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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
Source PublicationINTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
ISSN0263-4368
Volume56Issue:APRPages:44-50
AbstractIn 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.
KeywordSpherical Shape Nanosized Tungsten Sintering Microstructure Hardness
SubtypeArticle
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ijrmhm.2015.10.007
URL查看原文
Indexed BySCI
Language英语
WOS KeywordGRAIN-GROWTH ; DENSIFICATION BEHAVIOR ; THERMAL PLASMA ; INITIAL-STAGE ; POWDERS ; SIZE ; PARTICLES ; COMPACTS ; OXYGEN
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationFund of State Key Laboratory of Multiphase Complex Systems(Y525021140)
WOS IDWOS:000371187700006
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20695
Collection研究所(批量导入)
Corresponding AuthorHu, P
Affiliation1.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
Recommended Citation
GB/T 7714
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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