郝斌

• 1:唐山学院环境与化学工程系

摘要(Abstract)：

以硅粉为硅源,乙炔炭黑为碳源,通过微波加热的方法制备碳化硅。研究反应物密实度和反应物粒度对产物碳化硅粒度和形貌的影响,利用SEM和TEM等手段观察碳化硅的形貌。结果表明:采用自由堆积的乙炔炭黑和硅粉为反应物时,硅粉、碳粉表面存在的氧与其发生反应生成的Si O和CO,再通过气-气反应生成Si C晶须,生成产物包括Si C颗粒和晶须。当反应物加压后,生成的Si O与Si和C反应生成Si C颗粒,产物中只包括Si C颗粒。乙炔炭黑和硅粉反应过程中Si C通过扩散机制生成,碳颗粒的粒度决定了生成的Si C的粒度。

关键词(KeyWords)： 微波烧结;碳化硅;密实度;粒度

Abstract:

Keywords:

基金项目(Foundation): 河北省高等学校科学技术研究项目(Z2014016);; 唐山市科技计划项目(14130234B);; 唐山学院材料科学与工程重点学科(TSC2013003)

作者(Author): 郝斌

DOI: 10.13289/j.issn.1009-6264.2015.05.008

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