高能球磨对Li_2O-Al_2O_3-SiO_2微晶玻璃粉体粒度及结晶的影响  

Effect of High Energy Ball Milling on Particle Size and Crystallization Behavior of LAS(Li_2O-Al_2O_3-SiO_2)Glass Ceramics

作　　者：赵仕敬 王海龙[1] 邵刚[1] 范冰冰[1] 卢红霞[1] 许红亮[1] 陈德良[1] 张锐[2] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450001 [2]郑州航空工业管理学院,河南郑州450015

出　　处：《陶瓷学报》2017年第5期650-654,共5页Journal of Ceramics

基　　金：河南省高校科技创新人才(15HASTIT009);中国博士后科学基金(2016T90677)

摘　　要：通过高能球磨的方法对Li_2O-Al_2O_3-SiO_2微晶玻璃粉体细化,研究不同球磨时间对粉体粒度的影响。通过激光粒度分析仪、XRD、SEM、DSC、万能试验机等测试方法,对粉体的粒度,微晶玻璃的晶相、形貌、抗弯强度等进行表征。研究结果表明:高能磨75 min后,得到的粉体粒径为358 nm,其结晶温度比原始粉体的结晶温度降低了约50℃,并且球磨后得到的超细粉体在850℃烧结后,其抗弯强度达到61.67 MPa,比没有经过高能球磨的原始粉体烧结后样品的强度提升了近40%。Fine Li_2O-Al_2O_3-SiO_2（LAS） glass ceramics particles were crushed by high energy ball milling. The effect of the milling time on the particle size of LAS glass ceramics was investigated. Particle-size analyser, X-ray diffraction and scanning electron microscopy are used to characterize the particle size, phase and microstructure of the LAS glass ceramics. Meanwhile, the flexural strength of the sintered LAS glass ceramics were considered too. It＇s found that the particle size of LAS can be decreased to 358 nm after milled 75 min by high energy ball milling. The crystallization temperature of fine LAS glass ceramics powder is 50 oC lower than that of initial powder. The crystal phase is β-spodumene for the LAS sintered at 850 ℃. The bending strength of sintered LAS is 61.67 MPa, which is about 40% higher than that of specimens made from raw powder.

关 键 词：微晶玻璃 高能球磨 锂铝硅 抗弯强度 

分 类 号：TQ174.75[化学工程—陶瓷工业]