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Crystallization Behavior of Hybrid Mullite Fiber Precursors
Ma, Xi-Fei; Lin, Gen-Lian; Kang, Zhuang; Huang, Xiao
2017
发表期刊Wuji Cailiao Xuebao/Journal of Inorganic Materials
ISSN1000324X
卷号32期号:7页码:739-743
摘要Glass free fine-grained microstructure is ideal for preparing mullite fibers with good high temperature mechanical properties. Single phase/diphasic mullite hybrid precursor was adopted to adjust crystalline microstructure of mullite fibers without adding any glass formers. The single phase precursor crystallized in situ to form mullite at 980 acting as seed crystals for diphasic components in hybrid precursors to induce the formation of mullite crystals at low temperatures. A series of spinnable hybrid mullite precursors were prepared by mixing single phase and diphasic mullite precursors, and their high temperature crystallization behaviors were investigated by XRD, DSC and SEM, with which optimum formulation of hybrid precursor was determined. The results reveal that hybrid precursor containing 70wt% single phase component has ideal crystalline properties and densification characteristics, with fine grain, uniform, and dense structure. Compared with the pure diphasic mullite precursor, the introduction of 70wt% single phase precursor resulted in an increase in apparent nucleation from 8×1012/cm3to 1×1015/cm3, and a reduction in grain size from 360 nm to 120 nm after heat-treatment at 1400 for 20 h. © 2017, Science Press. All right reserved.
DOI10.15541/jim20160618
EI入藏号20173704143759
EI主题词Mullite
EI分类号482.2 Minerals - 802.3 Chemical Operations - 812.3 Glass - 933.1 Crystalline Solids - 951 Materials Science
引用统计
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25620
专题中国科学院上海硅酸盐研究所
作者单位Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China
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GB/T 7714
Ma, Xi-Fei,Lin, Gen-Lian,Kang, Zhuang,et al. Crystallization Behavior of Hybrid Mullite Fiber Precursors[J]. Wuji Cailiao Xuebao/Journal of Inorganic Materials,2017,32(7):739-743.
APA Ma, Xi-Fei,Lin, Gen-Lian,Kang, Zhuang,&Huang, Xiao.(2017).Crystallization Behavior of Hybrid Mullite Fiber Precursors.Wuji Cailiao Xuebao/Journal of Inorganic Materials,32(7),739-743.
MLA Ma, Xi-Fei,et al."Crystallization Behavior of Hybrid Mullite Fiber Precursors".Wuji Cailiao Xuebao/Journal of Inorganic Materials 32.7(2017):739-743.
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