A method of providing a decorative exposed metallic surface with protection from marring, marking and staining, comprising the steps of coating the surface with an aqueous solution which contains ions of magnesium, ammonium, chromate and phosphate and curing said coating.
申请公布号
DE2064770(C3)
申请公布日期
1981.06.04
申请号
DE19702064770
申请日期
1970.12.31
申请人
ALLEGHENY LUDLUM INDUSTRIES, INC., PITTSBURGH, PA., US