Effects of whisker surface modification on microstructures, mechanical and thermal properties of beta-Si3N4 whiskers reinforced Al matrix composites
文献类型：期刊论文
| 作者 | Zhang, Chenxu1; Yao, Dongxu; Yin, Jinwei; Zuo, Kaihui; Xia, Yongfeng; Liang, Hanqin; Zeng, Yu-Ping |
| 刊名 | MATERIALS & DESIGN
 |
| 出版日期 | 2018 |
| 卷号 | 159页码:117 |
| 关键词 | Metal matrix composites Ag coating Interface Mechanical properties Thermal conductivities |
| ISSN号 | 0264-1275 |
| DOI | 10.1016/j.matdes.2018.08.055 |
| 英文摘要 | In order to modify the interfacial bonding of beta-Si3N4 whiskers (beta-Si(3)N(4)w) reinforced Al matrix composites, the Ag-coated beta-Si(3)N(4)w with varying Ag contents were incorporated into the Al matrix by a hot pressing method. The interfacial structure showed that the beta-Si(3)N(4)w was surrounded by an amorphous Ag enrichment layer and well bonded with Al matrix with no pores and reaction products near the interface. The relative density, fracture toughness and thermal conductivities of compositeswere distinctly improved by the modified interface because of improved wettability, reduced thermal mismatch stress and lowered interfacial thermal resistance between Al and beta-Si(3)N(4)w. When the Ag content on whiskers is 1.8 vol%, the composites shows the maximum fracture toughness (23.9 MPa.m(1/2)). When the Ag content is 2.7 vol%, both the maximum ductility and the maximum thermal conductivity were obtained, corresponding to an elongation at fracture and a 25 degrees C thermal conductivity of 15.5% and 198.6 W/m.K, respectively. However, excessive Ag content on whiskers didn't bring about promotion in mechanical properties and thermal conductivities due to the evolution of microstructure and the limitation of the relative density of composites. (C) 2018 Elsevier Ltd. All rights reserved. |
| 学科主题 | Materials Science, Multidisciplinary |
| WOS记录号 | WOS:000445646100011 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | This work is supported by National Key R&D Program of China (2017YFB0703200, 2017YFB0406203 and 2017YFB0306500), Natural Science Foundation of China (No. 51302290 and No. 51501215) and Shanghai Sailing Program (No. 16YF1412900). ; This work is supported by National Key R&D Program of China (2017YFB0703200, 2017YFB0406203 and 2017YFB0306500), Natural Science Foundation of China (No. 51302290 and No. 51501215) and Shanghai Sailing Program (No. 16YF1412900). |
| 源URL | [http://ir.sic.ac.cn/handle/331005/24621]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 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 | Zhang, Chenxu,Yao, Dongxu,Yin, Jinwei,et al. Effects of whisker surface modification on microstructures, mechanical and thermal properties of beta-Si3N4 whiskers reinforced Al matrix composites[J]. MATERIALS & DESIGN,2018,159:117, 126. |
| APA | Zhang, Chenxu.,Yao, Dongxu.,Yin, Jinwei.,Zuo, Kaihui.,Xia, Yongfeng.,...&Zeng, Yu-Ping.(2018).Effects of whisker surface modification on microstructures, mechanical and thermal properties of beta-Si3N4 whiskers reinforced Al matrix composites.MATERIALS & DESIGN,159,117. |
| MLA | Zhang, Chenxu,et al."Effects of whisker surface modification on microstructures, mechanical and thermal properties of beta-Si3N4 whiskers reinforced Al matrix composites".MATERIALS & DESIGN 159(2018):117. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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