Manganate and organic compound are,as composite passivation film,simultaneously acted on chromium-free passivation of galvanized sheet,then giving the optimal formula.

• 研究了锰酸盐与有机物复合作用用于镀锌板无铬钝化的最佳配方,应用极化曲线和交流阻抗的方法测试了镀锌层锰酸盐有机复合钝化膜在0。