Mechanical properties and thermal conductivity of Si3N4 ceramics with YF3 and MgO as sintering additives
文献类型：期刊论文
| 作者 | Liang, Hanqin; Zeng, Yuping; Zuo, Kaihui; Xia, Yongfeng; Yao, Dongxu; Yin, Jinwei |
| 刊名 | CERAMICS INTERNATIONAL
 |
| 出版日期 | 2016-11-01 |
| 卷号 | 42期号:14页码:15679-15686 |
| 关键词 | Si3N4 Thermal conductivity YF3 EBSD Flexural strength |
| 英文摘要 | Si3N4 ceramic was densified by hot pressing sintering at 1750 degrees C for 1 h under the uniaxial pressure of 20 MPa in N-2 atmosphere with YF3 and MgO as sintering additives. The thermal conductivities of SN-YF specimen were both higher than that of Si3N4 ceramic sintered with Y2O3 and MgO before and after annealing treatment. The grain size and aspect ratio in SN-YF specimen were both bigger than those in the SN-YO specimen, which was beneficial for the creation of high thermal conductive path. On the other hand, the improvement of thermal conductivity by the addition of YF3 might be attributed to the reduction of the grain boundary phase due to the evaporation of SiF4, and the resultant reduction of the lattice oxygen due to the reduction of SiO2 in the grain boundary phase. The {0001} direction of grains had the probability of growing along the hot pressing direction in the SN-YF specimen, which was beneficial for the improvement of thermal conductivity while the {0001} direction grew along the X-0-Y-0 plane in the SN-YO specimen. The mechanical properties of SN-YF specimen were comparable to those of SN-YO specimen. (C) 2016 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] | BONDED SILICON-NITRIDE ; MGSIN2 ADDITION ; BETA-SI3N4 ; POWDER ; Y2O3 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000382269800070 |
| 源URL | [http://ir.sic.ac.cn/handle/331005/22128]  |
| 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 | Chinese Acad Sci, State Key Lab High Performance Ceram & Superfine, Shanghai Inst Ceram, Shanghai 200050, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang, Hanqin,Zeng, Yuping,Zuo, Kaihui,et al. Mechanical properties and thermal conductivity of Si3N4 ceramics with YF3 and MgO as sintering additives[J]. CERAMICS INTERNATIONAL,2016,42(14):15679-15686. |
| APA | Liang, Hanqin,Zeng, Yuping,Zuo, Kaihui,Xia, Yongfeng,Yao, Dongxu,&Yin, Jinwei.(2016).Mechanical properties and thermal conductivity of Si3N4 ceramics with YF3 and MgO as sintering additives.CERAMICS INTERNATIONAL,42(14),15679-15686. |
| MLA | Liang, Hanqin,et al."Mechanical properties and thermal conductivity of Si3N4 ceramics with YF3 and MgO as sintering additives".CERAMICS INTERNATIONAL 42.14(2016):15679-15686. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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