CaCO3加入量对刚玉浇注料烧结后性能和显微结构的影响
Effects of CaCO3 Addition Amount on Properties and Microstructure of Corundum Castables after Sintering
摘 要
以板状刚玉颗粒、电熔白刚玉粉、纯铝酸钙水泥、氧化铝微粉、分析纯CaCO3等为原料制备了刚玉浇注料,研究了CaCO3加入量和烧结温度对烧结后刚玉浇注料常温性能、物相组成及显微结构的影响.结果表明:随烧结温度的升高和CaCO3加入量的增多,浇注料中CA6生成量增多,且其晶粒逐渐长大呈板片状结构,产生体积膨胀,导致烧结后浇注料的显气孔率和线变化率升高,抗弯强度和耐压强度降低.
铝酸钙
刚玉浇注料
显微结构
calcium carbonate
calcium aluminate
corundum castables
microstructure
Abstract
Corundum Castables were prepared using tabular corundum particles,white corundum fines by electric smelting,cement of pure calcium aluminate,ultrafine alumina,CaCO3 powders as raw materials.Effects of CaCO3 powders addition and sintering temperature on the physical properties,phase composition and microstructure of sintered corundum castables were investigated.The results show that when CaCO3 addition amount increased and sintering temperature rose,the production of CA6 whose grains grew up with a plate-like structure increased,generating volume expansion followed by the increase of apparent porosity and linear change rate,and the decrease of bending strength and crushing strength.
中图分类号 TQ175
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(U1204505);河南省高校青年骨干教师计划项目(2012GGJS-001)
收稿日期 2013/12/10
修改稿日期 2014/9/15
网络出版日期
作者单位点击查看
备注吴然(1987-),男,河南信阳人,硕士研究生.
引用该论文: WU Ran,JIA Quan-li,SUN Xiao-gai,ZHANG Ju,YE Fang-bao. Effects of CaCO3 Addition Amount on Properties and Microstructure of Corundum Castables after Sintering[J]. Materials for mechancial engineering, 2015, 39(2): 38～41
吴然,贾全利,孙小改,张举,叶方保. CaCO3加入量对刚玉浇注料烧结后性能和显微结构的影响[J]. 机械工程材料, 2015, 39(2): 38～41
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】李有奇,李亚伟,汪明亮,等.CaO含量对刚玉质浇注料性能与显微结构的影响［J］.耐火材料,2005,39(4):270-273.
【2】LI Zhi-gang,YE Fang-bao,ZHANG Yu.Effects of nano calcium carbonate on the properties of corundum-based castables ［J］.Industrial Ceramics,2009,29(1):31-37.
【3】甘明亮,燕飞,贺中央,等.纳米碳酸钙加入量对刚玉质浇注料性能的影响［J］.武汉科技大学学报,2009,32(2):188-192.
【4】李志刚,叶方保,张宇.铝酸钙水泥对刚玉基浇注料性能的影响［J］.耐火材料,2007,41(5):336-340.
【5】崔洪梅,刘宏,王继扬,等.纳米粉体的团聚与分散［J］.机械工程材料,2004,28(8):38-41.
【2】LI Zhi-gang,YE Fang-bao,ZHANG Yu.Effects of nano calcium carbonate on the properties of corundum-based castables ［J］.Industrial Ceramics,2009,29(1):31-37.
【3】甘明亮,燕飞,贺中央,等.纳米碳酸钙加入量对刚玉质浇注料性能的影响［J］.武汉科技大学学报,2009,32(2):188-192.
【4】李志刚,叶方保,张宇.铝酸钙水泥对刚玉基浇注料性能的影响［J］.耐火材料,2007,41(5):336-340.
【5】崔洪梅,刘宏,王继扬,等.纳米粉体的团聚与分散［J］.机械工程材料,2004,28(8):38-41.
相关信息
