期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 828, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.154271
关键词
Microstructure; Oxidation behavior; Al2O3 coating; TiAl alloy; CPED
资金
- Science and Technology Program for Research and Development of Shaanxi Province [2018JZ5004]
Al2O3 coating was fabricated on the surface of gamma-TiAl alloy via cathodic plasma electrolytic deposition (CPED) technique. The microstructure and the composition of the coating were elaborately characterized. The results revealed that, the uniform coating combined well with the substrate, which was mainly composed of alpha-Al2O3, gamma-Al2O3 and trace amount of amorphous Al(OH)(3). Moreover, the high temperature oxidation behaviors of the substrate, the coating and their interface were investigated in detail. It was found that the existence of the Al2O3 coating could substantially decline the oxidation rate of TiAl alloy, because of the significant increase in high temperature oxidation resistance. (c) 2020 Elsevier B.V. All rights reserved.
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