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反應熔滲制備C/SiC復合材料的微觀組織與性能研究
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航天特種材料及工藝技術研究所

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Microstructure and Properties of C/SiC Composites Prepared by Reactive Melt Infiltration
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Research Institute of Aerospace Special Materials and Processing Technology,Beijing

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    摘要:

    采用反應熔滲法將熔融Si滲入C/C多孔體中制備了C/SiC復合材料。研究了包埋式布硅對C/C多孔體不同位置毛細吸附行為的影響以及對制備C/SiC復合材料密度的影響。反應熔滲制備的C/SiC復合材料內(nèi)部存在殘余的游離硅,經(jīng)過除硅處理后游離硅顯著減少,但其致密化程度有所降低,同時其彎曲強度明顯下降。

    Abstract:

    C/SiC composites were prepared by reactive melt infiltration (RMI) of molten Si into the C/C porous preform. Influences of C/C porous preform embedded in silicon powder at different positons on the capillary absorption behaviors were investigated. Lots of free Si can be found inside of C/SiC composites prepared by RMI. The free Si was decreased significantly after desilication treatment of C/SiC composite, the composite density and flexural strength decreased as well.

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王鵬,于藝,金鑫,于新民,劉俊鵬,張寶鵬.反應熔滲制備C/SiC復合材料的微觀組織與性能研究[J].稀有金屬材料與工程,2020,49(10):3382~3387.[Wang Peng, Yu Yi, Jin Xin, Yu Xinmin, Liu Junpeng, Zhang Baopeng. Microstructure and Properties of C/SiC Composites Prepared by Reactive Melt Infiltration[J]. Rare Metal Materials and Engineering,2020,49(10):3382~3387.]
DOI:10.12442/j. issn.1002-185X.20190775

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  • 收稿日期:2019-09-19
  • 最后修改日期:2019-10-24
  • 錄用日期:2019-11-12
  • 在線發(fā)布日期: 2020-11-04
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