The effect of annealing temperature on flexural strength, dielectric loss and thermal conductivity of Si3N4 ceramics
文献类型：期刊论文
| 作者 | Chen, HB; Wang, WD; Yu, X; Zuo, KH; Xia, YF; Yin, JW; Liang, HQ; Yao, DX; Zeng, YP |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2020-01-15 |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2019.152203 |
| 文献子类 | Article |
| 英文摘要 | Effect of annealing temperatures on flexural strength, dielectric and thermal properties of Si3N4 ceramics was investigated with different amounts of Yb2O3 (3.5 mol% and 7 mol%) as sintering additives. High density of >99% were achieved after hot pressing. The post annealing heat treatment promoted the crystallization of the grain boundary glass phase. Low dielectric loss of <4 x 10(-4) were obtained for all samples, a low dielectric loss of 1.8 x 10(-4) was achieved by annealing at 1500 degrees C for 24 h with 7 mol% Yb2O3 as sintering additives. A mild anisotropic microstructure was obtained due to merit of hot pressing method. High thermal conductivity of >75 W/(m.K) and >90 W/(m.K) were obtained in the direction parallel and perpendicular to the hot-pressing direction in all samples, respectively. The low flexural strength of similar to 600 MPa may attribute to the large grain in the matrix and lack of elongated abnormal grains. (C) 2019 Elsevier B.V. All rights reserved. |
| WOS关键词 | SILICON-NITRIDE CERAMICS ; MECHANICAL-PROPERTIES ; PHASES ; MGO |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28376]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Chen, HB,Wang, WD,Yu, X,et al. The effect of annealing temperature on flexural strength, dielectric loss and thermal conductivity of Si3N4 ceramics[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020. |
| APA | Chen, HB.,Wang, WD.,Yu, X.,Zuo, KH.,Xia, YF.,...&Zeng, YP.(2020).The effect of annealing temperature on flexural strength, dielectric loss and thermal conductivity of Si3N4 ceramics.JOURNAL OF ALLOYS AND COMPOUNDS. |
| MLA | Chen, HB,et al."The effect of annealing temperature on flexural strength, dielectric loss and thermal conductivity of Si3N4 ceramics".JOURNAL OF ALLOYS AND COMPOUNDS (2020). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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