because of environmental requirements for copper chromate treatment gradually been abolished, research new, effective copper and its alloys passivation treatment technology will be imperative. A lot of literature shows that many people before the passivation of copper and its alloys environmental protection has done a lot of research. This process is mainly benzotriazole (BTA), polyvinyl alcohol (PVA) as the main component of the compound inhibitor of the corrosion inhibitor composition of the BTA, polyvinyl alcohol (PVA), nitrobenzene sulfonate trisodium phosphate and urea. Study found that polyvinyl alcohol (PVA), nitrobenzene sulfonate, an increase of the effectiveness of BTA passiva-tion but several substances corrosion and synergies, and a trial basis, and have given it a reasonable explanation.% 针对于铜的铬酸盐处理方法因环保要求而逐步的被废除，研究新型的、有效的铜及其合金表面钝化处理技术将势在必行。诸多文献资料显示，许多前人对铜及其合金环保钝化也做过很多研究。本工艺主要研究以苯并三氮唑(BTA)、聚乙烯醇(PVA)为主要成分的复合缓蚀剂该缓蚀剂成分有BTA、聚乙烯醇(PVA)、硝基苯磺酸钠、磷酸三钠和尿素。通过研究发现，聚乙烯醇(PVA)、硝基苯磺酸钠等增加了BTA钝化处理的功效而是几种物质存在着缓蚀协同效应，并以试验为依据，对此给予了合理的解释。
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