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anodic treatment

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Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001310
EISBN: 978-1-62708-170-2
... reliability. This article focuses on mechanical finishing methods, namely, barrel tumbling, polishing, buffing, vibratory finishing, fiber brushing, and shot blasting. It provides useful information on process control and difficulties with chemical and anodic treatments of magnesium alloys. The use...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003139
EISBN: 978-1-62708-199-3
... or anodic coatings on magnesium is to provide a suitable surface to promote the adhesion of subsequent organic coatings. Conversion coatings should not be regarded as protective treatments in their own right unless they are to be exposed only to noncorrosive environments. Under these conditions...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006511
EISBN: 978-1-62708-207-5
...) … Colorless, transparent oxide film with effect on reflectivity Used as a post-treatment after conventional anodizing is accomplished Sodium sulfate 10 wt% Sodium hydroxide 1 wt% Water 69 wt% Smudge remover Sodium carbonate 2 wt% 92–97 (198–207) … … … … Preserve reflectivity...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001281
EISBN: 978-1-62708-170-2
... process, and hard anodic process. It describes the limitations imposed by variables, such as alloy composition, surface finish, prior processing, temper or heat treatment, and the use of inserts, on the anodizing processes. The article explains the causes and means adopted for correcting several specific...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003680
EISBN: 978-1-62708-182-5
...Abstract Abstract Anodizing is one of the most common surface treatments of aluminum and is performed for corrosion protection. This article describes the structure and growth characteristics of the types of anodic oxide films such as a barrier-type oxide film and a porous-type anodic oxide...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003221
EISBN: 978-1-62708-199-3
... for chromic acid anodizing Table 5 Sequence of operations for chromic acid anodizing Operation Solution Solution temperature Treatment time, min °C °F Vapor degrease Suitable solvent … … … Alkaline clean Alkaline cleaner (a) (a) (a) Rinse (b) Water Ambient Ambient...
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
... of 1240 MPa, or 180 ksi, and above) may be reduced by about 50% when chromium plated because of the inherent crack structure of hard chromium. However, special techniques using shot peening and postplate heat treatments may be used to retain most of the original fatigue strength. Conventional Sulfate...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006512
EISBN: 978-1-62708-207-5
.... 2c ). This duplex anodizing treatment was followed by coloring in nickel-base electrolytes ( Fig. 2d ) to produce a range going from blue-gray to green-gray to yellow-browns. Fig. 2 Pore structure and metal distribution in conventional and interference finishes. Reprinted with permission from...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003674
EISBN: 978-1-62708-182-5
... coatings inorganic coatings cladding anodized film THIS ARTICLE addresses the general effects of composition, mechanical treatment, surface treatment, and processing on the corrosion resistance of aluminum and aluminum alloys. Most of the techniques used to alter the properties of aluminum...
Book Chapter

Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0006541
EISBN: 978-1-62708-183-2
...) and zinc (B) have a C rating. The meaning of the ratings are: Material code Table 1 Material code Code Bare metal Surface treatment typically used to reduce corrosion of bare metal A Magnesium Anodic coating+alkali-resistant paint or resin seal B Zinc, zinc coatings Anodic coating...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001315
EISBN: 978-1-62708-170-2
.... Some cycles employ a 2 to 3 min soak treatment followed by spray washing with the alkaline cleaner. The solution temperatures usually range from 70 to 80 °C (160 to 180 °F), but slightly lower temperatures may be more suitable for automated cleaning cycles that include more than 30 s of anodic cleaning...
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
..., blast cleaning, chemical descaling, pickling or etching, anodizing, autoclaving, polishing, buffing, vapor phase nitriding, and electroplating. Applications of these surface treatment processes are also reviewed. anodizing autoclaving blast cleaning buffing chemical descaling cleaning...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003672
EISBN: 978-1-62708-182-5
... inhibitors corrosion protection CORROSION is an oxidation reaction where the corroding metal is the anode in an electrochemical cell. In addition to the anode, there are three other components that are necessary for corrosion to occur: an aggressive environment, a cathode where the reduction reaction...
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
.... It describes the decorative and engineering applications of brass and bronze plating. The article also provides information on the treatment of waste water from brass and bronze plating operations. brass plating bronze plating copper alloy plating decorative applications electroplated coatings...
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
... lacquer. Anodizing is the more popular protective treatment, because it does not alter the original texture of a surface. Clear lacquers smooth out roughened surfaces and produce various degrees of gloss, which may be undesirable. Anodizing of a blasted aluminum surface results in a gray color because...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006522
EISBN: 978-1-62708-207-5
..., and empty space in general do not anodize. The side reactions that occur at the interface between the aluminum alloy substrate and the specific surface treatment must be kept in mind during alloy selection for an engineering application. Equilibrium Corrosion Processes—Aluminum Oxidation...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005707
EISBN: 978-1-62708-171-9
...) and thermochemical (carburizing, nitriding, and boriding) surface modifications, electrochemical treatments (electroplating, and anodizing), chemical treatments (electroless plating, phosphating, and hot dip coating), hardfacing, and thermal spray processes. It provides information on chemical and physical vapor...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003701
EISBN: 978-1-62708-182-5
... pretreatment methods of the incoming water and preboiler corrosion protection methods. It analyzes internal treatment and condensate treatment of boilers. The article discusses three types of cooling systems: once-through systems, open recirculating systems, and closed recirculating systems. The corrosion...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003820
EISBN: 978-1-62708-183-2
... effect is a unique and important aspect of magnesium corrosion. The negative difference effect is described by the observation that the rate of the cathodic reaction (hydrogen evolution) can increase even when the driving force for reduction decreases (by application of an anodic potential). In most...
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
... to surface discontinuities, making the time, temperature, and current density of the anodizing process critical. Complex surface contours also complicate the electroplating of aluminum alloys when anodic oxidation is used as a surface treatment. Because anodizing is an electrochemical process, projections...