Porous nanostructured ZrO2 coatings prepared by plasma spraying

被引：21

作者：

Cui, Yu-hang ^{[1
]}

Hu, Zhong-chao ^{[1
]}

Ma, Yu-duo ^{[1
]}

Yang, Yong ^{[1
]}

Zhao, Ce-ce ^{[1
]}

Ran, Yu-tong ^{[1
]}

Gao, Peng-yue ^{[1
]}

Wang, Lei ^{[1
]}

Dong, Yan-chun ^{[1
]}

Yan, Dian-ran ^{[1
]}

机构：

[1] Hebei Univ Technol, Tianjin Key Lab Mat Laminating Fabricat & Interfa, State Key Lab Reliabil & Intelligence Elect Equip, Sch Mat Sci & Engn,Key Lab New Type Funct Mat Heb, Tianjin 300132, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2019年 / 363卷

基金：

中国国家自然科学基金;

关键词：

ZrO2; coatings; Porous coatings; Plasma spraying; Pore-forming agents; Porosity; THERMAL-CONDUCTIVITY; MECHANICAL-PROPERTIES; MICROSTRUCTURE; POROSITY;

D O I：

10.1016/j.surfcoat.2019.02.059

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Porous nanostructured ZrO2 coatings were prepared on the surface of TC4 titanium alloy by plasma spraying. The porosity of the coatings was improved by adding MDPE and PEEK as pore-forming agents in the ZrO2 powder. The results indicate that the addition of pore-forming agents significantly increased the porosity of the ZrO2 coatings, and the porosity of the ZrO2 coatings increased with increasing the content of the pore-forming agents. PEEK pore-forming agent was superior to MDPE concerning the pore-forming ability in the present preparation condition. The porosity of the ZrO2 coatings was further increased by subsequent heat treatment. The porosity of ZrO2-15% PEEK coating after heat treatment reached 20.6%. The microhardness of the porous nanostructured ZrO2 coatings were about HV(0.1)1000, which decreased little with the increase of the porosity of the coatings.

引用

页码：112 / 119

页数：8

共 20 条

[1] A novel low-thermal-conductivity plasma-sprayed thermal barrier coating controlled by large pores [J].