US 12,146,063 B2
Thermal barrier coating and preparation method thereof
Xiancheng Zhang, Shanghai (CN); Xiaofeng Zhao, Shanghai (CN); Yali Yu, Shanghai (CN); Shantung Tu, Shanghai (CN); Dingwu Zhang, Shanghai (CN); Xiaobo Wang, Shanghai (CN); Junmiao Shi, Shanghai (CN); and Weize Wang, Shanghai (CN)
Assigned to EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY, Shanghai (CN); SHANGHAI JIAO TONG UNIVERSITY, Shanghai (CN); and CHINA UNITED GAS TURBINE TECHNOLOGY CO., LTD, Shanghai (CN)
Appl. No. 18/286,457
Filed by EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY, Shanghai (CN); SHANGHAI JIAO TONG UNIVERSITY, Shanghai (CN); and CHINA UNITED GAS TURBINE TECHNOLOGY CO., LTD., Shanghai (CN)
PCT Filed Mar. 31, 2023, PCT No. PCT/CN2023/085478
§ 371(c)(1), (2) Date Oct. 11, 2023,
PCT Pub. No. WO2023/186094, PCT Pub. Date Oct. 5, 2023.
Claims priority of application No. 202210349568.9 (CN), filed on Apr. 2, 2022.
Prior Publication US 2024/0191082 A1, Jun. 13, 2024
Int. Cl. C09D 1/00 (2006.01); C23C 4/02 (2006.01); C23C 4/06 (2016.01); C23C 4/11 (2016.01); C23C 4/134 (2016.01)
CPC C09D 1/00 (2013.01) [C23C 4/02 (2013.01); C23C 4/06 (2013.01); C23C 4/11 (2016.01); C23C 4/134 (2016.01)] 9 Claims
OG exemplary drawing
 
1. A thermal barrier coating, comprising an intermediate layer attached to a surface of a metal bonding layer, and a top layer, wherein
the intermediate layer is formed by atmospheric plasma spraying YSZ porous microspheres, and the top layer is formed by atmospheric plasma spraying Yb—Gd codoped YSZ porous microspheres; and
the intermediate layer is in contact with the surface of the metal bonding layer, and the top layer is directly exposed to a high-temperature gas environment;
the YSZ porous microspheres and the Yb—Gd codoped YSZ porous microspheres each independently have a spherical diameter of 50-100 μm;
the YSZ porous microspheres and the Yb—Gd codoped YSZ porous microspheres each have a hierarchical porous structure, with a spongy circular pore in a size of 0.1-10 μm at a center of microspheres, the spongy circular pore gradually transitioning towards a surface of the microspheres to a radiating dactylopore in a size of 10-40 μm; and
the YSZ porous microspheres have a porosity of 40-60%, and the Yb—Gd codoped YSZ porous microspheres have a porosity of 40-60%.