溶胶-凝胶涂层在镁合金腐蚀防护应用中的研究进展

材料保护, 2016, 49(5): 41-47.

溶胶-凝胶涂层在镁合金腐蚀防护应用中的研究进展

谢丽云 ^1, , 曹献龙 ^2, , 施国霖 ^3, , 高正源 ^4, , 邓洪达 ^5, , 兰伟 ^6,

1.重庆科技学院冶金与材料工程学院,重庆,401331

2.重庆科技学院冶金与材料工程学院,重庆,401331

3.重庆科技学院冶金与材料工程学院,重庆,401331

4.重庆市计量质量检测研究院/国家铝镁合金及制品质量监督检测中心,重庆 401121;重庆交通大学机电与车辆工程学院,重庆 400074

5.重庆科技学院冶金与材料工程学院,重庆,401331

6.重庆科技学院冶金与材料工程学院,重庆,401331

基金项目: 重庆市基础与前沿研究计划项目(cstc2015jcyjA50003) 重庆市南川区科技计划项目(CX201407) 重庆科技学院重点项目培育基金(CK2014Z22) 重庆市教委科学技术研究项目(KJ1401314、KJ1401310) 重庆科技学院院士专家工作站合作项目(CKYS2014Z03) 重庆科技学院第八届大学生科技创新训练计划项目(No.35)资助

关键词：镁合金 , 腐蚀与防护 , 溶胶-凝胶杂化涂层 , 缓蚀剂 , 电化学氧化 , 化学转化

镁合金是21世纪最富开发和应用潜力的优异绿色工程材料之一,但耐蚀性差成为制约其广泛应用的瓶颈.选择和开发合适的表面防护涂层可以有效提高镁合金表面的耐蚀性能.溶胶-凝胶涂层技术凭借其工艺简单、膜层成分结构可控、耐蚀性能优良等优点近年来在镁合金表面的腐蚀防护应用中得到重视.将用溶胶-凝胶技术在镁合金表面制备防腐蚀涂层的研究成果按照有机/无机杂化涂层、缓蚀因子/杂化涂层、电化学氧化/杂化涂层、化学转化/杂化涂层的分类方法进行了分析总结.这些涂层体系各具特色,其中含缓蚀因子的杂化涂层具备自修复能力,化学转化和电化学氧化杂化涂层的附着力突出,而单一涂层更容易破坏.在未来,镁合金表面溶胶-凝胶防护涂层的研究工作仍以有效结合现有的表面处理技术开发长效高耐蚀复合涂层为重心.

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溶胶-凝胶涂层在镁合金腐蚀防护应用中的研究进展

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