Alkaline resistant manganese-nickel-zinc phosphate conversion coatings and method of application
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United States of America Patent
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Jun 24, 1986
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N/A
app pub date -
Jul 1, 1985
filing date -
Jul 1, 1985
priority date (Note) -
Expired
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Abstract
A zinc phosphate coating bath and its application to metal is disclosed characterized in that the bath contains 80 to 94, preferably 84 to 94, mole percent nickel cations, 0.5 to 10 mole percent manganese cations and 5.5 to 19.5 mole percent zinc cations together with solubilizing amounts of phosphate ions or phosphate ions in combination with ions of acids other than phosphoric acid.
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