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
刊名	Journal of the American Ceramic Society
	2011
卷号	94 期号:12 页码:4534-4540
关键词	transmission electron-microscope theoretical elastic property crystal-structure grain-boundaries ternary ceramics carbides oxidation zr2al3c4 zr3al3c5 antiphase
ISSN号	0002-7820
中文摘要	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.
原文出处	://WOS:000297848100072
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/30601]
专题	金属研究所_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.