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Fabrication of homogeneous tungsten porous matrix using spherical tungsten powders prepared by thermal plasma spheroidization process
Li, Baoqiang1,2; Sun, Zhiqiang1,2; Jin, Huacheng1; Hu, Peng1; Yuan, Fangli1
2016-09-01
发表期刊INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
ISSN0263-4368
卷号59期号:SEP页码:105-113
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.
关键词Spherical Tungsten Plasma Spheroidization Uniform Pore Porous Matrix Kinetic Analysis
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.ijrmhm.2016.06.002
收录类别SCI
语种英语
关键词[WOS]W-CU COMPOSITES ; MECHANICAL-PROPERTIES ; LIQUID INFILTRATION ; MICROSTRUCTURES ; CATHODES ; COPPER ; NICKEL
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
项目资助者National Natural Science Foundation of China (NSFC)(11535003 ; Fund of State Key Laboratory of Multiphase Complex Systems(Y525021140) ; 11575228)
WOS记录号WOS:000379886800013
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21255
专题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
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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.
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