强化对硅基型芯性能的影响  

Effect of Reinforcement on Silica-Based Ceramic Core

作　　者：孙革[1] 张玲[1] 刘军和[2] 杜洪强[1] 

机构地区：[1]沈阳黎明航空发动机(集团)有限责任公司,辽宁沈阳110043 [2]中国人民解放军驻沈阳黎明发动机制造公司军事代表室,辽宁沈阳110043

出　　处：《铸造》2013年第5期440-442,共3页Foundry

摘　　要：采用热压注法制备氧化硅基陶瓷型芯,以硅酸乙酯水解液为高温强化剂、环氧树脂/聚酰胺为低温强化剂,研究了高低温强化对硅基陶瓷型芯的抗弯强度、热变形的影响,采用扫描电镜对型芯微观结构进行了表征。结果表明,随着强化时间增加,型芯的强度提高;高温强化将型芯的热变形量由1.10 mm降低到0.35 mm。The silica-based ceramic cores were prepared by hot pressing with hydrolyzed ethyl silicate as high temperature reinforcer, and epoxy/polyamide resin as the low-temperature enhancer. The bending strength and hot deformation was studied. Microstructure was characterized by scanning electron microscopy. The results show that bending strength increases with the time extending, and hot deformation is decreased from 1.10 mm to 0.35 mm by high temperature strengthening.

关 键 词：硅基陶瓷型芯 强化 强度 热变形量 

分 类 号：TG242.7[金属学及工艺—铸造]