摘要
采用硫酸铜点滴、线性极化、交流阻抗等试验对比研究了经硅烷偶联剂(SCA)和铬酸盐表面处理后冷轧板的耐蚀性能。结果表明,经硅烷偶联剂表面处理后不但提高了基材的防腐蚀性能,并且还提高了基材与涂层的结合力,明显增强了钢材的耐蚀性。SCA处理能够起到和铬酸盐钝化相同的防护效果,有望取代造成环境污染的铬酸盐钝化工艺。
The corrosion-resistance of cold-rolled steel sheet treated with silane coupling agent(SCA)and chromate passivation was evaluated using CuSO4 dropping test,linear polarization test,and electrochemical impedance spectroscopy(EIS).It was found that the steel sheet after surface modification with SCA had improved corrosion resistance,and the modifying coating had strong adhesion to the steel substrate.Moreover,the steel sheet modified by SCA had corrosion protection performance comparable to that of chromate passivation coating.Thus it could be feasible to use SCA modification to replace conventional chromate passivation process so as to avoid environmental pollution by Cr.
出处
《材料保护》
CAS
CSCD
北大核心
2008年第4期24-26,2,共3页
Materials Protection
关键词
硅烷偶联剂(SCA)
铬酸盐
表面处理
冷轧钢板
耐蚀性
silane coupling agent(SCA)
chromate passivation
surface treatment
cold-rolled steel sheet
corrosion resistance
