吴海华,方灿,李亚峰,刘文斌,黄才华,叶喜葱,钟强

• 1:三峡大学机械与动力学院石墨增材制造宜昌市重点实验室

摘要(Abstract)：

首先利用选择性激光烧结技术快速制备三维多孔石墨骨架,随后对其进行二次固化、碳化、真空压力浸渍硅溶胶等后处理,再将低粘度高固相水基陶瓷浆料注入其中,经冷冻干燥、高温烧结后获得三维互穿网络结构石墨/莫来石陶瓷复合材料。结果表明,对多孔石墨骨架进行浸渍增强改性处理以及控制陶瓷坯体的干燥收缩率和烧成收缩率有利于保证三维复合材料的结构完整性,最终成功地制备出了抗压强度为28.28 MPa、导热系数为2.06 W·m~(-1)·K~(-1)、密度仅为1.23 g/cm~3的互穿网络结构石墨/莫来石陶瓷复合材料,其兼具有石墨相和陶瓷相的各自优点。

关键词(KeyWords)： 石墨/莫来石陶瓷复合材料;三维互穿网络结构;选择性激光烧结成型;凝胶注模成型;综合性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51575313);; 湖北省技术创新专项重大项目(2019AAA164)

作者(Author): 吴海华,方灿,李亚峰,刘文斌,黄才华,叶喜葱,钟强

DOI: 10.13289/j.issn.1009-6264.2020-0421

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