硅酸盐通报2024，Vol.43Issue(6)：2250-2255,6.
Al2O3粒度对CA6轻质陶瓷材料结构与性能的影响
Effects of Al2O3 Particle Sizes on Microstructure and Properties of CA6 Lightweight Ceramic Materials
摘要
Abstract
In order to study the effects of Al2O3 particle sizes on microstructure and properties of CA6 lightweight ceramic materials,lightweight calcium carbonate with an average particle size of 15 μm and α-Al2O3 with average particle sizes of 80,61,45 and 38 μm were used as calcium oxide and alumina sources,respectively.CA6 lightweight ceramic materials were prepared by foaming method combined with in-situ sintering technology after being heated at 1 550 ℃ for 5 h.Effects of Al2O3 starting materials with different particle sizes on their physical properties,phase composition and microstructure were investigated.The results show that with the decrease of α-Al2O3 particle size,the linear shrinkage,bulk density and thermal conductivity of CA6 lightweight ceramic materials gradually decreases,while their apparent porosity gradually increases and their compressive strength increases firstly and then decreases.Comprehensively considered,the specimen prepared by α-Al2O3 with an average particle size of 45 μm as alumina source has better comprehensive performance,and its apparent porosity,thermal conductivity and compressive strength are 87.8％,0.149 W·m-1·K-1 and 0.29 MPa,respectively,which can better meet the needs of application.关键词
CA6轻质陶瓷材料/Al2O3粒度/物相组成/显微结构/压缩强度/热导率Key words
CA6 lightweight ceramic material/Al2O3 particle size/phase composition/microstructure/compressive strength/thermal conductivity分类
化学化工引用本文复制引用
申天姿,李文凤,郭会师,曹金金,侯永改,杜娟..Al2O3粒度对CA6轻质陶瓷材料结构与性能的影响[J].硅酸盐通报,2024,43(6):2250-2255,6.基金项目
国家自然科学基金(5180021223) （5180021223）
河南省重点科技攻关项目(232102231046,232102231051) （232102231046,232102231051）
河南工业大学青年骨干教师培育计划(21421211) （21421211）
