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- LI Cheng
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS)
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- XIE Ruobing
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS)
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- WANG Mouhua
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS)
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- SUN Baoxing
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS)
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- LEI Guanhong
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS)
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- HUANG Qing
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS)
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- LI Jianjian
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS)
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- ZHU Yongqi
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS)
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- LIU Renduo
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS)
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- LEI Qi
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS)
抄録
<p>In this work, we study the impact of pyrolysis temperature and time on the crystalline structure of lab made silicon carbide (SiC) fibers and their mechanical properties. The polycrystalline structure and the characteristic length scales of β-SiC in fibers were characterized with X-ray diffraction, transmission electron microscope and synchrotron small angle X-ray scattering. The sizes of crystallites, particles and interparticle distance all increase as pyrolysis temperature or time increases while the crystallinity nearly remains constant, indicating SiC crystals in the fiber grow by absorbing the surrounding small crystals. The crystal growth follows the Ostwald ripening when pyrolysis temperature reaches 1500°C. At this temperature, longer pyrolysis time seems to reduce the tensile strength, but still keep increasing the modulus. The stiffness is possibly associated with the growth of particle size, interparticle distance and the size of voids in fibers.</p>
収録刊行物
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 127 (2), 117-122, 2019-02-01
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390845713049386624
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- NII論文ID
- 130007587655
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- ISSN
- 13486535
- 18820743
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可