探究不同存储条件下金属镀层表面三价铬六价铬之间的转化  

Research on conversion between Trivalent chromium and hexavalent chromium of metallic coating surface under different storage conditions

作　　者：彭丹丹 龚俊川 严思佳 Peng Dandan;Gong Junchuan;Yan Sijia(Zhejiang GEELY Automobile Research Institute Co.,Ltd.,Zhejiang Ningbo 315336)

机构地区：[1]吉利汽车研究院(宁波)有限公司,浙江宁波315336

出　　处：《汽车实用技术》2018年第17期296-298,共3页Automobile Applied Technology

摘　　要：金属表面镀锌层经过三价铬彩色钝化处理后在空气中放置一段时间会出现微量六价铬。文章探讨了不同存储条件(温度、湿度、时间)和工艺流程中加封闭剂对金属表面钝化层在存储期间产生六价铬含量的影响。从而降低因存储条件等因素而出现六价铬含量超过法规的风险。After exposed in air for a period of time,a small amount of hexavalent chromium will appear in surface galvanized layer which had been treated with trivalent chromium color passivation.In this paper,effects of sealing agent with different storage conditions(temperature,humidity,time)and process flow on the production of hexavalent chromium in metal surface passivation layer has been discussed.It will reduce the risk that hexavalent chromium content exceeds the regulation due to storage conditions and other factors.

关 键 词：三价铬彩色钝化 六价铬 存储条件 

分 类 号：U466[机械工程—车辆工程]