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- Title
遗态SiC纤维织物结构陶瓷的制备及形成机理分析.
- Authors
姜凤阳; 刘江南; 王俊勃; 贺辛亥
- Abstract
为探索制备形状及结构可控的遗态功能材料,以苎麻纤维、树脂及硅粉为原料,通过模板转化法在不同温度下原位烧结制备出遗态SiC纤维织物结构陶瓷.利用X射线衍射仪(XRD)及扫描电镜(SEM)对陶瓷的成分及形貌进行表征,揭示陶瓷形成机制; 并测试陶瓷试样的密度、孔隙率及BET比表面积等性能指标.结果表明,遗态SiC纤维织物结构陶瓷属于低密度、高孔隙率的有序多孔陶瓷.纳米材料导致陶瓷的比表面积约31.68 m2/g,纤维织物结构SiC以溶解扩散机制形核长大,并受织物纤维空间取向的限制.通过该工艺可以制备出具有复杂形状和特殊结构的遗态材料. In order to investigate morph-genetic function materials with controlled shape and structure, taking ramie, silicon and phenolic resin as the materials, the fabric SiC ceramic was fabricated in different temperature by biological templates. The phase composition and morphology of ceramic were characterized and observed to reveal formation mechanism of SiC ceramic by XRD and SEM. And the density, porosity and BET specific surface area were also tested. The results show that morph-genetic SiC fabric ceramic belongs to ordered porous of low density and high apparent porosity. The specific surface area of fabric ceramic is about 31.68m2/g for nanomaterials. The fabric ceramic is formed by solution-diffusion-precipitation process taking carbon templates as direction. The nucleation and grown of SiC were restricted by temperature, ration of carbon and silicon. Morph-genetic ceramic with complex shape, special structure and functional properties can be fabricated by this method with effective and feasible process.
- Publication
Basic Sciences Journal of Textile Universities / Fangzhi Gaoxiao Jichu Kexue Xuebao, 2018, Vol 31, Issue 1, p1
- ISSN
1006-8341
- Publication type
Article
- DOI
10.13338/j.issn.1006-8341.2018.01.001