Improved thermal conductivity of sintered reaction-bonded silicon nitride using a BN/graphite powder bed
文献类型：期刊论文
| 作者 | Li, Yinsheng1; Kim, Ha-Neul1; Wu, Haibo2; Kim, Mi-Ju1; Ko, Jae-Woong1; Kim, Jin-Myung1; Park, Young-Jo1; Huang, Zhengren2; Kim, Hai-Doo1 |
| 刊名 | Journal of the European Ceramic Society
 |
| 出版日期 | 2017 |
| 卷号 | 37期号:15页码:4483-4490 |
| ISSN号 | 09552219 |
| DOI | 10.1016/j.jeurceramsoc.2017.05.045 |
| 英文摘要 | Sintered reaction-bonded silicon nitride (SRBSN) with improved thermal conductivity was achieved after the green compact of submicron Si powder containing 4.22 wt% impurity oxygen and Y2O3-MgO additives was nitrided at 1400 °C for 6 h and then post-sintered at 1900 °C for 12 h using a BN/graphite powder bed. During nitridation, the BN/10 wt% C powder bed altered the chemistry of secondary phase by promoting the removal of SiO2, which led to the formation of larger, purer and more elongated Si3N4grains in RBSN sample. Moreover, it also enhanced the elimination of SiO2and residual Y2Si3O3N4secondary phase during post-sintering, and thus induced larger elongated grains, decreased lattice oxygen content and increased Si3N4-Si3N4contiguity in final SRBSN product. These characteristics enabled SRBSN to obtain significant increase (∼40.7%) in thermal conductivity from 86 to 121 W m−1 K−1without obvious decrease in electrical resistivity after the use of BN/graphite instead of BN as powder bed. © 2017 Elsevier Ltd |
| 源URL | [http://ir.sic.ac.cn/handle/331005/25750]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Engineering Ceramics Research Group, Korea Institute of Materials Science, Changwon; Gyeongnam; 51508, Korea, Republic of; 2.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai; 200050, China |
| 推荐引用方式 GB/T 7714 | Li, Yinsheng,Kim, Ha-Neul,Wu, Haibo,et al. Improved thermal conductivity of sintered reaction-bonded silicon nitride using a BN/graphite powder bed[J]. Journal of the European Ceramic Society,2017,37(15):4483-4490. |
| APA | Li, Yinsheng.,Kim, Ha-Neul.,Wu, Haibo.,Kim, Mi-Ju.,Ko, Jae-Woong.,...&Kim, Hai-Doo.(2017).Improved thermal conductivity of sintered reaction-bonded silicon nitride using a BN/graphite powder bed.Journal of the European Ceramic Society,37(15),4483-4490. |
| MLA | Li, Yinsheng,et al."Improved thermal conductivity of sintered reaction-bonded silicon nitride using a BN/graphite powder bed".Journal of the European Ceramic Society 37.15(2017):4483-4490. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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