High Temperature Oxidation and Electrochemical Corrosion Behavior of Al Nano-particle Modified Silicone Coating on 304 Stainless Steel

被引：0

作者：

Du Y. ^{[1
,2
]}

Wang C. ^{[1
]}

Zhu S. ^{[1
,3
]}

Wang F. ^{[3
,4
]}

机构：

[1] Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang

[2] School of Materials Science and Engineering, University of Science and Technology of China, Shenyang

[3] Shenyang National Laboratory for Materials Science, Shenyang

[4] School of Materials Science and Engineering, Northeastern University, Shenyang

来源：

Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2019年 / 33卷 / 12期

关键词：

304 stainless steel; Anti-high temperature oxidation; Failure and protection of materials; Nano-modification; Normal temperature curing; Organosilion;

D O I：

10.11901/1005.3093.2019.159

中图分类号：

学科分类号：

摘要：

Al nano-particle modified organosilicone coatings were prepared on stainless steel 304SS. The curing properties at room temperatures, high temperature oxidation behavior at 650ºC in air and electrochemical corrosion behavior in 3.5% NaCl solution of the coatings were investigated. The silicone coatings can be cured at room temperatures in 24 h only when the mass ratio of polyurethane over silicone is equal to or higher than 1:3. The as-prepared silicone coatings were smooth and free of cracks. The high temperature oxidation resistance of 304SS was greatly improved by applying the modified silicone coating. After oxidized for 1028 h at 650ºC in air, the oxide scale on the coated 304SS was hardly discernable, while the coatings remained intact and free of cracks. Besides, after high temperature oxidation, the electrochemical corrosion resistance of the 304SS coated with modified silicone coating in NaCl solution was greatly improved, too. Without the protection of the coating, the impedance at low frequency of oxidized 304SS without coating was as low as 3.2 Ω•cm2, while that of the sample with coating was as high as 1.1×105 Ω•cm2. © All right reserved.

引用

页码：942 / 948

页数：6

共 35 条

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