Effects of TaSi2 addition on room temperature mechanical properties of ZrB2-20SiC composites

doi:10.1016/j.ceramint.2018.05.075

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	Effects of TaSi2 addition on room temperature mechanical properties of ZrB2-20SiC composites
	Yang, Y 1; Qian, YH ; Xu, JJ ; Li, MS
刊名	CERAMICS INTERNATIONAL
	2018-10-01
卷号	44 期号:14 页码:16150-16156
关键词	ZrB2-based ceramics Mechanical properties TaSi2 Microstructure
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2018.05.075
英文摘要	The effects of TaSi2 addition on the room temperature mechanical properties of ZrB2-20SiC (volume fraction, %) composite were investigated. Dense ZrB2-20SiC-xTaSi(2) (x = 3, 6, 10) composites were prepared by hot pressing the mixture of ZrB2, SiC and TaSi2 powders at 1850-1900 degrees C under 30 MPa in flowing Ar. In the as-prepared composites, apart from ZrB2, SiC and TaSi2, (Zr,Ta)B-2 solid solution also existed around ZrB2 grains. It became a continuous layer and the thickness increased gradually with the increase of TaSi2 content. When the addition of TaSi2 was within the range of 3-10%, Vickers hardness of ZrB2-2oSiC reduced slightly by about 1-2 GPa, but the flexural strength and fracture toughness increased simultaneously by more than 35%. These phenomena could be attributed to the relatively low hardness of TaSi2, and the decrease of ZrB2 grain size as well as the presence of a continuous (Zr,Ta)B-2 solid solution layer around ZrB2 grains.
学科主题	Materials Science, Ceramics
语种	英语
WOS记录号	WOS:000442714100005
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79933]
专题	金属研究所_中国科学院金属研究所
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Yang, Y,Qian, YH,Xu, JJ,et al. Effects of TaSi2 addition on room temperature mechanical properties of ZrB2-20SiC composites[J]. CERAMICS INTERNATIONAL,2018,44(14):16150-16156.
APA	Yang, Y,Qian, YH,Xu, JJ,&Li, MS.(2018).Effects of TaSi2 addition on room temperature mechanical properties of ZrB2-20SiC composites.CERAMICS INTERNATIONAL,44(14),16150-16156.
MLA	Yang, Y,et al."Effects of TaSi2 addition on room temperature mechanical properties of ZrB2-20SiC composites".CERAMICS INTERNATIONAL 44.14(2018):16150-16156.