The stress distribution and failure behavior of non-uniformed TGO based on oxygen concentration: A novel geometric description of TGO by the parameterized arc

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-02-01 DOI:10.1016/j.surfcoat.2024.131705

Shutao Chen , Chuntang Yu , Lei Zhang , Xiaoyun Li , Min Feng , Chengyang Jiang , Shuai Li , Zebin Bao , Guozheng Quan , Shenglong Zhu , Fuhui Wang

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引用次数: 0

Abstract

TBCs are primarily applied to aero-engine blades to improve the thermal insulation performance and extend the service life of the gas turbine. While the understanding of the effect of non-uniform growth of TGO on the stress distribution and structural stability of TBCs is still limited. Therefore, this study is devoted to exploring the influence of non-uniform TGO on the stress distribution of TBCs. A roughness characterization method of parametric arc radian is proposed, and the TGO growth control equation based on the oxygen diffusion distribution is established in this paper. The results indicated that as the radius (R) or radian (ω) of the models increases, the difference in TGO thickening becomes more significant, with the peak oxygen concentration in TGO increasing and the valley oxygen concentration decreasing. Furthermore, the radius (R) and radian (ω) of the TGO morphology also exert noticeable effects on the magnitude and distribution of stress.

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.