Investigation of the Thermo Barrier Coatings of the Y–Al–O System Using Synchrotron Radiation

A. Yu. Nazarov; Назаров А. Ю.; E. L. Vardanyan; Варданян Э. Л.; A. A. Maslov; Маслов А. А.; A. A. Nikolaev; Николаев А. А.; K. N. Ramazanov; Рамазанов К. Н.; A. M. Khusainova; Хусаинова А. М.; A. N. Shmakov; Шмаков А. Н.

doi:10.31857/S1028096023040155

Investigation of the Thermo Barrier Coatings of the Y–Al–O System Using Synchrotron Radiation

Authors: Nazarov A.Y.¹, Vardanyan E.L.¹, Maslov A.A.¹, Nikolaev A.A.¹, Ramazanov K.N.¹, Khusainova A.M.¹, Shmakov A.N.²
Affiliations:
1. Ufa State Aviation Technical University
2. Budker Institute of Nuclear Physics of Siberian Branch RAS
Issue: No 4 (2023)
Pages: 25-29
Section: Articles
URL: https://rjpbr.com/1028-0960/article/view/664574
DOI: https://doi.org/10.31857/S1028096023040155
EDN: https://elibrary.ru/JRUDAN
ID: 664574

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Abstract
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Abstract

Y–Al–O thermal barrier coating was investigated using synchrotron radiation. Y–Al–O coating was deposited on molybdenum substrate using cathodic-arc deposition with two elemental cathodes made from aluminum and yttrium respectively. Phase evolution was investigated during samples heating up to 1500°C in vacuum. It was found that as-deposited coating has amorphous structure and crystallization process take place at 1160–1170°C, no another phase transformations was observed. Qualitative phase composition of coating as well as microstresses in film were determined. The results of evaluation demonstrates lack of microstresses in obtained coating. Obtained results demonstrates a possibility of Y–Al–O coating deposition by cathodic arc deposition Arc-PVD technology, and deposited coating consist of YAlO₃ (predominantly), Y₂O₃ oxides and YAl₂ intermetallic.

Keywords

plasma treatment, vacuum arc deposition, thermal barrier coating, synchrotron radiation, X-ray diffraction analysis, microstress.

References

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