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MoSi2对Cf/SiC/Ni复合材料微观结构及吸波性能的影响
作者:武志红1 2 张路平1 郑海康1  倩1  悦1 
单位:(1. 西安建筑科技大学材料科学与工程学院 西安 710055  2. 中钢集团洛阳耐火材料研究院有限公司 先进耐火材料国家重点实验室 河南 洛阳 471039) 
关键词:水热反应法 碳纤维 碳化硅纳米线 吸波性能 
分类号:TM25
出版年,卷(期):页码:2020,48(4):0-0
DOI:
摘要:

 摘  要:以葡萄糖、Si粉、碳纤维为原料,镍为催化剂,采用水热反应?烧结法制备了Cf/SiC/Ni和Cf/MoSi2/SiC/Ni复合吸波材料。通过X射线衍射、扫描电子显微镜、波导法分别表征了Cf/SiC/Ni和Cf/MoSi2/SiC/Ni复合材料的相组成、微观结构和吸波特性。结果表明:Cf/SiC/Ni复合材料上生长的SiC纳米线稀疏且分布不均匀;厚度为1.5 mm时,在8.20 GHz处最小反射损耗为–14.61 dB,有效吸收带宽为0.23 GHz。Cf/MoSi2/SiC/Ni复合材料的碳纤维表面生长大量SiC纳米线,分布致密且均匀;厚度为2.0 mm时,在9.10 GHz时最小反射损耗为–34.14 dB,有效吸收带宽达2.18 GHz。与Cf/SiC/Ni复合材料相比,添加MoSi2的Cf/MoSi2/SiC/Ni复合材料吸波性能更好,说明MoSi2可有效改善Cf/SiC/Ni复合材料的微观结构及吸波性能。

基金项目:
国家自然科学基金项目(51974218);先进耐火材料国家重点实验室开放基金(SKLAR201905);西安建筑科技大学基础研究基金(JC1496)。
作者简介:
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