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反应熔渗制备C/SiC复合材料的微观组织与性能研究
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航天特种材料及工艺技术研究所

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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:

    采用反应熔渗法将熔融Si渗入C/C多孔体中制备了C/SiC复合材料。研究了包埋式布硅对C/C多孔体不同位置毛细吸附行为的影响以及对制备C/SiC复合材料密度的影响。反应熔渗制备的C/SiC复合材料内部存在残余的游离硅,经过除硅处理后游离硅显著减少,但其致密化程度有所降低,同时其弯曲强度明显下降。

    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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王鹏,于艺,金鑫,于新民,刘俊鹏,张宝鹏.反应熔渗制备C/SiC复合材料的微观组织与性能研究[J].稀有金属材料与工程,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.]
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  • 收稿日期:2019-09-19
  • 最后修改日期:2019-10-24
  • 录用日期:2019-11-12
  • 在线发布日期: 2020-11-04
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