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electroplated chromium

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Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003833
EISBN: 978-1-62708-183-2
... Abstract This article discusses the corrosion of chromium electrodeposits and the ways for optimizing corrosion resistance. It describes processing steps and conditions for hard chromium plating. The steps include pretreatment, electroplating, and posttreatment. The article also provides...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001323
EISBN: 978-1-62708-170-2
... Abstract This article focuses on alternatives to chromium in both hard chromium plating and chromate conversion coating. These include electroless nickel plating, nickel-tungsten composite electroplating, spray coating applications, and cobalt/molybdenum-base conversion coating. The article...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001244
EISBN: 978-1-62708-170-2
... deposits. The cost of electroplating is often greatly influenced by the complexity of the workpiece. Simple shapes can be processed through all cleaning and plating sequences, with a minimum of approximately 33 μm (1300 μin.) of copper and nickel and 0.25 μm (10 μin.) of chromium, in approximately...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001243
EISBN: 978-1-62708-170-2
...) Converted to Brinell scale from values obtained with a Bierbaum microcharacter using a 9 g (0.3 oz) load The electroplating of hard chromium is very cost-effective, giving a high throughput with reliable, reproducible quality deposits that are unattainable by any alternative technology. The...
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
... many uses. Bronze plating is used where improved lubricity and wear resistance against steel are desired. Its good corrosion resistance makes it desirable as an undercoat on steel for bright nickel and chromium plate. Speculum alloys (45Sn-65Cu) are similar in appearance to silver and are used almost...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001258
EISBN: 978-1-62708-170-2
..., nickel-manganese alloys, and nickel chromium binary and ternary alloys. It also includes information on the environmental, health, and safety considerations for these nickel-base alloys. health and safety considerations nickel alloy plating nickel-chromium plating nickel-cobalt plating nickel...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001304
EISBN: 978-1-62708-170-2
... steel chromate conversion coatings chromium plating cleaning conversion coatings electrochemical finishing electrogalvanizing electroless nickel plating electroplating finishing hardfacing heat treatment high-strength low-alloy steel hot dip coatings ion implantation laser surface...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001271
EISBN: 978-1-62708-170-2
...-base coatings, which are applied primarily on automotive sheet steel, and electrolytic coatings, which are applied on the tin mill products used in the container industry. Figures 6 , 7 , 8 , and 9 show schematic diagrams of continuous steel electroplating lines for tin, chromium...
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
... buffing, electroless plating, immersion plating, electroplating, passivation, coloring, and organic coatings. Decorative chromium deposits are...
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
... discussed in the electroplating section. Chromium is the most promising of the metallic coatings for molybdenum. It offers excellent oxidation protection and is compatible with substrate; however, chromium is embrittled by nitrogen and will crack and spall on repeated thermal cycling. A nickel or nickel...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003022
EISBN: 978-1-62708-200-6
... coatings systems that are capable of adequate performance in each service condition. Table 3 Service condition classifications for decorative electroplated copper plus nickel plus chromium coatings on plastics Service condition classification Description Substrate/coating classification number...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001303
EISBN: 978-1-62708-170-2
... pleasing appearance. Typical applications include many different types of interior hardware, machine parts such as printing cylinders, decorative trim, and casings. Iron castings are also electroplated to enhance their wear resistance; for example, hard chromium plating is applied to the wear surfaces of...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003976
EISBN: 978-1-62708-185-6
... ( Fig. 26 and Table 7 ). Among the most common coatings are plated chromium and cobalt-alloy deposits, which adhere to the die surface via a mechanical bond, and weld fusion deposits, which entail a metallurgical bond. The latter can be used in rebuilding excessively worn dies as well. Recently, the...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006027
EISBN: 978-1-62708-172-6
.... Metals commonly plated are copper, chromium, nickel, iron, cadmium, zinc, indium, tin, lead, silver, and gold. Brass, bronze, zinc-iron, and zinc-nickel alloys also are plated. Each of these metals requires a different bath and different bath operating parameters (temperature, cathode current density...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001305
EISBN: 978-1-62708-170-2
... metals. When preparing stainless steel for electroplating, the following should be considered: Electrocleaning: When bright plating is desired, the alkalinity, current density, and temperature of the cleaning bath should be kept as low as possible, especially for the high-chromium alloys. To...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003105
EISBN: 978-1-62708-199-3
... electroplating with a multilayer copper-nickel-chromium coating to obtain a high-gloss metallic appearance and superior corrosion protection. For economic reasons, the desired degree of protection must be determined before a coating is selected. Temporary protection during storage or shipment usually can...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001307
EISBN: 978-1-62708-170-2
... with a greaseless compound and a cloth wheel. Buffing is seldom required for the finishing of heat-resistant alloys. Chromium, copper, nickel, and silver are sometimes electroplated on heat-resistant alloys in order to: Prepare for brazing Deposit brazing metal Provide antigalling...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001308
EISBN: 978-1-62708-170-2
... anode polarization, however, can cause a reversal of these relationships. (a) In a 6% sodium chloride solution. Source: Metal Finishing , Nov 1956 Electrodeposits of chromium, nickel, cadmium, copper, tin, zinc, gold, or silver are used for various decorative and functional applications. For...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001312
EISBN: 978-1-62708-170-2
... brush An optional step of rinsing the article in water can be practiced by using deionized water to free the article of any residual traces of the material used in previous steps. Preferred metals to be deposited on the article include copper, nickel, and chromium. The chemical compositions and...
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
... from a solution that contains 60 g of metal per liter, and a chromium solution can contain over 240 g of metal per liter. Gold, because of its price and the cost of the dragout losses, is rarely plated from a solution that contains more than 1 troy ounce per gallon (8.2 g/L). Some gold baths used for...