硅酸盐通报2018，Vol.37Issue(1)：200-205,6.
蓝晶石含量对球形45莫来石轻骨料浇注料显微结构及性能的影响
Influence of Kyanite Content on the Microstructures and Properties of Castables Containing Spherical Lightweight 45 Mullite Aggregates
摘要
Abstract
In order to improve the volume stability and microstructure of the lightweight mullite castables which used the spherical shape lightweight mullite(M45)as aggregates, five castables with different contents of kyanite(w =8%、10%、12%、14% and 16%)were prepared.The phase compositions, microstructures and physical properties of the specimens sintering at 1300 ℃ for 3 h were investigated through x-ray diffractometer(XRD),scanning election microscopy(SEM),etc.The results show that, for the specimens sintered at 1300 ℃, with the kyanite content increased from 8wt% to 16wt%, the strengths decreased significantly when the linear change rates increased from -0.87% to 0.64%, and the bonding between matrix and aggregate got better first and then got poor.The most apposite mode is the sample containing 12% kyanite, which had a bulk density of 1.73 g/cm3, an apparent porosity of 36.8%, a high crushing strength of 29.3 MPa, a low linear change rate of 0.18%, a thermal conductivity of 0.58 W/(m· K)at 800 ℃and a refractoriness under load(T0.6)of 1339 ℃.关键词
球形莫来石轻骨料/轻质莫来石浇注料/蓝晶石含量/显微结构/性能Key words
spherical lightweight mullite aggregate/lightweight mullite castable/kyanite content/microstructure/property分类
化学化工引用本文复制引用
王月月,鄢文,李楠,张振燕,高光斌..蓝晶石含量对球形45莫来石轻骨料浇注料显微结构及性能的影响[J].硅酸盐通报,2018,37(1):200-205,6.基金项目
湖北省自然科学基金重点项目(2015CFA122) （2015CFA122）
武汉市青年科技晨光计划项目(2016070204010108) （2016070204010108）
