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The effects of alumina reinforcement and nickel activated sintering on nanosized tungsten matrix
Li, Baoqiang1,2; Sun, Zhiqiang1,2; Hou, Guolin1,2; Ding, Fei1; Hu, Peng1; Yuan, Fangli1
2017-01-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume692Issue:JANPages:420-426
Abstract

In this work, the effects of aluminum oxide reinforcement and Ni activated sintering on nanosized tungsten matrix was investigated by analysis obtained W compacts sintered at 1400 degrees C for 1 h. Experimental results show that the effect of alumina reinforcement on tungsten compacts exhibit improved mechanical strength with high densification at relatively low sintering temperature during nickel activated sintering process. The densification of sintered compacts could be effectively enhanced with Ni addition, and near-full dense samples (98.0% of theoretical density) could be obtained by 0.6 wt% Ni adding. Furthermore, the grain growth of sintered compacts could be restrained from 10.55 mu m to 2.57 mu m with ultrafine Al2O3 addition, which results in about 32% improvement of Vickers microhardness value of 515 +/- 7 (VHN) compared to that of W-Ni composite without Al2O3 addition. The results well illustrate the advantage of alumina reinforcement of nanosized tungsten matrix under nickel activated sintering process for their structural applications. (C) 2016 Elsevier B.V. All rights reserved.

KeywordNanosized Tungsten Al2o3 Reinforcement Activated Sintering Microstructure Hardness
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jallcom.2016.09.081
Indexed BySCI
Language英语
WOS KeywordDISPERSION-STRENGTHENED TUNGSTEN ; FINE-GRAINED TUNGSTEN ; MECHANICAL-PROPERTIES ; DOPED TUNGSTEN ; COMPOSITES ; TEMPERATURE ; FABRICATION ; PLASMA ; DENSIFICATION ; PARTICLES
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China (NSFC)(11535003 ; Fund of State Key Laboratory of Multiphase Complex Systems(Y525021140) ; 11575228)
WOS IDWOS:000386231200054
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21577
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.UCAS, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, Baoqiang,Sun, Zhiqiang,Hou, Guolin,et al. The effects of alumina reinforcement and nickel activated sintering on nanosized tungsten matrix[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,692(JAN):420-426.
APA Li, Baoqiang,Sun, Zhiqiang,Hou, Guolin,Ding, Fei,Hu, Peng,&Yuan, Fangli.(2017).The effects of alumina reinforcement and nickel activated sintering on nanosized tungsten matrix.JOURNAL OF ALLOYS AND COMPOUNDS,692(JAN),420-426.
MLA Li, Baoqiang,et al."The effects of alumina reinforcement and nickel activated sintering on nanosized tungsten matrix".JOURNAL OF ALLOYS AND COMPOUNDS 692.JAN(2017):420-426.
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