TiO2对大气等离子喷涂Al2O3基涂层力学性能和热性能的影响

IF 2.2 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Asian Ceramic Societies Pub Date : 2023-04-03 DOI:10.1080/21870764.2023.2203991

H. Kwon, Y. Yoo, Youn-Min Park, U. Nam, E. Byon

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引用次数: 1

摘要

在本研究中，采用大气等离子喷涂技术制备了不同TiO2含量(0、3、13和40%)的al2o3基涂层。为了比较样品的优越性，对其力学性能(维氏硬度和粘接强度)和热性能(导热性和抗热震性)进行了表征。结果表明，在600℃时，Al2O3-40%TiO2 (A-40T)涂层的力学性能相对较差，但隔热性能和抗热震性能较好。根据显微组织和物相分析，这一发现是由于涂层内部存在特殊的Al2TiO5相和预先存在的微裂纹。因此，与纯Al2O3和低tio2含量的涂层相比，A-40T具有优异的保温性能。

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Effect of TiO2 on mechanical and thermal properties of Al2O3-based coating via atmospheric plasma spraying

ABSTRACT In this study, Al2O3-based coatings with varying TiO2 contents (0, 3, 13, and 40%) were fabricated using atmospheric plasma spraying technique. To compare the superiority of the samples, their mechanical (Vickers hardness and adhesion strength) and thermal properties (thermal conductivity and thermal shock resistance) were characterized. As observed, Al2O3-40%TiO2 (A-40T) coating exhibited relatively inferior mechanical properties but superior thermal insulation and thermal shock resistance at 600°C. According to the microstructure and phase analysis, this finding is attributed to the special phase, Al2TiO5, and preexisting microcracks inside the coating. Thus, A-40T manifested excellent characteristics for thermal insulation application compared with pure Al2O3 and low-TiO2 content coatings.

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来源期刊

Journal of Asian Ceramic Societies Materials Science-Ceramics and Composites

CiteScore

5.00

自引率

4.30%

发文量

审稿时长

10 weeks

期刊介绍： The Journal of Asian Ceramic Societies is an open access journal publishing papers documenting original research and reviews covering all aspects of science and technology of Ceramics, Glasses, Composites, and related materials. These papers include experimental and theoretical aspects emphasizing basic science, processing, microstructure, characteristics, and functionality of ceramic materials. The journal publishes high quality full papers, letters for rapid publication, and in-depth review articles. All papers are subjected to a fair peer-review process.