Investigation of phase and microstructural transformations in different alumina-silica fibers at varied heat treatment temperatures: Exploring the mechanism of Silica's influence

doi:10.1016/j.ceramint.2024.07.315

IMR OpenIR

	Investigation of phase and microstructural transformations in different alumina-silica fibers at varied heat treatment temperatures: Exploring the mechanism of Silica's influence
	Sun, Zhongyuan 1; Lin, Hongjiao 1; Zhang, Lu 1; Cai, Xiangyu 1; Feng, Tao 1; Zhang, Jiaping 2; Yang, Xiaoguang 3
通讯作者	Lin, Hongjiao(linhongjiao@nwpu.edu.cn) ; Feng, Tao(fengtao@nwpu.edu.cn)
	2024-10-15
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	50 期号:20 页码:39406-39421
摘要	The study investigated the phase transformation and microstructural comparison of two types of continuous alumina fibers with varying silica contents. These fibers were subjected to heat treatment at temperatures of 1100, 1200, 1300, and 1400 degrees C in air. By comparing the experimental results of the two different fibers, relevant influencing mechanisms were derived. The appearance of mullite phase in the fibers occurred when the heat treatment temperature reached 1200 degrees C. Variations in silicon content led to inconsistent pinning effects, resulting in differences in the occurrence of irregular structures on the surface of the two types of fibers. Following heat treatment at 1300 degrees C, the fibers exhibited scale-like and mosaic-like structures, accompanied by phase aggregation. Subsequent heat treatment at 1400 degrees C resulted in the fibers displaying layered structures composed of alpha-Al2O3 phase and undergoing significant changes in microstructure. Notably, the two types of fibers exhibited a significant difference in the presence or absence of a glass phase, and the addition of silicon oxide to a certain extent was found to inhibit the crystal transformation of Al2O3. Additionally, the experimental results were analyzed in terms of influencing mechanisms based on theories such as activation energy barriers and total free energy.
关键词	Alumina fiber Heat treatment Crystal transformation Microstructure
资助者	National Key R & D Program of China ; Open Fund of Liaoning Provincial Key Laboratory of Aeroengine Materials Tribology
DOI	10.1016/j.ceramint.2024.07.315
收录类别	SCI
语种	英语
资助项目	National Key R & D Program of China[2022YFB3705300] ; Open Fund of Liaoning Provincial Key Laboratory of Aeroengine Materials Tribology[LKLAMTF202404]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:001309538200001
出版者	ELSEVIER SCI LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/189799
专题	中国科学院金属研究所
通讯作者	Lin, Hongjiao; Feng, Tao
作者单位	1.Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, State Key Lab Clean & Efficient Turbomachinery Pow, Xian 710072, Peoples R China 2.AECC Shenyang Liming Aeroengine Co Ltd, Shenyang 110043, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Liaoning Key Lab Aeroengine Mat Tribol, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sun, Zhongyuan,Lin, Hongjiao,Zhang, Lu,et al. Investigation of phase and microstructural transformations in different alumina-silica fibers at varied heat treatment temperatures: Exploring the mechanism of Silica's influence[J]. CERAMICS INTERNATIONAL,2024,50(20):39406-39421.
APA	Sun, Zhongyuan.,Lin, Hongjiao.,Zhang, Lu.,Cai, Xiangyu.,Feng, Tao.,...&Yang, Xiaoguang.(2024).Investigation of phase and microstructural transformations in different alumina-silica fibers at varied heat treatment temperatures: Exploring the mechanism of Silica's influence.CERAMICS INTERNATIONAL,50(20),39406-39421.
MLA	Sun, Zhongyuan,et al."Investigation of phase and microstructural transformations in different alumina-silica fibers at varied heat treatment temperatures: Exploring the mechanism of Silica's influence".CERAMICS INTERNATIONAL 50.20(2024):39406-39421.