Al_(2)O_(3)掺杂对二硅酸锂微晶玻璃相形成及力学性能的影响研究  

Effect of Al_(2)O_(3)Doping on Phase Formation and Mechanical Properties of Lithium Disilicate Glass-Ceramics

作　　者：邱基华 QIU Ji-hua(Chaozhou Three-Circle(Group)Co.,Ltd.,Chaozhou 521000,China)

机构地区：[1]潮州三环(集团)股份有限公司,广东潮州521000

出　　处：《当代化工》2022年第9期2072-2076,共5页Contemporary Chemical Industry

基　　金：2020年广东省重点领域研发计划项目“IC芯片封装用陶瓷劈刀材料及应用研究”成果之一。(项目编号:2020B010181001)。

摘　　要：以传统熔融淬火法制备的SiO_(2)-Li_(2)O-K_(2)O-P_(2)O_(5)-CeO_(2)-Al_(2)O_(3)玻璃体系为基础,旨在研究Al_(2)O_(3)添加剂摩尔分数对常规方法制备的二硅酸锂微晶玻璃相形成和力学性能的影响。LCA1、LCA2和LCA3的Al_(2)O_(3)摩尔分数分别为3.0%、4.5%和6.0%。随着Al_(2)O_(3)摩尔分数的增加,二硅酸锂微晶玻璃化转变温度(Tg)、结晶温度(Tc)、相形成和力学性能均有较大变化,说明Al_(2)O_(3)对二硅酸锂微晶玻璃的影响很大。600℃和800℃热处理1 h后,X射线衍射结果显示,所有微晶玻璃样品中主要相为Li_(2)Si_(2)O_(5),少量相为CeO_(2)、LiAlSi_(3)O_(8)、石英和Li_(2)SiO_(3)。当Al_(2)O_(3)摩尔分数最低时,其抗弯强度最高,维氏硬度最高,分别为188.34 MPa和776 MPa。这些结果可能是由于LCA1样品中棒状Li_(2)Si_(2)O_(5)的连锁组织造成的。Based on the SiO_(2)-Li_(2)O-K_(2)O-P_(2)O_(5)-CeO_(2)-Al_(2)O_(3)glass system prepared by the traditional melt quenching method,the effect of Al_(2)O_(3)additive mole fraction on the phase formation and mechanical properties of lithium disilicate glass-ceramics prepared by the conventional method was studied.The mole fraction of Al_(2)O_(3)in LCA1,LCA2 and LCA 3 were 3.0%,4.5%and 6.0%,respectively.With the increase of the mole fraction of Al_(2)O_(3),the glass transition temperature(Tg),crystallization temperature(Tc),phase formation and mechanical properties of lithium disilicate glass-ceramics had great changes,indicating that Al_(2)O_(3)had a great influence on the lithium disilicate glass-ceramics.After heat treatment at 600℃and 800℃for 1 h,X-ray diffraction results showed that Li_(2)Si_(2)O_(5)was the main phase in all the glass-ceramics samples,and a small number of phases were CeO_(2),LiAlSi_(3)O_(8),quartz and Li_(2)SiO_(3).When the mole fraction of Al_(2)O_(3)was the lowest,the bending strength and Vickers hardness were the highest,which were 188.34 MPa and 776 MPa,respectively.These results might be caused by the interlocking structure of rod-like Li_(2)Si_(2)O_(5)in LCA1 samples.

关 键 词：Al_(2)O_(3) 二硅酸锂微晶玻璃 相形成 力学性能 

分 类 号：TQ171[化学工程—玻璃工业]