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phosphate conversion coating

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Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300335
EISBN: 978-1-62708-323-2
... (electrodeposited), and it has endured fifty or more years of wear and abuse in countless plumbing fixtures; similarly, glass hardens a surface. Coatings that are applied to assist surface separation also go back more than fifty years. Phosphate conversion coatings (manganese and iron phosphate) can have...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910363
EISBN: 978-1-62708-250-1
..., a phosphate conversion coating, a primer, and a top coat. A desirable coating system provides chemical resistance, low moisture permeability, adhesion, flexibility and impact resistance, ease of application, durability, and affordability. Specific applications may require other coating properties as well...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350095
EISBN: 978-1-62708-315-7
... Abstract This chapter provides practical information on surface treatments that work by altering the surface chemistry of metals and alloys. It discusses the use of phosphate and chromate conversion coatings as well as anodizing, steam oxidation, diffusion coatings, and pack cementation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
... with aluminum; namely, zinc phosphate, calcium aluminate, or aluminum fluoride. The lubricants used with these conversion coatings include soaps and molybdenum disulfide. The general treatment sequence for these conversion coatings is the same as described in Table 7.1 ; however, the type of conversion coating...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030165
EISBN: 978-1-62708-282-2
... further corrosion. Anodization of aluminum, one of the more commonly used conversion coating techniques, produces a protective aluminum oxide film on the aluminum metal. Another example of a chemical conversion coating is phosphatizing for the protection of automobile bodies. Metallic coatings create...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390100
EISBN: 978-1-62708-459-8
... lubricants (emulsions, synthetics, solutions); and a wide range of coatings and carriers. It also discusses solid-film lubricants (oxide films, polymer films, layer-lattice compounds) and environmental and safety concerns. aqueous lubricants coatings compounded lubricants greases metalworking...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870191
EISBN: 978-1-62708-299-0
..., and voltage/amperage control. Conversion Coatings Conversion coatings are adherent surface layers of low-solubility oxide, phosphate, or chromate compounds produced by the reaction of suitable reagents with the metallic surface. These coatings affect the appearance, electrochemical potential...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740325
EISBN: 978-1-62708-308-9
... and by the quantity, size, complexity, and surface finish of the parts to be coated. The equipment and methods of application used are similar to those used in painting. Phosphate Conversion Coatings Phosphate coating is the treatment of iron, steel, galvanized steel, or aluminum with a dilute solution...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040211
EISBN: 978-1-62708-300-3
... of steels. The success of the zinc phosphatizing treatment is influenced by the composition of the steel, especially the chromium content. Consequently, special procedures and other conversion coatings, such as oxalates, are preferred for austenitic stainless steels. Stearate-type soaps, which adhere...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390325
EISBN: 978-1-62708-459-8
..., extensive metal flow, and significant surface generation, and should ideally match the process of interest [ 63 ]. Bay, et al. [ 64 ] found in evaluations of MoS 2 and conversion coatings that the normal pressure and interface temperature have the most importance, while surface expansion, sliding distance...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390001
EISBN: 978-1-62708-459-8
... extrusion of cans originated in France around 1886, while the forward extrusion of tubes was patented by Hooker in the U.S. in 1909. The processes were limited to soft metals such as lead, tin, zinc, aluminum and copper until the adoption of the phosphate conversion coatings as a lubricant carrier...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870045
EISBN: 978-1-62708-299-0
... also influential. Two-coat polyurethane paint systems experienced far fewer incidences of filiform corrosion than did single-coat systems. Filiform corrosion rarely occurred when bare aluminum was anodized using chromic acid or primed with chromate or chromate-phosphate conversion coatings. Because...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350231
EISBN: 978-1-62708-315-7
... that is strongly oxidizing for the metal. phosphating. Forming an adherent phosphate coating on a metal by im- mersion in a suitable aqueous phosphate solution. Also called phos- phatizing. See also conversion coating. physical vapor deposition (PVD). A coating process whereby the dep- osition species...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.9781627083157
EISBN: 978-1-62708-315-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430343
EISBN: 978-1-62708-253-2
... precipitate at high temperatures, forming a coating, popularly termed a scale , on the ID side of the boiler tubes. Sources of impurities include condenser cooling water, process condensate, pretreatment or make-up water, chemical feed impurities, and leakages from utility equipment such as pump seals...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030169
EISBN: 978-1-62708-282-2
... a complex surface conversion coating approximately 20 nm thick on aluminum sheet and extrusions before painting in a factory operation, compared to 5 nm for an untreated surface. The proprietary solutions are acidic and contain chromates, phosphates, and other chemicals. Such films greatly improve paint...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120085
EISBN: 978-1-62708-269-3
... of titanium and potassium fluorides and phosphates. Several bath coating solutions are listed in Table 11.6 . Conversion coating baths for titanium alloys Table 11.6 Conversion coating baths for titanium alloys Bath No. Bath solution Composition Amount Temperature pH Immersion time, min...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350001
EISBN: 978-1-62708-315-7
... Improved fatigue strength due to compressive stresses induced on the exposed surface, also relieves tensile stresses that contribute to stress-corrosion cracking Changing the surface chemistry Phosphate chemical conversion coatings Used primarily on steels for enhanced corrosion resistance...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430379
EISBN: 978-1-62708-253-2
..., chlorination, ion exchange, demineralization, reverse osmosis, caustic and chelant treatment, oxygen scavenging, and colloidal, carbonate, phosphate, and sodium aluminate conditioning. boiler tubes carryover corrosion scaling water chemistry internal water treatment external water treatment...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390241
EISBN: 978-1-62708-459-8
... a conversion coating; in this case, the soap must be allowed to dry. These techniques are customarily described as dry drawing (see below). It is important to recognize that dry drawing does not involve unlubricated interfaces. Tribological and cooling ability drive lubricant selection, often resulting...