Mechanical, electrical properties and microstructures of hot-pressed B4C-WB2 composites

doi:10.1016/j.ceramint.2022.03.300

IMR OpenIR

	Mechanical, electrical properties and microstructures of hot-pressed B4C-WB2 composites
	Ma, Ke 1; Shi, Xiaoguo 2; Cao, Xiaozhou 3; Yang, Zhibin 1; Zuo, Jun 1; Xu, Jingjun 1; Li, Meishuan 1
通讯作者	Xu, Jingjun(jjxu@imr.ac.cn)
	2022-07-15
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	48 期号:14 页码:20211-20219
摘要	In this paper, dense B4C-WB2 composites were fabricated at 1950 degrees C using B4C and WB2 as raw materials via a hot press method. The phase composition, microstructures and mechanical properties of the B4C-WB2 composites with different B4C volume fraction were studied. The obtained 68.7 vol%B4C-WB2 composites demonstrated good comprehensive properties with high flexural strength of 696 MPa, superior hardness of 34.8 GPa, and acceptable fracture toughness of 3.3 MPa m1/2. The high flexural strength mainly resulted from the pinning effect of preferentially oriented strip-shape WB2 grains and clean grain interfaces between B4C and WB2 phases. The toughening mechanism of the B4C-WB2 composites was associated with the interfacial residual stress induced by the mismatch of thermal expansion coefficient. In addition, the B4C-WB2 composites demonstrated good electrical conductivity (3.3 x 105 S/m) with a low density of 5.589 g/cm3, making them of potential interest for cutting tools and armor protection applications.
关键词	B4C-WB2 composites Orientation growth Mechanical properties Toughening mechanism Electrical conductivity
资助者	National Natural Science Foundation of China
DOI	10.1016/j.ceramint.2022.03.300
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52071318] ; National Natural Science Foundation of China[51472048]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000811248600001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：19[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/321006/174973
专题	中国科学院金属研究所
通讯作者	Xu, Jingjun
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Shandong Acad Sci, Qilu Univ Technol, Sch Environm Sci & Engn, Jinan 250353, Peoples R China 3.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Ma, Ke,Shi, Xiaoguo,Cao, Xiaozhou,et al. Mechanical, electrical properties and microstructures of hot-pressed B4C-WB2 composites[J]. CERAMICS INTERNATIONAL,2022,48(14):20211-20219.
APA	Ma, Ke.,Shi, Xiaoguo.,Cao, Xiaozhou.,Yang, Zhibin.,Zuo, Jun.,...&Li, Meishuan.(2022).Mechanical, electrical properties and microstructures of hot-pressed B4C-WB2 composites.CERAMICS INTERNATIONAL,48(14),20211-20219.
MLA	Ma, Ke,et al."Mechanical, electrical properties and microstructures of hot-pressed B4C-WB2 composites".CERAMICS INTERNATIONAL 48.14(2022):20211-20219.