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Biomimetic porous silicon oxycarbide ceramics with improved specific strength and efficient thermal insulation

文献类型：期刊论文

作者Zhang, Zhuoqing2,3; Li, Jinghan1; Cao, Lei2,3; Shi, Yu1; Yang, Huajie2,3; Yang, Rui2,3; Xie, Fan4; Zhang, Xing2,3
刊名JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
出版日期2024
卷号168页码:185-193
关键词Thermal insulation Light weight Macro-porous ceramics SiOC
ISSN号1005-0302
DOI10.1016/j.jmst.2023.06.006
通讯作者Xie, Fan(fanfan.zd@163.com) ; Zhang, Xing(xingzhang@imr.ac.cn)
英文摘要Considering the challenge of aerodynamic heating, the development of high-performance insulating ceramic materials with lightweight and low thermal conductivity is crucially important for aerospace vehicles to achieve flight at high speed for a long time. In this work, macro-porous silicon oxycarbide (SiOC) ceramics with directional pores (DP-SiOC) (mean pore size of 88.1 & mu;m) were prepared using polysiloxane precursors via freeze casting and photocrosslinking, followed by pyrolysis. The DP-SiOC samples were lightweight (density & SIM;0.135 g cm -3 ) with a porosity of 90.4%, which showed good shapability through the molding of polysiloxane precursors. The DP-SiOC samples also exhibited an ultra-low thermal conductivity of 0.048 W(m K) -1 at room temperature, which can also withstand heat treatment at 1200 & DEG;C for 1 h. In addition, scaffolds with triply periodic minimal surfaces (TPMS) were fabricated using digital light processing (DLP) printing, which was further filled with polysiloxane precursors for increasing the strength of DP-SiOC. The TPMS scaffolds filled with macro-porous SiOC ceramics (TPMS-DP-SiOC) showed good integration between TPMS and macro-pore structures, which had a porosity & SIM;75% and high specific strength of 9.73 x 10 3 N m kg -1 . The thermal conductivity of TPMS-DP-SiOC samples was 0.255 W(m K) -1 at room temperature. The biomimetic TPMS-DP-SiOC ceramics developed in this study are likely used for thermal protection systems.& COPY; 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目CAS Interdisciplinary Inno- vation Team Project ; Chinese Academy of Sciences, China ; [JCTD-2020-10]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001053052300001
出版者JOURNAL MATER SCI TECHNOL
资助机构CAS Interdisciplinary Inno- vation Team Project ; Chinese Academy of Sciences, China
源URL[http://ir.imr.ac.cn/handle/321006/179071]  
专题金属研究所_中国科学院金属研究所
通讯作者Xie, Fan; Zhang, Xing
作者单位1.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Liaoning, Peoples R China
4.Shenyang Aircraft Design & Res Inst, Shenyang 110035, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Zhuoqing,Li, Jinghan,Cao, Lei,et al. Biomimetic porous silicon oxycarbide ceramics with improved specific strength and efficient thermal insulation[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2024,168:185-193.
APA Zhang, Zhuoqing.,Li, Jinghan.,Cao, Lei.,Shi, Yu.,Yang, Huajie.,...&Zhang, Xing.(2024).Biomimetic porous silicon oxycarbide ceramics with improved specific strength and efficient thermal insulation.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,168,185-193.
MLA Zhang, Zhuoqing,et al."Biomimetic porous silicon oxycarbide ceramics with improved specific strength and efficient thermal insulation".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 168(2024):185-193.

入库方式： OAI收割

来源：金属研究所

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