通过氟钛酸改性KH858+KH580混合硅烷,配制出无铬钝化液,将其涂覆在热镀锌板上,经烘干、固化,形成无铬钝化膜.测定了钝化膜的厚度、附着力和硬度;通过中性盐雾试验,研究了钝化膜的耐化学腐蚀性能；通过Tafel极化曲线和EIS图谱,表征了钝化膜的耐电化学腐蚀性能.结果表明:钝化膜的平均厚度为5.2μm,附着力测试的被剥离面积为3％,硬度为3H,均满足国家标准,符合工业生产要求；此外,钝化膜的耐化学腐蚀和耐电化学腐蚀性能优良,相比于改性前,其性能有较大提高.
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