摘要
以石英玻璃粉为基体,电熔莫来石为矿化剂,石蜡为增塑剂,通过热压注法制备硅基陶瓷型芯,研究了电熔莫来石添加量对硅基陶瓷型芯综合性能的影响。研究结果表明:随着电熔莫来石含量的增加,样品的室温抗弯强度、高温抗弯强度、高温挠度逐渐降低,收缩率随电熔莫来石含量的增加先减小后增大,显气孔率随电熔莫来石含量的增加先增大后减小。当电熔莫来石的添加量为10%时,型芯样品的综合性能最佳,其收缩率为0.83%,显气孔率为31.49%,体积密度为1.50 g/cm^3,室温抗弯强度为12.28 MPa,高温强度为18.17 MPa,高温挠度为0.95 mm。
In order to study the effect of fused mullite content on the properties of silica ceramic cores,the ceramic cores with different amounts of fused mullite were prepared by the hot injection method,where quartz glass powder was used as base materials,fused mullite as additive,and the ceramic casting wax as the plasticizer.The results show that,with an increase in fused mullite content,the room temperature strength,high temperature strength,high temperature deflection of samples gradually decreased,the shrinkage rate decreased first and then increased,the apparent porosity increased first and then decreased.The results also reveals that the ceramic core with 10wt.%fused mullite content displays a combination of the best properties,among which the shrinkage rate is 0.83%,the apparent porosity is 31.49%,the bulk density is 1.50 g/cm3,the room temperature strength is 12_28 MPa,the high temperature strength is 18.17 MPa,and the high temperature deflection is 0.95 mm.
作者
李寒松
玄伟东
潘文轩
任兴孚
任忠鸣
LI Han-song;XUAN Wei-dong;PAN Wen-xuan;REN Xing-fu;REN Zhong-ming(AECC Commercial Aircraft Engine Co.,Ltd.,Shanghai 200241,China;Department of Material Science and Engineering,State Key Laboratory of Advanced Special Steels,Shanghai University,Shanghai 200444,China)
出处
《铸造》
CAS
北大核心
2020年第8期861-865,共5页
Foundry
基金
国家两机重大专项项目(2017-Ⅶ-0008-0102)。
关键词
硅基陶瓷型芯
矿化剂
电熔莫来石含量
综合性能
silicon-based ceramic cores
mineralizer
fused mullite
comprehensive properties