二次炭粒对PCRBSC显微结构的影响

发布时间：2018-02-20 22:49

本文关键词： 二次炭粒纯碳反应烧结 SiC 显微结构　出处：《中国陶瓷》2016年07期 　论文类型：期刊论文

【摘要】：用二次炭粒制备了纯碳反应烧结碳化硅(PCRBSC),研究了二次炭粒的密度、粒径及颗粒粘结状态对烧结体显微结构的影响。结果表明:当二次炭粒的密度为0.844 g/cm~3、粒径小于37μm时,烧结体中几乎没有fC的存在,但二次炭粒密度过低会导致fSi含量增加;加入粘结剂可以改善二次炭粒高温时的粘结强度,防止烧结开裂而出现硅线。
[Abstract]:Pure carbon reaction sintering silicon carbide (PCRBSCS) was prepared from secondary carbon particles. The effects of the density, particle size and particle bonding state of secondary carbon particles on the microstructure of the sintered particles were studied. The results showed that when the density of secondary carbon particles was 0.844 g / cm ~ (-3), the particle size was less than 37 渭 m. There is almost no fC in the sintered body, but the low density of secondary carbon particle will lead to the increase of fSi content, and the addition of binder can improve the bond strength of secondary carbon particle at high temperature and prevent the silicon wire from cracking.
【作者单位】：清远职业技术学院机电工程学院;武汉理工大学硅酸盐材料与工程教育部重点实验室;
【分类号】：TQ174.1

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