采用盐水浸泡试验,电化学测试和盐雾试验研究了碱性锌酸盐体系中获得的高择优取向镀锌层和随机取向镀锌层的耐蚀性能,对比了不同取向镀锌层三价铬和六价铬钝化膜的耐蚀性;采用盐雾试验对比了两种取向镀锌层和氰化镀锌层的耐蚀性.结果表明,高择优取向镀锌层的耐蚀性优于随机取向镀锌层;两种取向的镀锌层经三价铬钝化比六价铬钝化耐蚀性要好;经三价铬钝化处理后的高择优取向镀锌层耐盐雾时间可达720 h.
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