Fabrication of homogeneous tungsten porous matrix using spherical tungsten powders prepared by thermal plasma spheroidization process
文献类型：期刊论文
| 作者 | Li, Baoqiang1,2; Sun, Zhiqiang1,2; Jin, Huacheng1; Hu, Peng1 ; Yuan, Fangli1
|
| 刊名 | INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 59期号:SEP页码:105-113 |
| 关键词 | Spherical tungsten plasma spheroidization Uniform pore Porous matrix Kinetic analysis |
| ISSN号 | 0263-4368 |
| 英文摘要 | In this work, spherical and dense tungsten particles with average size of 13 pm were synthesized by thermal plasma spheroidization process, and were further used to fabricate porous tungsten matrix with homogeneous pore distribution and open pore channel. The influences of sintering temperatures, dwelling time and additive on the microstructure and microhardness evolution of porous products were investigated, and the experimental results show that spherical and dense particles could keep their initial shape and favor the reservation of packed pores with narrow pore size distribution, which exhibits superiority in fabrication of tungsten matrix with uniform pore distribution compared with irregular tungsten powders. Specially, the porosity of porous tungsten matrix could be finely tuned from 25% to 30%, which has obvious effect on microhardness of obtained porous skeleton. The sintering kinetic analysis indicates that grain boundary diffusion is the primary mass transport mechanism during the fabricating porous tungsten matrix process. Furthermore, W-Cu composites fabricated by spherical powders exhibit higher thermal conductivity than that of irregular powders, which reveals the superiority of spherical tungsten powder. (C) 2016 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Materials Science ; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | W-CU COMPOSITES ; MECHANICAL-PROPERTIES ; LIQUID INFILTRATION ; MICROSTRUCTURES ; CATHODES ; COPPER ; NICKEL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000379886800013 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/21255]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Baoqiang,Sun, Zhiqiang,Jin, Huacheng,et al. Fabrication of homogeneous tungsten porous matrix using spherical tungsten powders prepared by thermal plasma spheroidization process[J]. INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS,2016,59(SEP):105-113. |
| APA | Li, Baoqiang,Sun, Zhiqiang,Jin, Huacheng,Hu, Peng,&Yuan, Fangli.(2016).Fabrication of homogeneous tungsten porous matrix using spherical tungsten powders prepared by thermal plasma spheroidization process.INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS,59(SEP),105-113. |
| MLA | Li, Baoqiang,et al."Fabrication of homogeneous tungsten porous matrix using spherical tungsten powders prepared by thermal plasma spheroidization process".INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS 59.SEP(2016):105-113. |
入库方式： OAI收割
来源：过程工程研究所
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