烧结法制备Li_2O-Al_2O_3-SiO_2微晶玻璃的烧结制度及性能研究  

A Study on Sintering Schedule and Performance of Li_2O-Al_2O_3-SiO_2 Glass-Ceramics by Sintering

作　　者：郭伟明[1] 成茵[1] 肖汉宁[1] 

机构地区：[1]湖南大学材料科学与工程学院,长沙410082

出　　处：《陶瓷科学与艺术》2004年第6期4-9,共6页Ceramics Science & Art

基　　金：国家自然科学基金(5074024)国家863计划C2005AA3320401资助项目

摘　　要：采用烧结法制备了Li2O-Al2O3-SiO2(LAS)微晶玻璃。通过DSC分析,并结合对LAS微晶玻璃烧结过程的研究,提出了其较合适的烧结制度。用XRD对该微晶玻璃的物相组成进行了研究,讨论了烧结温度对LAS微晶玻璃热膨胀系数及抗弯强度的影响。为获得具有结构均匀致密、晶相含量高的LAS微晶玻璃,应使烧结温度尽量接近主晶相析晶温度。本文研究的LAS微晶玻璃的适宜烧结温度为1130℃。Li2O-Al2O3-SiO2 (LAS) glass-ceramics were prepared by sintering. The sintering schedule of LAS glass-ceramics were determined by DSC analysis and sintering process. Phase compositions of the glass-ceramics were investigated by XRD. The influence of sintering temperature on linear expansion coefficient and bending strength of LAS glass-ceramics were discussed. Experimental results show that sintering temperature should be close to the crystallizing temperature of main crystal so as to obtain a homogeneous and highly crystallized microstructure. The optimal sintering temperature in this study is about 1130 ℃.

关 键 词：烧结法 LI2O-AL2O3-SIO2 微晶玻璃 热膨胀性能 抗弯强度 

分 类 号：TQ171[化学工程—玻璃工业]