Oxidation Behavior at 1000-1300 °C in air of Ti2AlC-20TiB2 Synthesized by<i> in</i><i>-situ</i> Reaction/Hot Pressing

doi:10.15541/jim20240352

IMR OpenIR

	Oxidation Behavior at 1000-1300 °C in air of Ti2AlC-20TiB2 Synthesized by in-situ Reaction/Hot Pressing
	Wang, Wenting 1,2; Xu, Jingjun 1; Ma, Ke 1; Li, Meishuan 1; Li, Xingchao 3; Li, Tongqi 3
通讯作者	Xu, Jingjun(jjxu@imr.ac.cn)
	2025-01-20
发表期刊	JOURNAL OF INORGANIC MATERIALS
ISSN	1000-324X
卷号	40 期号:1 页码:31-38
摘要	Ti2AlC is considered to be one of the compounds with the best antioxidant properties in MAX phase materials, with potential application prospects in the field of high-temperature structural materials and high-temperature antioxidant protective coatings. However, the low hardness and strength of single phase Ti2AlC limit its wide application in the field of high-temperature material. In order to improve the properties of Ti2AlC, Ti2AlC-20%TiB2 (in volume) composites (referred to as Ti2AlC-20TiB2) were synthesized by the in-situ solid-liquid phase reaction/hot pressing method. Besides, the high temperature oxidation behavior in the temperature range of 1000-1300 degrees C was studied, and the oxidation resistance mechanism at high temperature was analyzed. The results show that the oxidation kinetics of Ti2AlC-20TiB2 composites is logarithmic, exhibiting superior oxidation resistance compared to single phase Ti2AlC. Below 1200 degrees C, the oxide scale is mainly composed of an inner layer of Al2O3 and an outer layer of TiO2, while the outer layer of oxide scale is a mixture of TiO2 and Al2TiO5 at 1300 degrees C. The Al2O3 protective layer formed in the composite is denser than that in single-phase Ti2AlC, which is the key to its excellent antioxidant performance. The addition of TiB2 reduces the grain size of the material and increases the number of grain boundaries for short-circuit diffusion, which facilitates the selective oxidation of Al and accelerates the formation of Al2O3 protective layer. Additionally, B2O3 produced during the oxidation of TiB2 can effectively fill the micropores and repair microcracks, thereby preventing the internal diffusion of O and further enhancing the antioxidant properties of the composites.
关键词	Ti2AlC-TiB2 composite high-temperature oxidation behavior oxidation protective layer high-temperature oxidation resistance mechanism
资助者	National Natural Science Foundation of China
DOI	10.15541/jim20240352
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52071318]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:001422050400001
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179971
专题	中国科学院金属研究所
通讯作者	Xu, Jingjun
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Aerosp Res Inst Mat & Proc Technol, Sci & Technol Adv Funct Composite Lab, Beijing 100076, Peoples R China
推荐引用方式 GB/T 7714	Wang, Wenting,Xu, Jingjun,Ma, Ke,et al. Oxidation Behavior at 1000-1300 °C in air of Ti2AlC-20TiB2 Synthesized by in-situ Reaction/Hot Pressing[J]. JOURNAL OF INORGANIC MATERIALS,2025,40(1):31-38.
APA	Wang, Wenting,Xu, Jingjun,Ma, Ke,Li, Meishuan,Li, Xingchao,&Li, Tongqi.(2025).Oxidation Behavior at 1000-1300 °C in air of Ti2AlC-20TiB2 Synthesized by in-situ Reaction/Hot Pressing.JOURNAL OF INORGANIC MATERIALS,40(1),31-38.
MLA	Wang, Wenting,et al."Oxidation Behavior at 1000-1300 °C in air of Ti2AlC-20TiB2 Synthesized by in-situ Reaction/Hot Pressing".JOURNAL OF INORGANIC MATERIALS 40.1(2025):31-38.