摘要:
A chromate composition and process provide improved corrosion resistance and paint adhesion for zinc surfaces. The aqueous acidic composition contains hexavalent and trivalent chromium phosphate and fluorozirconate at prescribed concentrations. The composition is applied and dried without rinsing to yield a chromium coating weight of 10-200 mg/m.sup.2.
摘要翻译:铬酸盐组合物和工艺为锌表面提供了改善的耐腐蚀性和涂料附着力。 水性酸性组合物含有规定浓度的六价和三价铬磷酸盐和氟锆酸盐。 在不冲洗的情况下施用和干燥组合物,得到10-200mg / m 2的铬涂层重量。
摘要:
A treating composition for metallic surfaces is characterized by containing hexavalent chromium ions or hexavalent and trivalent chromium ions as inorganic compound, and acrylic-series polymer emulsion obtained by emulsion-polymerizing, by means of a nonionic emulsifying agent which is essentially free of anionic emulsifying agent and cationic emulsifying agent and which contains a polyoxyethylene-polyoxypropylene block polymer, and having a pH of 5 or less.
摘要:
A thin sulfurizing layer having high iron-sulfide content is formed by an electrolytic deposition method using an alkaline electrolytic solution which contains ferric ions, sulfide and a chelating agent of the ferric ions.