Oxidation kinetics and microstructure evolution of air oxidation behavior of TC18 alloy

被引：17
作者：
Xi, Aiying [1 ]
Zhuo, Longchao [1 ]
Shao, Hui [1 ]
Shan, Di [1 ]
Sun, Feng [2 ]
Lu, Jinwen [3 ,4 ]
Ji, Kaile [1 ]
Chen, Bingqing [5 ]
Zhao, Xiaohua [2 ]
Wang, Kaixuan [2 ]
机构：
[1] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China
[2] Western Superconducting Technol Co Ltd, Xian 710018, Peoples R China
[3] Northwest Inst Nonferrous Met Res, Adv Mat Res Cent, Xian 710016, Peoples R China
[4] Xian Rarealloys Co Ltd, Xian 710016, Peoples R China
[5] AECC Beijing Inst Aeronaut Mat, Printing Res & Engn Technol Ctr 3D, Beijing 100095, Peoples R China
来源：
VACUUM | 2022年 / 204卷
关键词：
TC18; alloy; High-temperature oxidation; Oxide layer; Oxidation kinetics; MECHANICAL-PROPERTIES; HIGH-TEMPERATURE; TITANIUM;
D O I：
10.1016/j.vacuum.2022.111332
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The high-temperature air oxidation behaviors at 600 degrees C, 700 degrees C and 800 degrees C of the TC18 alloy were systematically studied. The oxidation kinetics of TC18 alloy, the phase composition, microscopic morphology and chemical composition of the surface oxide films were analyzed to elucidate possible oxidation mechanisms. The results revealed that the oxidation behavior of TC18 alloy followed a linear-parabolic law at 600 degrees C and 700 degrees C while being governed by a simple linear law at 800 degrees C. The long-term oxidation for 24 h at 600 degrees C and 700 degrees C resulted in the oxide films composed of both Ti3O and TiO2, with dominant Ti3O and TiO2 respectively for the oxide films formed at 600 degrees C and 700 degrees C specifically. Especially for the oxidation at 800 degrees C, the oxide film was revealed to consist of three layers of the outer layer Al2O3, the secondary outer layer TiO2 and the dominant inner layer TiO2.
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页数：7
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