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Synthesis and characterization of porous Y2SiO5 with low linear shrinkage, high porosity and high strength
Wu, Z; Sun, LC; Wang, JY; Wang, JY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Highperformance Ceram Div, Shenyang 110016, Peoples R China.
2016-10-01
发表期刊CERAMICS INTERNATIONAL
ISSN0272-8842
卷号42期号:13页码:14894-14902
摘要The emerging porous Y2SiO5 ceramic is regarded as a promising candidate of thermal insulator owing to its very low thermal conductivity. However, recent works on porous Y2SiO5 are confronted with severe problems such as large linear shrinkage (18.51-20.8%), low porosity (47.74-62%) and low strength (24.45-16.51 MPa) at high sintering temperatures (1450-1500 degrees C). In this work, highly porous Y2SiO5 ceramic with low shrinkage and excellent high-temperature strength was fabricated by in-situ foam-gelcasting method at 1550 degrees C. The as-prepared sample has unique multiple pore structures, low linear shrinkages of 6.3-4.5%, controllable high porosities of 60.7-88.4%, high compressive strengths of 38.2-0.90 MPa, and low thermal conductivities of 0.126-0.513 W/(m K) (porosity: 87.1-60.2%). The effects of relative density on relative strength, as well as porosity on thermal conductivity were quantitatively discussed. The present results indicate that porous Y2SiO5 is the potential high-temperature thermal insulation material of light weight, low thermal conductivity, and high strength. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
部门归属[wu, zhen ; sun, luchao ; wang, jingyang] chinese acad sci, inst met res, shenyang natl lab mat sci, highperformance ceram div, shenyang 110016, peoples r china
关键词Porous Y2sio5 Ceramic Low Linear Shrinkage High Porosity High-temperature Strength Low Thermal Conductivity
学科领域Materials Science, Ceramics
资助者National Natural Science Foundation of China [51372252, 51402313]
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/321006/76269
专题中国科学院金属研究所
通讯作者Wang, JY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Highperformance Ceram Div, Shenyang 110016, Peoples R China.
推荐引用方式
GB/T 7714
Wu, Z,Sun, LC,Wang, JY,et al. Synthesis and characterization of porous Y2SiO5 with low linear shrinkage, high porosity and high strength[J]. CERAMICS INTERNATIONAL,2016,42(13):14894-14902.
APA Wu, Z,Sun, LC,Wang, JY,&Wang, JY .(2016).Synthesis and characterization of porous Y2SiO5 with low linear shrinkage, high porosity and high strength.CERAMICS INTERNATIONAL,42(13),14894-14902.
MLA Wu, Z,et al."Synthesis and characterization of porous Y2SiO5 with low linear shrinkage, high porosity and high strength".CERAMICS INTERNATIONAL 42.13(2016):14894-14902.
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