Preparation, Microstructure, and Mechanical Properties of TiB2 Using Ti3AlC2 as a Sintering Aid

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	Preparation, Microstructure, and Mechanical Properties of TiB2 Using Ti3AlC2 as a Sintering Aid
	L. Y. Zheng; F. Z. Li; Y. C. Zhou
	2012
发表期刊	Journal of the American Ceramic Society
ISSN	0002-7820
卷号	95 期号:6 页码:2028-2034
摘要	Titanium diboride (TiB2) was successfully hot-pressed at 1500 degrees C using titanium aluminum carbide (Ti3AlC2) as a sintering aid. The mechanisms for the improved sinterability of TiB2 by the addition of Ti3AlC2 involve, first, the Al coming from the decomposition of Ti3AlC2 can eliminate the oxide layer on the surface of TiB2; second, the TiCx (also from the decomposition of Ti3AlC2) has a positive influence on the densification of TiB2 due to its plasticity at high temperatures. TEM observations reveal that the interface between TiB2 and TiCx is coherent and strong, free of amorphous layers and oxide phases. An optimized composition of TiB2-10 wt% Ti3AlC2 was obtained with the unique combination of mechanical properties, including the elastic modulus of 567 GPa, the fracture toughness of 4.8 MPa.m(1/2), the flexural strength of 711 MPa, and the hardness of 25 GPa.
部门归属	[zhou, yanchun] arimpt, sci & technol funct lab, beijing 100076, peoples r china. [zheng, liya; li, fangzhi] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [zheng, liya] chinese acad sci, grad sch, beijing 100039, peoples r china.;zhou, yc (reprint author), arimpt, sci & technol funct lab, 1 s dahongmen rd, beijing 100076, peoples r china.;yczhou714@gmail.com
关键词	Titanium Diboride Ceramics Orientation Relationship State Properties Silicon-nitride Densification Stability Temperature Composites Iron Aluminum
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60500
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Y. Zheng,F. Z. Li,Y. C. Zhou. Preparation, Microstructure, and Mechanical Properties of TiB2 Using Ti3AlC2 as a Sintering Aid[J]. Journal of the American Ceramic Society,2012,95(6):2028-2034.
APA	L. Y. Zheng,F. Z. Li,&Y. C. Zhou.(2012).Preparation, Microstructure, and Mechanical Properties of TiB2 Using Ti3AlC2 as a Sintering Aid.Journal of the American Ceramic Society,95(6),2028-2034.
MLA	L. Y. Zheng,et al."Preparation, Microstructure, and Mechanical Properties of TiB2 Using Ti3AlC2 as a Sintering Aid".Journal of the American Ceramic Society 95.6(2012):2028-2034.