六价铬钝化工艺,毒性大,严重污染环境,电镀行业研究并采用无毒或低毒的钝化工艺势在必行.目前无铬钝化和三价铬钝化已取得积极的进展,三价铬钝化已应用于生产,并获得良好的效果.无铬钝化作为环保工艺,是将来钝化工艺发展的新方向.结合近年来无铬钝化和三价铬钝化的发展,对无铬钝化、三价铬钝化及封闭处理等进行了较详细的阐述.
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