared from (a) low current density...
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
... electroplating was invented in 1840. During the first 100 years electrodeposited gold was used primarily for its aesthetic appeal as a decorative finish. This article provides a description of the gold plating process and the electrolytes used. It discusses the decorative and industrial applications of gold...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001460
EISBN: 978-1-62708-173-3
... coating is protected by a finish of electroplated gold, particularly if the base metal is subject to temperatures that exceed the melting points of tin or tin-lead finishes prior to assembly. The MIL-G-45204C thickness recommendation for solderability is from 1.3 to 2.5 μm (50 to 100 μin.). However...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003157
EISBN: 978-1-62708-199-3
... or, more rarely, molybdenum is used where a high melting point is required. Platinum, palladium, and gold are used where reliable closure with low force is required. Brushes clad or electroplated with precious metals and brushes made of sintered alloys are important for general applications in power...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001459
EISBN: 978-1-62708-173-3
... of materials. Generally, the noble metals (for example, gold and silver) are readily solderable, because of limited oxide formation and strong reactivity with the solder. The materials that are most difficult to solder are ceramics and refractory metals, which require metal coatings to promote solder wetting...
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
... materials, leadframes Electroplated copper … Printed wiring Beryllium-copper alloys C17000, C17200, C17400 Contact springs Brass alloys C36000, C27000, C26000 Contact pins Phosphor-bronze alloys C51000, C52400 Contact pins Electroplated gold 99.9Au-0.1Co; 99Au-1Co Finish for contact...
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
...Ruthenium electroplating solutions Table 1 Ruthenium electroplating solutions Constituent or condition Amount or value General-purpose solution Ruthenium (as sulfamate or nitrosyl sulfamate), g/L (oz/gal) 5.3 (0.7) Sulfamic acid, g/L (oz/gal) 8 (1.1) Anodes Platinum...
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
... + 0.799 Platinum Pt 4+ 0.90 Gold Au + 1.68 Source: Ref 2 Recommended minimum thicknesses and typical applications for zinc and cadmium coatings electrodeposited on iron and steel Table 6 Recommended minimum thicknesses and typical applications for zinc and cadmium coatings...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006491
EISBN: 978-1-62708-207-5
... Electroplating is the deposition on the cathode of metallic ions from the electrolyte of an electrolysis cell. Chromium, nickel, copper, zinc, tin, indium, silver, cadmium, gold, lead, and rhodium elements as well as certain alloys are commercially deposited from aqueous solutions. Conductive oxides also can...
Book Chapter

By Alan Blair
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001252
EISBN: 978-1-62708-170-2
.... , Farr J.P.G. , and Street J. , What Chance the Elimination of Cyanide? , Trans. Inst. Met. Finish. , Vol 69 ( No. 3 ), p 8 – 10 • “Bath for Electroplating of Precious Metal Alloys,” German Patent No. DE 2445538 , 1976 • Blair A. , Formulating High Speed Gold...
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
.... (b) Depends on heat treatment. (c) TB00 temper. (d) TD02 temper Properties of gold metals used for electrical contacts Table 5 Properties of gold metals used for electrical contacts Alloy Solidus temperature Electrical conductivity, % IACS Hardness, HR15T Tensile strength...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001261
EISBN: 978-1-62708-170-2
... Cadmium 0.006 Chromium 0.200 Cobalt 0.014 Copper 0.013 Gallium 0.014 Gold 0.006 Indium 0.009 Iridium 0.069 Iron 0.025 Lead 0.006 Mercury 0.008 Nickel acid 0.047 Nickel alkaline 0.017 Nickel, black 0.025 Nickel, natural 0.025 Palladium 0.019...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001309
EISBN: 978-1-62708-170-2
... involving atmospheric exposure; however, the use of cadmium is being curtailed because of health and safety concerns associated with its use. Gold is usually applied over an electroplated undercoating of nickel or silver, but may be electroplated directly on the copper alloy. In the electronics industry...
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
... ability to form extensive ductile solid solutions with other metals Can be electroplated, electroformed, and deposited via electroless methods Effective whitener for gold Good catalytic activity Palladium resists tarnishing in ordinary atmospheres, but it does tarnish slightly upon outdoor...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001255
EISBN: 978-1-62708-170-2
..., and they can be used with practically any substrate material that is suitable for electroplating. While alloys such as copper-gold and copper-gold-nickel are commonly electroplated, these are usually considered as part of gold plating technology. The most frequently electroplated copper alloys are brass...
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
... , Properties and Selection: Nonferrous Alloys and Special-Purpose Metals , ASM International , 1990 , p 557 – 585 • Levy D.J. , Arnold C.R. , and Ma D.H. , Electroplating of Gold and Rhodium Directly on Molybdenum , AES Symp. Plating Difficult-to-Plate Metals , American...
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
... apparatus, as a freezing-point standard, as a high-melting solder to produce vacuum-tight pressure welds, for the lining of chemical equipment, and clad on phosphor bronze or nickel silver for contact springs in radio-frequency circuits. Besides decoration and for infrared reflectors, electroplated gold...
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
... coated with either solder or tin, with typical thickness ranging from about 6 to 12 μm. In some components, the copper leadframes are coated with a solderable palladium or gold flash (typical thickness, <0.125 μm). Fig. 1 Areas where corrosion can be observed in a typical IC component. 1...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003150
EISBN: 978-1-62708-199-3
...Abstract Abstract Precious metals include gold, silver, and six platinum-group metals, namely, platinum, palladium, ruthenium, rhodium, osmium, and iridium. This article focuses on the consumption, trade practices, properties, product forms, and applications of these metals and their alloys...
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
...Selected properties of the noble metals Table 1 Selected properties of the noble metals Property Metal Platinum Palladium Iridium Rhodium Osmium Ruthenium Gold Silver Atomic number 78 46 77 45 76 44 79 47 Atomic weight, amu 195.09 106.4 192.2 102.905 190.2...