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

文献类型：期刊论文

作者Ma, Ke3; Shi, Xiaoguo2; Cao, Xiaozhou1; Yang, Zhibin3; Zuo, Jun3; Xu, Jingjun3; Li, Meishuan3
刊名CERAMICS INTERNATIONAL
出版日期2022-07-15
卷号48期号:14页码:20211-20219
ISSN号0272-8842
关键词B4C-WB2 composites Orientation growth Mechanical properties Toughening mechanism Electrical conductivity
DOI10.1016/j.ceramint.2022.03.300
通讯作者Xu, Jingjun(jjxu@imr.ac.cn)
英文摘要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.
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
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000811248600001
资助机构National Natural Science Foundation of China
源URL[http://ir.imr.ac.cn/handle/321006/174972]  
专题金属研究所_中国科学院金属研究所
通讯作者Xu, Jingjun
作者单位1.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
2.Shandong Acad Sci, Qilu Univ Technol, Sch Environm Sci & Engn, Jinan 250353, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, 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.

入库方式： OAI收割

来源：金属研究所

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