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Preparation of porous YB4 ceramics using a combination of in-situ borothermal reaction and high temperature partial sintering
Guo, Qiangqiang; Xiang, Huimin; Sun, Xin; Wang, Xiaohui; Zhou, Yanchun; yczhou@imr.ac.cn
2015
发表期刊JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
卷号35期号:13页码:3411-3418
摘要A novel method for preparing high porosity and high strength porous YB4 ceramics was developed combining the in-situ borothermal reaction synthesis and high temperature partial sintering. Since pores could be produced by gasses such as B2O3 and CO generated in the reaction between Y2O3 and B4C, high porosity porous YB4 ceramics were obtained after synthesis at 1650 degrees C and sintering at 1780 degrees C for 2 h in vacuum, respectively. Using this new and simple method, porous YB4 with controllable porosities of 60-70% and compressive strengths of 7.4-19.9 MPa were obtained depending on the green density. The phase composition, porosity, pore size distribution and compressive behavior of the porous YB4 ceramics were systematically investigated. The effects of vacuum on synthesis of YB4 and pore forming mechanism were also discussed in detail. (C) 2015 Elsevier Ltd. All rights reserved.
部门归属[guo, qiangqiang ; xiang, huimin ; sun, xin ; zhou, yanchun] aerosp res inst mat & proc technol, sci & technol adv funct composite lab, beijing 100076, peoples r china ; [wang, xiaohui] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词Yb4 Ultra-high Temperature Ceramics Porous Materials Strength Borothermal Reaction
资助者National Outstanding Young Scientist Foundation [59925208]; National Natural Science Foundation of China [U1435206]
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75077
专题中国科学院金属研究所
通讯作者yczhou@imr.ac.cn
推荐引用方式
GB/T 7714
Guo, Qiangqiang,Xiang, Huimin,Sun, Xin,et al. Preparation of porous YB4 ceramics using a combination of in-situ borothermal reaction and high temperature partial sintering[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2015,35(13):3411-3418.
APA Guo, Qiangqiang,Xiang, Huimin,Sun, Xin,Wang, Xiaohui,Zhou, Yanchun,&yczhou@imr.ac.cn.(2015).Preparation of porous YB4 ceramics using a combination of in-situ borothermal reaction and high temperature partial sintering.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,35(13),3411-3418.
MLA Guo, Qiangqiang,et al."Preparation of porous YB4 ceramics using a combination of in-situ borothermal reaction and high temperature partial sintering".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 35.13(2015):3411-3418.
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