氧化钇矿化剂对氧化铝基陶瓷型芯性能的影响  

Effect of Yttria Mineralizer on Properties of Alumina-Based Ceramic Core

作　　者：刘孝福[1] 娄延春[1] 于波[1] 苏贵桥[1] 李长春[1] 关洋[1] 

机构地区：[1]沈阳铸造研究所高端装备轻合金铸造技术国家重点实验室,辽宁沈阳110022

出　　处：《铸造》2016年第11期1051-1055,共5页Foundry

基　　金：基金项目:工信部工业强基工程"航空发动机及重型燃气轮机耐高温叶片精密铸造及陶瓷涂层工艺"

摘　　要：电熔刚玉具有良好的耐高温性能及化学惰性,是制备氧化铝陶瓷型芯的优良原材料。本文采用电熔刚玉粉为主体材料,研究了矿化剂氧化钇的不同含量对氧化铝基陶瓷型芯烧成收缩率、抗弯强度、高温变形量等性能的影响。分析了氧化钇对氧化铝陶瓷型芯的矿化机理。Electro-fused corundum is a kind of promising raw material for preparing alumina ceramic core because of it＇s excellent high temperature resistance and chemical inertness. In this paper, electro-fused corundum is used as main material to study the effect of different yttria powder contents on properties of alumina-based ceramic core, such as sintering shrinkage, flexural strength, high temperature deformation, and so on. Mineralizer mechanism ofyttria on alumina ceramic core is analyzed.

关 键 词：氧化铝型芯 矿化剂 氧化钇 

分 类 号：TG242.7[金属学及工艺—铸造]