文献类型：期刊文献

中文题名：纳米CeO2改性有机硅烷转化膜的耐蚀性

英文题名：Corrosion Resistance of Organic Silane Conversion Films Modified by Nano-CeO2

作者：娄淑芳[1];张亚昆[2];李红玲[2]

第一作者：娄淑芳

机构：[1]商丘医学高等专科学校公共学科部,河南商丘476002;[2]新乡学院化学化工学院,河南新乡453000

第一机构：商丘医学高等专科学校公共学科部,河南商丘476002

年份：2019

卷号：0

期号：9

起止页码：132-136

中文期刊名：材料保护

外文期刊名：Materials Protection

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD_E2019_2020】；

基金：河南省科技发展计划项目(1521023102122);新乡学院科技创新基金(15ZC16)资助

语种：中文

中文关键词：铝合金;硅烷;纳米CeO2;耐蚀性

外文关键词：aluminum alloys;silane;nano-CeO2;corrosion resistance

摘要：为了提高铝合金表面有机硅烷转化膜的耐蚀性,采用浸渍涂层法在铝合金表面制备了纳米CeO2改性有机硅烷(KH-560)转化膜,采用极化曲线和交流阻抗谱分别考察了纳米粒子添加量和硅烷浓度对转化膜耐蚀性能的影响。电化学测试表明,经5%硅烷溶液KH-560改性预处理后,铝合金显示出良好的耐蚀性能,其中,KH-560经0.015%的CeO2改性后,膜层的阻抗值较高;SEM形貌显示,膜层更均匀致密,膜层的耐蚀性能得到很大的改善。这是由于添加的纳米粒子作为腐蚀抑制剂,渗透到硅烷基质中,起到了积极的耐蚀防护作用。
Nano-CeO2 modified organic silane(KH-560)conversion coatings were prepared on aluminum alloy surface by impregnation coating method.The effects of nano-CeO2 content and silane concentration on the corrosion resistance of the conversion coatings were investigated by polarization curves and AC impedance spectroscopy,respectively.Results showed that the aluminum alloy showed good corrosion resistance after pretreatment with 5%silane solution KH-560.Among them,KH-560 modified by 0.015%CeO2 had higher impedance value.SEM showed that the film was more uniform and compact,and the corrosion resistance of the film was greatly improved.This was due to the added nanoparticles acted as corrosion inhibitors,which infiltrated into the silane and played a positive effect on corrosion resistance and protection performance.