A review is made of some of the existing methodologies for assessing phosphate characteristics on automotive sheet steels. Data obtained from on-line processing of zinc and zinc-iron substrates are presented comparing phosphate attributes to performance in the Chipping Corrosion Test. Phosphate characteristics measured were: crystal size; nickel content; coating weight; porosity; alkali solubility. A definitive relationship between these characteristics and chipping corrosion performance was not found.
Methods of Characterizing Phosphate Coatings on Automotive Sheet Steels
Sae Technical Papers
1986 SAE Automotive Corrosion and Prevention Conference and Exposition ; 1986
08.12.1986
Aufsatz (Konferenz)
Englisch
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