Construction and corrosion behavior of Al2O3/Al2O3-Ca2SiO4 double ceramic coating

被引：3
|
作者：
Chen, Wei [1 ,2 ]
Zhuang, Yin [2 ]
Sheng, Jing [2 ]
Ni, Jinxing [2 ]
Yang, Jiasheng [2 ]
Zhao, Huayu [2 ]
Qian, Haiyan [1 ]
Tao, Shunyan [2 ]
Shao, Fang [2 ]
机构：
[1] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 211816, Peoples R China
[2] Chinese Acad Sci, Key Lab Inorgan Coating Mat CAS, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2024年 / 50卷 / 02期
基金：
上海市自然科学基金;
关键词：
Alumina coating; Alumina/alumina-dicalcium silicate coating; Sealing; Corrosion resistance; Potentiodynamic polarization; Thermal shock resistance; METALLIC BONDING LAYER; SEALING TREATMENT; RESISTANCE; SEALANT;
D O I：
10.1016/j.ceramint.2023.11.090
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, Al2O3/Al2O3-Ca2SiO4 powders was sprayed on stainless steel substrate which contains a nickel-chromium connecting layer. At the same time, Al2O3 coatings were produced by air-plasma-spraying technology as comparison. Anti-corrosion tests in acidic corrosive atmosphere, potentiodynamic polarization measurements and thermal shock resistance tests were carried out to evaluate the protection performance of coatings. The effects of inorganic sealing agent on the microstructure and properties of the coatings were studied. The results indicated that Al2O3/Al2O3-Ca2SiO4 double ceramic coating showed a better corrosion resistance, lower corrosion rate and a better thermal shock resistance than Al2O3 coating. The sealing treatment can improve the corrosion resistance of coatings while decreasing the thermal shock resistance dramatically.
引用
收藏
页码：3429 / 3442
页数：14
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