Microstructure and mechanical properties of B4C-TiB2 composites prepared by reaction hot pressing using Ti3SiC2 as additive
文献类型：期刊论文
| 作者 | He, Ping1,2; Dong, Shaoming1; Kan, Yanmei1; Zhang, Xiangyu1; Ding, Yusheng1 |
| 刊名 | CERAMICS INTERNATIONAL
 |
| 出版日期 | 2016 |
| 卷号 | 42期号:1页码:650-656 |
| 关键词 | Ti3SiC2 Reaction hot pressing Phase transformation Microstructure and mechanical properties |
| 英文摘要 | B4C-TiB2 composites were fabricated via reaction hot pressing at 2100 degrees C under a pressure of 25 MPa, using B4C and Ti3SiC2 powders as raw materials. The phase transformations, microstructure and mechanical properties were investigated by XRD, TG-DTA, SEM, TEM and EDS. It is found that the SiC and TiB2 particles are homogenously dispersed in the B4C-TiB2 composites, where nano-sized TiB2 particles are mainly located within the B4C matrix grains, while the large-sized TiB2 particles at the matrix grains boundaries. Due to the pinning effect of SiC and TiB2 particles on B4C grain growth, the grain size of the composite is significantly reduced, leading to a great improvement of the mechanical properties. B4C-TiB2 composite prepared from B4C-10 wt% Ti3SiC2 starting powder shows high flexural strength, fracture toughness and microhardness of 592 MPa, 7.01 MPa m(1/2) and 3163 kg/mm(2), respectively. Crack deflection and crack bridging are most likely the potential toughening mechanisms in the composites. Furthermore, according to the XRD and TG-DTA analysis, the possible reaction mechanisms leading to the in-situ formation of TiB2 were proposed. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Materials Science, Ceramics |
| 研究领域[WOS] | Materials Science |
| 关键词[WOS] | CERAMIC COMPOSITES ; BORON-CARBIDE ; B4C |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000365369500075 |
| 源URL | [http://ir.sic.ac.cn/handle/331005/23350]  |
| 专题 | 上海硅酸盐研究所_结构陶瓷与复合材料工程研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Ping,Dong, Shaoming,Kan, Yanmei,et al. Microstructure and mechanical properties of B4C-TiB2 composites prepared by reaction hot pressing using Ti3SiC2 as additive[J]. CERAMICS INTERNATIONAL,2016,42(1):650-656. |
| APA | He, Ping,Dong, Shaoming,Kan, Yanmei,Zhang, Xiangyu,&Ding, Yusheng.(2016).Microstructure and mechanical properties of B4C-TiB2 composites prepared by reaction hot pressing using Ti3SiC2 as additive.CERAMICS INTERNATIONAL,42(1),650-656. |
| MLA | He, Ping,et al."Microstructure and mechanical properties of B4C-TiB2 composites prepared by reaction hot pressing using Ti3SiC2 as additive".CERAMICS INTERNATIONAL 42.1(2016):650-656. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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