| Mechanical, electrical properties and microstructures of hot-pressed B4C-WB2 composites | |
| Ma, Ke1; Shi, Xiaoguo2; Cao, Xiaozhou3; Yang, Zhibin1; Zuo, Jun1; Xu, Jingjun1; Li, Meishuan1 | |
| Corresponding Author | Xu, Jingjun(jjxu@imr.ac.cn) |
| 2022-07-15 | |
| Source Publication | CERAMICS INTERNATIONAL
 |
| ISSN | 0272-8842 |
| Volume | 48Issue:14Pages:20211-20219 |
| Abstract | 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. |
| Keyword | B4C-WB2 composites Orientation growth Mechanical properties Toughening mechanism Electrical conductivity |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.ceramint.2022.03.300 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[52071318] ; National Natural Science Foundation of China[51472048] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000811248600001 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174970 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xu, Jingjun |
| Affiliation | 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 |
| Recommended Citation 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. |
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