IMR OpenIR
Highly porous nano-SiC with very low thermal conductivity and excellent high temperature behavior
Wan, P; Wang, JY; Wang, JY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, High Performance Ceram Div, Shenyang 110016, Liaoning, Peoples R China.
2018-02-01
发表期刊JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
卷号38期号:2页码:463-467
摘要Highly porous nano-SiC is fabricated by partial sintering and decarburizing process using SiC nano-powders as starting materials and graphite flakes as pore forming agents. The prepared porous nano-SiC ceramics possess multiple pore structures, including well-distributed meso-pores in the skeleton and interconnected flakelike micro-pores. The samples prepared at 1800 degrees C have relatively low thermal conductivities of 5.61 similar to 0.25 W m(-1) K-1 with porosities of 55.5-76.1%. While the samples sintered at 1500 degrees C with porosities between 54.0% to 76.3% show very low thermal conductivities of 0.74 similar to 0.14 W m(-1) K-1, which is attributed to the integrated nano-scale phonon-scattering mechanisms and duplex pore structures. Porous nano-SiC ceramics also show good retention of elastic stiffness up to 1350 degrees C and low thermal conductivity at 1400 degrees C. Our results shed light on porous nano-SiC as a promising thermal insulator used in extreme thermal and chemical environments.; Highly porous nano-SiC is fabricated by partial sintering and decarburizing process using SiC nano-powders as starting materials and graphite flakes as pore forming agents. The prepared porous nano-SiC ceramics possess multiple pore structures, including well-distributed meso-pores in the skeleton and interconnected flakelike micro-pores. The samples prepared at 1800 degrees C have relatively low thermal conductivities of 5.61 similar to 0.25 W m(-1) K-1 with porosities of 55.5-76.1%. While the samples sintered at 1500 degrees C with porosities between 54.0% to 76.3% show very low thermal conductivities of 0.74 similar to 0.14 W m(-1) K-1, which is attributed to the integrated nano-scale phonon-scattering mechanisms and duplex pore structures. Porous nano-SiC ceramics also show good retention of elastic stiffness up to 1350 degrees C and low thermal conductivity at 1400 degrees C. Our results shed light on porous nano-SiC as a promising thermal insulator used in extreme thermal and chemical environments.
部门归属[wan, peng ; wang, jingyang] chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, shenyang 110016, liaoning, peoples r china ; [wan, peng] univ chinese acad sci, beijing 100049, peoples r china
关键词Silicon-carbide Ceramics Fabrication Microstructure Densification Scattering Strength Powders
学科领域Materials Science, Ceramics
资助者National Key R & D Program of China [2017YFB0703201]; Natural Science Foundation of China [5137225, 51772302]
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/321006/79557
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, High Performance Ceram Div, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式
GB/T 7714
Wan, P,Wang, JY,Wang, JY . Highly porous nano-SiC with very low thermal conductivity and excellent high temperature behavior[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2018,38(2):463-467.
APA Wan, P,Wang, JY,&Wang, JY .(2018).Highly porous nano-SiC with very low thermal conductivity and excellent high temperature behavior.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,38(2),463-467.
MLA Wan, P,et al."Highly porous nano-SiC with very low thermal conductivity and excellent high temperature behavior".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 38.2(2018):463-467.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wan, P]的文章
[Wang, JY]的文章
[Wang, JY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, High Performance Ceram Div, Shenyang 110016, Liaoning, Peoples R China.]的文章
百度学术
百度学术中相似的文章
[Wan, P]的文章
[Wang, JY]的文章
[Wang, JY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, High Performance Ceram Div, Shenyang 110016, Liaoning, Peoples R China.]的文章
必应学术
必应学术中相似的文章
[Wan, P]的文章
[Wang, JY]的文章
[Wang, JY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, High Performance Ceram Div, Shenyang 110016, Liaoning, Peoples R China.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。