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在三价镀铬溶液中添加次磷酸钠，制得了Ｃｒ－Ｐ合金镀层。研究了电沉积条件对镀层成份的影响和镀层在１ｍｏｌ／Ｌ盐酸和０．５ｍｏｌ／Ｌ硫酸中的电化学行为。磷含量大于５ｗｔ％时，合金镀层具有极好的耐蚀性。
The trivalent chromium plating solution was added sodium hypophosphite, prepared Cr-P alloy coating. The effects of electrodeposition conditions on the coating composition and the electrochemical behavior of the coating in 1 mol / L hydrochloric acid and 0.5 mol / L sulfuric acid were investigated. Phosphorus content of more than 5wt%, the alloy coating has excellent corrosion resistance.