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The sintering behavior of quasi-spherical tungsten nanopowders
Li, Baoqiang1,2; Sun, Zhiqiang1,2; Hou, Guolin1,2; Ding, Fei1; Hu, Peng1; Yuan, Fangli1; Hu, P
2016-04-01
发表期刊INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
ISSN0263-4368
卷号56期号:APR页码:44-50
摘要In this work, the sintering behavior of quasi-spherical tungsten nanoparticles was investigated by analysis the sintered compacts obtained at different sintering temperatures and dwell time, and the influence of microstructures on the density and Vickers microhardness of sintered products was also studied. Experimental results show that particle shape and size distribution are critical to the sintering activity and mechanical properties of obtained compacts. 91.3% of theoretical density (TD) of the compact could be obtained at low sintering temperature of 1500 degrees C, and the highest hardness of 606 VHN could be achieved when sintered at 1100 degrees C due to formation of uniform, densely packed sintered compacts with grain size of 235.7 nm. Importantly, unusual linear correlation between grain size and relative density was observed in our experiment, and a cut-off point exists at 85.6% of TD. The kinetic analysis revealed that surface diffusion is responsible for the mass transport during the initial sintering stage. (C) 2015 Elsevier Ltd. All rights reserved.
关键词Spherical Shape Nanosized Tungsten Sintering Microstructure Hardness
文章类型Article
学科领域Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS标题词Science & Technology ; Technology
DOI10.1016/j.ijrmhm.2015.10.007
URL查看原文
收录类别SCI
语种英语
关键词[WOS]GRAIN-GROWTH ; DENSIFICATION BEHAVIOR ; THERMAL PLASMA ; INITIAL-STAGE ; POWDERS ; SIZE ; PARTICLES ; COMPACTS ; OXYGEN
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
项目资助者Fund of State Key Laboratory of Multiphase Complex Systems(Y525021140)
WOS记录号WOS:000371187700006
引用统计
被引频次:5[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/122111/20695
专题研究所(批量导入)
通讯作者Hu, P
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,Hou, Guolin,et al. The sintering behavior of quasi-spherical tungsten nanopowders[J]. INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS,2016,56(APR):44-50.
APA Li, Baoqiang.,Sun, Zhiqiang.,Hou, Guolin.,Ding, Fei.,Hu, Peng.,...&Hu, P.(2016).The sintering behavior of quasi-spherical tungsten nanopowders.INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS,56(APR),44-50.
MLA Li, Baoqiang,et al."The sintering behavior of quasi-spherical tungsten nanopowders".INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS 56.APR(2016):44-50.
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