新型硬盘基板微晶玻璃的晶核剂研究  

Research on nucleation agents of new style hard disk

作　　者：吕昊[1] 刘爱梅[1] 曹志峰[2] 黄少林 詹祖盛 

机构地区：[1]孝感学院物理系,湖北孝感432000 [2]长春理工大学材料科学与工程系,长春130022 [3]湖北新光华信息股份有限公司,湖北襄樊441300

出　　处：《光学技术》2007年第5期728-730,共3页Optical Technique

摘　　要：采用差热分析(DTA)、X-射线衍射分析(XRD)和扫描电镜(SEM)等分析手段研究了P2O5、TiO2、ZnF2作为晶核剂对Li2O-Al2O3-SiO2(LAS)系统微晶玻璃形核和晶化的影响。结果表明:P2O5晶核剂能获得小尺寸的晶粒,晶型为球形或多面体形,析晶的可控制性良好;TiO2晶核剂析晶温度较高,析晶强烈,形成条状细晶;ZnF2晶核剂能获得小尺寸球状晶粒,析晶温度较低,但对温度过于敏感。P2O5作为晶核剂可以获得理想小晶粒的透明微晶玻璃,从而适合于用作新型硬盘基板。The nucleation and crystallization of Li2O-Al2O3-SiO2 glasses which has P2O5 ,TiO2 ,ZnF2 as nuclear doses independently are investigated by the differential thermal analysis（DTA）, X-ray diffraction（XRD） and the scanning electron microscopy（SEM）. The results shows that P2O5 nuclear dose can obtain spherical or polyhedral minor size crystal grains and has better controllability; TiO2 nuclear dose has higher crystallization temperature , intensive crystallization and formatting banding close grains; ZnF2 nuclear dose can obtain minor size crystal grains and lower crystallization temperature, but it is .sensitive to temperature. The transparent glass-ceramies considered having the ideal and minor size crystal grains can be obtained and can be fitted for new substrate of hard disk.

关 键 词：微晶玻璃 晶核剂 差热分析 X-射线衍射分析 扫描电镜 

分 类 号：TQ171[化学工程—玻璃工业]