吴小凤,姚正军,魏东博,张平则,罗西希,朱俊谋,冯立新,尹国贤

• 1:南京航空航天大学材料科学与技术学院
• 2:江苏麟龙新材料股份有限公司

摘要(Abstract)：

利用浸涂法在Q235钢表面制备无铬锌铝涂层,并在涂层中添加TiO2纳米颗粒制备TiO2纳米复合涂层。采用SEM、EDS等测试手段分析两种涂层的组织、形貌和成分,并通过快速硝酸铵腐蚀实验以及电化学实验研究涂层的耐蚀性能。结果表明:涂层呈层片状组织,纳米颗粒部分填充在金属粉的孔隙中。在20%的硝酸铵溶液中腐蚀4 h后,TiO2纳米复合涂层仍维持层片状结构,未出现明显的剥落现象,耐蚀性优于无铬锌铝涂层。在3.5%NaCl溶液中,TiO2纳米复合涂层的自腐蚀电流密度为2.476×10-6A/cm2,低于无铬锌铝涂层的5.015×10-5A/cm2,显著提升了涂层的耐蚀性。

关键词(KeyWords)： 无铬;TiO2;纳米复合涂层;耐蚀性

Abstract:

Keywords:

基金项目(Foundation): 江苏产学研联合创新资金-前瞻性联合研究项目(BY2012019);; 科技支撑计划-工业部分(BE2013124)

作者(Author): 吴小凤,姚正军,魏东博,张平则,罗西希,朱俊谋,冯立新,尹国贤

DOI: 10.13289/j.issn.1009-6264.2014.s1.039

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