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chromate conversion coating

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0045926
EISBN: 978-1-62708-235-8
...Abstract Abstract A batch of bimetal foil/epoxy laminates was rejected because of poor peel strength. The laminates were manufactured by sintering a nickel/phosphorus powder layer to a copper foil, cleaning, then chromate conversion coating the nickel-phosphorus surface, and laminating...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
... Conclusion Recommendations Example 2: Analysis of a Corrosion Failure of an Aboveground Storage Tank Electroplated Coatings Hot-Dip Coatings Vapor-Deposited Coatings Thermal Spray Coatings Conversion Coatings Phosphate Conversion Coatings Chromate Conversion Coatings Aluminum...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001292
EISBN: 978-1-62708-215-0
... the adjacent area of the other arm, these areas were inspected for cracking using a high-resolution dye penetrant. No further cracking was observed. Visual Inspection Visual inspection showed a light gold-colored (chromate-conversion-coated) shot-peened surface after paint removal. Macrofractography...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... been dissolved. Iron is nearly inert in air-free water and seawater, because there is limited cathodic reaction possible. If the surface of the metal is coated with paint or other nonconducting film, the rates of both anodic and cathodic reactions are greatly reduced, and corrosion will be retarded...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001706
EISBN: 978-1-62708-217-4
... procedures , pt. 1 20-60-00, ( 1994 ) 4. Canadian Specification 31-GP-103M , “Conversion Coating, Heavy Phosphate For Iron And Steel.” , ( 1989 ) 5. ASTM-D-3359 , Standard Test Methods for measuring Adhesion by Tape Test , ( 1990 ) 6. Military Specification MIL-C-16173E , Corrosion...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001109
EISBN: 978-1-62708-214-3
..., conversion of chlorides to sulfates, preferential stabilization of chlorides at the oxide/metal interface, and oxide flaking. X-ray diffraction analysis of the corrosion products confirmed the presence of the alkali salt species mentioned above, as well as alkali chromates, in addition to Cr 2 O 3 , Fe 2...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
... (0.00015 in.)—corresponding to coating weights of 0.59, 0.29, and 0.09 oz/ft 2 , respectively. These electrodeposited coatings are often given supplemental phosphate or chromate coatings to develop a specific color and, to a minor extent, enhance corrosion resistance and control torque scatter during...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... on stress-corrosion cracking, hydrogen embrittlement, and liquid-metal embrittlement of bolts and nuts. The article explains the most commonly used protective metal coatings for ferrous metal fasteners. Zinc, cadmium, and aluminum are commonly used for such coatings. The article also illustrates...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... oxidation rate versus temperature. LTHC, low-temperature hot corrosion; HTHC, high-temperature hot corrosion. Courtesy of U.S. Navy Fig. 26 Schematic of cross section of a thermal barrier coating (TBC). Calcium-magnesium-alumino-silicate (CMAS) deposits on the TBC surface, which upon melting...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... Surface hardening, nitriding, carburizing, anodic hard coating Excessive case thickness, microcracks, embrittled material at stress raisers Machining Tool marks, grinding cracks Welding Weld-metal defects, hydrogen-induced cracking, inclusions, improper structure The primary purpose...
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
... in protective coatings may lead to severe galvanic corrosion in the localized region of the coating imperfection. It is extremely dangerous to coat the anodic member of a couple because this may only reduce its active area, which severely accelerates the attack at these holidays in the otherwise protective...
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
... in protective coatings may lead to severe galvanic corrosion in the localized region of the coating imperfection. It is extremely dangerous to coat the anodic member of a couple because this may only reduce its active area, which severely accelerates the attack at these holidays in the otherwise protective...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
... that, although the wrought form of a metal or alloy is resistant to corrosion in a particular environment, the welded counterpart is not. Conversely, there are also many instances in which the weld exhibits corrosion resistance superior to that of the unwelded base metal. There also are times when the weld...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1