电熔刚玉对硅基陶瓷型芯性能的影响  

Effect of Fused Corundum on Properties of Silicon-Based Ceramic Core

作　　者：周宇豪 玄伟东[1] 段方苗 白小龙 任兴孚[1] 任忠鸣[1] Zhou Yuhao;Xuan Weidong;Duan Fangmiao;Bai Xiaolong;Ren Xingfu;Ren Zhongming(State Key Laboratory of Advanced Special Steel,Department of Material Science and Engineering,Shanghai University,Shanghai 200444,China;China United Heavy Duty Turbine Technology Co.,Ltd,Beijing 100061,China)

机构地区：[1]上海大学材料科学与工程学院、省部共建高品质特殊钢冶金与制备国家重点实验室,上海200444 [2]中国联合重型燃气轮机技术有限公司,北京100061

出　　处：《稀有金属材料与工程》2023年第4期1396-1402,共7页Rare Metal Materials and Engineering

基　　金：国家科技重大专项(2017-VII-0008-0102);国家自然科学基金(92060104);上海市科委项目(20511107700);中国重燃项目(F095)。

摘　　要：以石英玻璃粉为原料,石蜡为增塑剂,添加质量分数0%~30%的电熔刚玉为矿化剂,通过热压注法成功制备了硅基陶瓷型芯,研究了电熔刚玉含量对方石英析晶和硅基陶瓷型芯综合性能的影响。结果表明:随着电熔刚玉含量的增加,样品的收缩率逐渐增加,气孔率先减小后增大,致密化程度增加;而抗弯强度和高温抗蠕变性能呈现先增强后减弱的趋势。当添加10%电熔刚玉时,样品表现出优良的综合性能,收缩率为1.02%,气孔率为20.91%,体积密度为1.7083 g/cm^(3),室温和高温抗弯强度分别为14.83和20.96 MPa,高温挠度为0.39 mm。In order to study the effect of fused corundum content on properties of silicon-based ceramic cores,the ceramic cores with different amount of fused corundum(0%~30%)were prepared by the hot injection method,where quartz glass powder was used as raw materials,fused corundum as mineralizer,and the ceramic casting wax as the plasticizer.The results show that with the increase of fused corundum content,the shrinkage of the samples increases gradually,the porosity decreases at first and then increases,resulting in the higher degree of densification,while the bending strength and high temperature creep resistance are falling after firstly climbing.When 10%fused corundum is added,the sample shows excellent comprehensive properties,with a shrinkage of 1.02%,a porosity of 20.91%,a bulk density of 1.7083 g/cm^(3),a bending strength of 14.83 and 20.96 MPa at room temperature and high temperature,and a high temperature deflection of 0.39 mm.

关 键 词：陶瓷型芯 电熔刚玉 方石英 力学性能 

分 类 号：TQ174[化学工程—陶瓷工业]