首页|Mechanical properties and simulated thermal conductivity of biomimetic structured PS-PVD(Gd0.9Yb0.1)2Zr2O7 thermal barrier coatings

Mechanical properties and simulated thermal conductivity of biomimetic structured PS-PVD(Gd0.9Yb0.1)2Zr2O7 thermal barrier coatings

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Plasma spray physical vapor deposition(PS-PVD)(Gd0.9Yb0.1)2Zr2O7(GYbZ)thermal barrier coatings(TBCs)exhibited better silicate-phobicity than coatings produced by electron beam physical vapor depo-sition.In combination with PS-PVD and ultrafast laser direct writing technology,biomimetic structured GYbZ TBCs,with a triple-scale micro/nano surface microstructure,were obtained.Laser ablating on the PS-PVD GYbZ coatingenhanced the surface roughness,improving its wear resistance without increasing the surface hardness.Furthermore,during the laser ablation processing,numerous nanoparticles were deposited in-situ in the gaps between columns of the coating,reducing the coating Young's modulus.The simulated temperature field and heat flux field demonstrated that the presence of numerous interfaces between small columns of the PS-PVD coatings is beneficial to thermal insulation.However,laser ablation decreased the coating thickness,reducing the thermal insulation by around 20％-30％as compared to its PS-PVD counterpart,suggesting that a moderate increase in the coating thickness should be considered when designing an efficient TBC system.

Thermal barrier coatings(TBCs)Plasma spray physical vapor deposition(PS-PVD)Laser ablationBiomimetic structureMechanical propertiesThermal insulation

Yiqian Guo、Lei Guo、Keyi Liu、Shiyi Qiu、Hongbo Guo、Huibin Xu

展开 >

School of Materials Science and Engineering,Beihang University,Beijing 100191,China

School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China

Chinese Aeronautical Establishment,Beijing 100012,China

Tianmushan Laboratory,Yuhang District,Hangzhou 311115,China

Research Institute for Frontier Science,Beihang University,Beijing 100191,China

展开 >

Nature Science Foundations of China(NSFC)Nature Science Foundations of China(NSFC)

U21B205252102057

2024

10.1016/j.jmst.2023.09.034

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.182(15)
  • 41