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硼酸对无铬无取向硅钢涂层性能的影响

【作者】 弋慧丽; 顾宝珊; 杨培燕; 宫丽; 郭大伟;

【Author】 Yi Huili1,2,Gu Baoshan1,2,Yang Peiyan1,2,Gong Li1,2,Guo Dawei1,2(1.China Iron and Steel Research Institute Group,Beijing 100081,China; 2.National Engineering Laboratory for Advanced Coatings Technology of Metal Material,Beijing 100081,China)

【机构】 中国钢研科技集团有限公司; 先进金属材料涂镀国家工程实验室;

【摘要】 研究了硼酸对以Al(H2PO4)3为基料的无铬无取向硅钢绝缘涂层各项性能的影响。用盐雾实验、动电位极化及交流阻抗等试验手段研究了不同硼酸含量对硅钢绝缘涂层的耐蚀性和电化学行为的影响,同时采用SEM对涂层的表面形貌进行了研究。结果表明,硼酸含量为9.7%时,涂层的耐盐雾性及电化学性能最好;硼酸含量过少或过多时,涂层的耐蚀性和电化学性能都较差。 

【Abstract】 Influence of boric acid on the performance of chromium-free non-oriented silicon steel insulating coating based on aluminum dihydrogen phosphate was investigated.Salt spray experiment,potentiodynamic polarization and electrochemical impedance spectroscopy were used to study the influence of boric acid content on the corrosion resistance and electrochemical behavior of the insulation coating of silicon steel.Surface morphologies of the coatings were tested by SEM.Result shows that when the boric ... 

【关键词】 硅钢; 无铬涂料; 硼酸; 磷酸盐;
【Key words】 silicon steel; chromium-free coating; boric acid; phosphate;

原文发表于《金属热处理》2013年第05期

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