期刊
SURFACE & COATINGS TECHNOLOGY
卷 374, 期 -, 页码 1015-1023出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2019.06.079
关键词
Al alloys; Zinc oxide; Plasma electrolytic oxidation; Corrosion resistance
资金
- Soft Science Research Project of Guangdong Province [2017B030301013]
- New Energy Materials Genome Preparation & Test Key -Laboratory Project ofShenzhen [ZDSYS201707281026184]
- Shenzhen Science and Technology Research Grants [JCYJ20170306165240649, JCYJ20170818150601930]
- Hong Kong Innovation and Technology Fund (ITF) [ITS/452/17FP (CityU 9440179)]
Aluminum alloys are widely used in the aerospace and transportation industries, but the corrosion resistance is insufficient in long-term service especially in the high salinity environment. A ceramic coating composed of ZnO nanoparticles is demonstrated to significantly improve the corrosion resistance of the Al alloys. Owing to the similar chemical activity of Zn and Al, ZnO particles fuse into Al2O3 in the micro-arc during plasma electrolytic oxidation (PEO) rendering the coating compactness. The formation mechanism of the PEO coating is investigated and discussed. The corrosion current of the ZnO modified PEO coating is 4 orders of magnitude less than that of the LY12 substrate. Immersion tests performed in 3.5 wt% sodium chloride show that incorporation of ZnO prevents destruction and dissolution of the PEO coating in the high salinity environment.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据