摘要
对代替铬酸盐溶液的镀锌钛盐钝化技术进行了研究,并借助扫描电镜、电子能谱仪考察了钝化工艺对钝化膜色泽的影响情况。结果表明,在钛盐钝化液中,镀锌层表面可获得黄、蓝、金黄、紫、绿等色泽的钝化膜;钝化工艺参数(钝化时间、钝化温度、钝化液pH值、干澡温度等)对镀锌层钝化膜的色泽有很大影响;镀锌钛盐钝化膜的微观形貌、表面成分与不同钝化工艺条件下获得的钝化色泽具有一定的对应关系。初步探讨了镀锌层在钛盐钝化液中成膜产生色泽的原因。
The chromate-free passivation of electroplated zinc coatings in titanate solution was investigated.The passivation films formed on the zinc coatings were investigated by means of scanning electron microscopy(SEM)and energy dispersive spectrometry(EDS),while the possible causes leading to various colors of the passivation films in the titanate salt solution were discussed.The results showed that the passivation film on the electroplated Zn coating was mainly composed of Zn,O and Ti.It was feasible to prepare titanium-containing passivation films with various colors by adjusting the passivation parameters such as time,the temperature pH value of the passivation solution,and the temperature for drying.And the surface morphologies and elemental compositions of the passivation films were related to their colors.
出处
《材料保护》
CAS
CSCD
北大核心
2008年第5期45-48,共4页
Materials Protection
关键词
镀锌
钛盐溶液
钝化膜
色泽
微观形貌
表面成分
zinc plating,titanate solution
passivation film
color
morphology
surface composition
