文献类型：期刊文献

英文题名：Superior thermomechanical performance and architectural reinforcement mechanisms in additively manufactured biomimetic structured thermal barrier coatings

作者：Zhao, Zheng[1];Shi, Junmiao[1];Xu, Wenhu[1];Shi, Jiayang[1];Chen, Xiaolong[2];Wang, Run-Zi[3,4];Tian, Fuqiang[1];Fang, Yu[5];Zhang, Xian-Cheng[1];Tu, Shan-Tung[1]

机构：[1]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]Jinan Univ, Inst Adv Wear & Corros Resistant & Funct Mat, Guangzhou 510632, Peoples R China;[3]Tohoku Univ, Adv Inst Mat Res WPI AIMR, Core Res Cluster Mat Sci CRCMS, Sendai 9808577, Japan;[4]Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Sendai 9808579, Japan;[5]Dongfang Turbine Co Ltd, Deyang 618000, Peoples R China

年份：2026

卷号：46

期号：16

外文期刊名：JOURNAL OF THE EUROPEAN CERAMIC SOCIETY

收录：;EI(收录号：20262921125623);Scopus(收录号：2-s2.0-105045101690);WOS:【SCI-EXPANDED(收录号:WOS:001827627300001)】；

基金：This work was supported by the National Natural Science Foundation of China (52375146) .

语种：英文

外文关键词：Thermal barrier coatings; Thermomechanical durability; Biomimetic structure; Toughening mechanism; Selective laser melting

摘要：To enhance thermal barrier coatings (TBCs) adhesion and durability, biomimetic rare-earth (Gd, Yb) doped YSZ (RYSZ) coatings with 3D architected interfaces inspired by bivalve beetles were fabricated via selective laser melting. These mechanical interlocking geometries optimize stress distribution and activate extrinsic toughening mechanisms. Results demonstrate that boss-structured interfaces yield a 274.7% increase (37.92 +/- 2.05 MPa) in bond strength than porous coatings (10.12 +/- 0.83 MPa) and achieved 30 thermal shock cycles. Stress simulations reveal that S11 concentrations at structural apices induce vertical stress-relief cracking, while S22 and S12 along sidewalls govern horizontal crack coalescence and delamination. Furthermore, sintering-induced increases in elastic modulus and thermal conductivity, combined with TGO thermal mismatch stress, accelerate coating spallation. The synergistic interplay between the architected topology and TGO evolution constitutes the fundamental mechanism governing the superior thermomechanical durability. This work demonstrates a promising route towards next-generation ceramic coatings with high integrity through bio-inspired microstructural engineering to achieve excellent coating integrity.