Microstructure and Properties of Melt-Infiltrated SiCf/SiC Ceramic Matrix Composite

HU Jianbao; YANG Jinshan; ZHANG Xiangyu; DING Yusheng; ZHOU Haijun; GAO Le; WANG Zhen; HE Ping; DONG Shaoming

doi:10.16080/j.issn1671-833x.2018.14.016

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Microstructure and Properties of Melt-Infiltrated SiCf/SiC Ceramic Matrix Composite

更新时间：2025-10-30

- Microstructure and Properties of Melt-Infiltrated SiCf/SiC Ceramic Matrix Composite
- Aeronautical Manufacturing Technology Vol. 61, Issue 14, Pages: 16-21(2018)
- 作者机构：
  
  1. 中国科学院上海硅酸盐研究所结构陶瓷与复合材料工程研究中心,上海,201800
  2. 上海基因组工程研究院,上海,201800
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2018.14.016
  CLC：
- Published：2018
- 稿件说明：
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胡建宝1，杨金山1，张翔宇1，丁玉生1，周海军1，高乐1，王震1，何平1，董绍明1，2. 高致密反应烧结SiCf /SiC复合材料的微观结构与性能*[J]. 航空制造技术, 2018, 61(14): 16-21.

HU Jianbao1, YANG Jinshan1, ZHANG Xiangyu1, DING Yusheng1, ZHOU Haijun1, GAO Le1, WANG Zhen1, HE Ping1, DONG Shaoming1,2. Microstructure and Properties of Melt-Infiltrated SiCf/SiC Ceramic Matrix Composite. Aeronautical Manufacturing Technology, 2018, 61(14): 16-21.
胡建宝1，杨金山1，张翔宇1，丁玉生1，周海军1，高乐1，王震1，何平1，董绍明1，2. 高致密反应烧结SiCf /SiC复合材料的微观结构与性能*[J]. 航空制造技术, 2018, 61(14): 16-21. DOI： 10.16080/j.issn1671-833x.2018.14.016.

HU Jianbao1, YANG Jinshan1, ZHANG Xiangyu1, DING Yusheng1, ZHOU Haijun1, GAO Le1, WANG Zhen1, HE Ping1, DONG Shaoming1,2. Microstructure and Properties of Melt-Infiltrated SiCf/SiC Ceramic Matrix Composite. Aeronautical Manufacturing Technology, 2018, 61(14): 16-21. DOI： 10.16080/j.issn1671-833x.2018.14.016.

摘要

SiCf/SiC 陶瓷基复合材料是航空发动机热结构部件的关键材料。基于国产KD-II 碳化硅纤维，利用反应熔渗工艺制备了高致密的SiCf/SiC 复合材料，研究了其微观结构、常温/高温力学性能、热物理性能和高温长时氧化稳定性。反应熔渗制备的SiCf/SiC 显气孔率仅为1.6%，室温弯曲强度为（521±89）MPa，1200℃高温弯曲强度为（576±22）MPa，呈非脆性断裂特征，具有优异的高温力学稳定性。厚度方向常温热导率高达41.7W/（m · K），1300℃热导率为18.9W/（m · K）。SiCf/SiC 复合材料经1200℃氧化1000h 仍保持非脆性断裂特征，弯曲强度为（360±54）MPa，仅下降19%，仍保持非脆性断裂特征。反应烧结制备的SiCf/SiC 复合材料具备优异的耐高温抗氧化性能，有望满足航空发动机热端部件对SiCf/SiC 陶瓷基复合材料的应用需求。

Abstract

SiCf/SiC ceramic matrix composite is the key material of thermal structural component of turbine. Highly dense KD-II SiC fiber reinforced SiCf/SiC composite was fabricated by melt infiltration of silicon. The microstructure

mechanical properties

thermal properties and oxidation resistance under 1200℃ or above were studied. The porosity of meltinfiltrated SiCf/SiC is only 1.6%. The flexural strength of SiCf/SiC composite at room temperature and 1200℃ are (521±89) and (576±22)MPa

respectively. SiCf/SiC composite shows non-brittle failure characteristic. The thermal conductivities of thickness direction at room temperature and 1300℃ are 41.7W/(m · K) and 18.9W/(m · K). The flexural strength of meltinfiltrated SiCf/SiC composite oxidized for 1000h at 1200℃ is (360±54)MPa

which is only decreased by 19%. The meltinfiltrated SiCf/SiC composite possess excellent oxidation stability

which is promised to be used as thermal structural material in turbine energy.

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