会议论文详细信息
23rd International Conference on Vacuum Technique and Technology | |
Phase composition and residual stresses in thermal barrier coatings | |
Lozovan, A.A.^1 ; Betsofen, S.Ya.^1 ; Ashmarin, A.A.^2 ; Ryabenko, B.V.^3 ; Ivanova, S.V.^4 | |
Moscow Aviation Institute, National Research University, Ul. Orshanskaya 3, Moscow | |
121552, Russia^1 | |
Institute of Metallurgy and Materials N. A. A A Baykova, Russian Academy of Sciences, Leninsky pr. 49, Moscow | |
119991, Russia^2 | |
FGUP NPTsG Salyut, Moscow | |
105118, Russia^3 | |
National Research Nuclear University, MEPhi (Moscow Engineering Physics Institute), Moscow | |
115409, Russia^4 | |
关键词: APS coating; Ceramic layer; Gradual transition; Residual stresses distributions; Tetragonal lattices; Transition zones; Underlayers; X-ray studies; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/729/1/012017/pdf DOI : 10.1088/1742-6596/729/1/012017 |
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来源: IOP | |
【 摘 要 】
X-ray study of the phase composition and residual stresses distribution in two-layer APS coatings showed that the ceramic layer consists of t-ZrO2phase with tetragonal lattice and the metal underlayer γ-solid solution based on nickel. In the transition zone thickness of ∼ 100 pm as the distance from the surface was revealed a gradual transition from t-ZrO2to γ-solid solution. Increase in the specific volume of the metal underlayer resulting TGO growing leads to the formation of this layer high compressive stresses up to 600 MPa. In this case, the ceramic layer contains tensile stress up to 200 MPa.
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