Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites

doi:10.1111/j.1551-2916.2009.03281.x

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	Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites
	He, Ling-Feng 1,2; Bao, Yi-Wang 1; Zhou, Yan-Chun 1
刊名	JOURNAL OF THE AMERICAN CERAMIC SOCIETY
	2009-11-01
卷号	92 期号:11 页码:2751-2758
ISSN号	0002-7820
DOI	10.1111/j.1551-2916.2009.03281.x
通讯作者	Zhou, Yan-Chun(yczhou@imr.ac.cn)
英文摘要	ZrO2-Al2O3 nanocrystalline powders have been synthesized by oxidizing ternary Zr2Al3C4 powders. The simultaneous oxidation of Al and Zr in Zr2Al3C4 results in homogeneous mixture of ZrO2 and Al2O3 at nanoscale. Bulk nano- and submicro-composites were prepared by hot-pressing as-oxidized powders at 1100 degrees-1500 degrees C. The composition and microstructure evolution during sintering was investigated by XRD, Raman spectroscopy, SEM, and TEM. The crystallite size of ZrO2 in the composites increased from 7.5 nm for as-oxidized powders to about 0.5 mu m at 1500 degrees C, while the tetragonal polymorph gradually converted to monolithic one with increasing crystallite size. The Al2O3 in the composites transformed from an amorphous phase in as oxidized powders to theta phase at 1100 degrees C and alpha phase at higher temperatures. The hardness of the composite increased from 2.0 GPa at 1100 degrees C to 13.5 GPa at 1400 degrees C due to the increase of density.
资助项目	National Outstanding Young Scientist Foundation[59925208] ; National Outstanding Young Scientist Foundation[50125204] ; Natural Science Foundation of China[90403027] ; Natural Science Foundation of China[50832008] ; Chinese Academy of Sciences
WOS研究方向	Materials Science
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000271188400042
资助机构	National Outstanding Young Scientist Foundation ; Natural Science Foundation of China ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/99145]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhou, Yan-Chun
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	He, Ling-Feng,Bao, Yi-Wang,Zhou, Yan-Chun. Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2009,92(11):2751-2758.
APA	He, Ling-Feng,Bao, Yi-Wang,&Zhou, Yan-Chun.(2009).Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,92(11),2751-2758.
MLA	He, Ling-Feng,et al."Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 92.11(2009):2751-2758.