摘要
讨论固相含量高达 50vol%的SiC水基悬浮体的制备和凝胶注模成型。SiC粉末适于在碱性水溶液中分散 ,但溶液的 pH值必须适当。SiC料浆的流变性同时受球磨时间和固相含量的影响。通过将料浆进行抽真空除泡并控制其 pH值 。
WT5BZ]Preparing and gelcasting of high concentrated aqueous silicon carbide suspension with 50vl.% solids loading are discussed in this paper. It is found that SiC powder is suitable for being suspended at basic solution, and a proper pH value should be controlled for it.The rheological property of SiC suspension is also effected by milling time and solids loading.However, by vacuum pumping and controlling pH value of the suspensions, complicate shapes of uniform SiC green bodies without pores are prepared.
出处
《高技术通讯》
EI
CAS
CSCD
2000年第7期100-103,共4页
Chinese High Technology Letters
基金
863计划!(8637150060100)
国家自然科学基金!(59872018)
关键词
凝胶
冰模成型
碳化硅
复合陶瓷
Gelcasting, Silicon carbide, H_2, Free Si, pH value
