Atomic-Scale Microstructure of Hf-Al-C Ceramics

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	Atomic-Scale Microstructure of Hf-Al-C Ceramics
	H. Q. Nian; F. Z. Li; J. J. Li; J. Y. Wang; Y. C. Zhou
	2011
发表期刊	Journal of the American Ceramic Society
ISSN	0002-7820
卷号	94 期号:12 页码:4534-4540
摘要	A HfAlC composite composed of HfAl4C4 and Hf2Al4C5 was successfully synthesized by the hot-pressing method. The atomic-scale microstructure was investigated through high-resolution transmission electron microscopy (TEM) and Z-contrast scanning transmission electron microscopy (STEM) imaging. The TEM observations revealed that the HfAlC grains had elongated morphologies. There was no amorphous phase in the grain boundary. The microstructure of the composite was characterized by the stacking faults resulted from the insertion of (Al4C3) units, which led to the formation of a new phase Hf4Al12C13 and intergrowth structure between HfAl4C4 and Hf2Al4C5. In addition, the antiphase grain boundary in the ternary-layered ceramics was first observed and the formation mechanism was discussed.
部门归属	[nian, hongqiang; li, fangzhi; li, jingjing; wang, jingyang; zhou, yanchun] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [zhou, yanchun] aerosp res inst mat & proc technol, beijing 100076, peoples r china.;yczhou714@gmail.com
关键词	Transmission Electron-microscope Theoretical Elastic Property Crystal-structure Grain-boundaries Ternary Ceramics Carbides Oxidation Zr2al3c4 Zr3al3c5 Antiphase
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WOS记录号	WOS:000297848100072
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30601
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Q. Nian,F. Z. Li,J. J. Li,et al. Atomic-Scale Microstructure of Hf-Al-C Ceramics[J]. Journal of the American Ceramic Society,2011,94(12):4534-4540.
APA	H. Q. Nian,F. Z. Li,J. J. Li,J. Y. Wang,&Y. C. Zhou.(2011).Atomic-Scale Microstructure of Hf-Al-C Ceramics.Journal of the American Ceramic Society,94(12),4534-4540.
MLA	H. Q. Nian,et al."Atomic-Scale Microstructure of Hf-Al-C Ceramics".Journal of the American Ceramic Society 94.12(2011):4534-4540.

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