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lacquers

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Published: 01 January 2003
Fig. 2 Filiform corrosion on a clear-lacquered steel hammerhead exposed to humid conditions. Fine filaments have extended over the entire surface of the hammerhead, with filiforms originating at corners, grind marks, or other sites where the coating varies in thickness. More
Image
Published: 01 January 2003
Fig. 3 A lacquered steel can lid exhibiting filiform corrosion showing both large and small filaments partially oriented in the rolling direction of the steel sheet. Without this 10× magnification by a light microscope, the filiforms look like fine striations or minute tentacles. More
Image
Published: 01 December 2004
Fig. 51 (a) Microstructure of a brass coating with a clear lacquer film on a low-carbon sheet with a 45° mount. (b) Microstructure of a nickel coating on low-carbon sheet without the 45° angle. 2% nital etch. 1000× More
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006051
EISBN: 978-1-62708-172-6
... be incorporated into the formulation; and volatile components such as solvents, or water in emulsions and their composition. It provides general information on volatile organic compounds. The article describes the film-forming mechanisms of various coating types, namely, lacquers, chemically converting coatings...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003692
EISBN: 978-1-62708-182-5
... resins, thermoplastic resins, and cross-linked thermosetting resins. The autooxidative cross-linked resins include alkyd resins and epoxy esters. The article examines the two types of coatings based on thermoplastic resins: those deposited by evaporation of a solvent, commonly called lacquers, and those...
Image
Published: 01 January 2005
Fig. 47 Occasional premature discoloration was noted on polished and coated steel indoor furniture, which worsened over several weeks with threadlike features (filiform corrosion). The polished carbon steel sections were absent of visual blemishes prior to coating with a clear lacquer More
Image
Published: 01 January 2003
Fig. 11 Scratches in a nitrocellulose coating on aluminum induced by light abrasion. Hills and valleys in the foil are induced by a diamond-imprint gravure roll that applies the nitrocellulose as a lacquer. Scanning electron microscopy. 200× More
Image
Published: 01 January 2005
Fig. 48 The filiform corrosion problems of Fig. 47 are exacerbated by handling the unlacquered parts without gloves. Fingerprints are obvious in this photograph. Corrosion form and mechanism Localized corrosion, filiform corrosion Material Carbon steel, lacquer coated Product More
Image
Published: 01 January 2003
Fig. 1 Filiform corrosion on cast aluminum alloy automotive wheels that were lacquered with a clear coat to prevent dulling of the aluminum. Arrows indicate sites of significant activity. Note that each filiform originates at sharp corners where the clear coat is very thin, cracked, or severed. More
Image
Published: 15 June 2019
Fig. 23 Filiform corrosion on cast aluminum alloy automotive wheels that were lacquered with a clear coat to prevent dulling of the aluminum. Arrows indicate sites of significant activity. Note that each filiform originates at sharp corners where the clear coat is very thin, cracked More
Image
Published: 01 January 1994
Fig. 2 Five-year Gulf Coast corrosion performance of coated AZ91D die cast magnesium (left) versus cold-rolled carbon steel (right). Both panels were cleaned, iron phosphatized, coated with 18 μm (0.7 mil) of baked cathodic epoxy primer and 12 to 20 μm (0.5 to 0.8 mil) of acrylic lacquer More
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006504
EISBN: 978-1-62708-207-5
... by an anodic coating or clear 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...
Image
Published: 01 January 2005
to passivate and produce a corrosion-resistant oxide barrier film. The tines of the forks were ground and polished and generally reflective; a lacquer coating was disturbed by filaments of filiform attack. The plastic enclosure, which was moist and contained chlorides, experienced condensation and evaporation More
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003614
EISBN: 978-1-62708-182-5
... aluminum magnesium FILIFORM CORROSION occurs on metallic surfaces coated with organic films that are typically 0.05 to 0.1 mm (2 to 4 mil) thick. Common objects such as a coated aluminum automobile wheel ( Fig. 1 ) and a lacquered hammerhead ( Fig. 2 ) are susceptible. The pattern of attack...
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
... parts (d) Satin Greaseless compound Loose cloth wheel 305 diam by 50–510 wide 12 diam by 2–20 wide 1800 (a) Clean brush often by running pumice stone across face of wheel. (b) Lacquer after scratch brushing. (c) Lacquer after finishing. (d) Chromium plate after finishing...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006018
EISBN: 978-1-62708-175-7
... steel, tungsten carbide  Lacquers Silver, brass, bronze, aluminum  Mechanical (peen) plating Zinc, lead, tin, brass, copper, cadmium  Slurry coating Nickel  Roof coatings Aluminum  Spray coating Iron, aluminum, zinc, tin, nickel alloys, copper, bronze, stainless steel, tungsten...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006531
EISBN: 978-1-62708-207-5
... and lacquered or painted; applies to products that are strain hardened and subjected to some thermal operation during the subsequent painting or lacquering operation H41 Strain hardened and lacquered or painted to a temper below 1 4 -hard condition H42 Strain hardened and lacquered or painted...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003818
EISBN: 978-1-62708-183-2
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006489
EISBN: 978-1-62708-207-5
... on aluminum products. The process may be used for final finishing, but it is more often used as an intermediate step prior to anodizing, conversion coating, lacquering, or other finishing treatments. Chemical etching also is used in conjunction with buffing or chemical brightening. The advantage...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001277
EISBN: 978-1-62708-170-2
...-linking agents that require heat for polymerization. Lacquers Lacquers are compositions based on natural or synthetic thermoplastic film-forming materials dissolved in organic solvent. These dry primarily by solvent evaporation. Lacquers are generally characterized by fast drying properties...