LAS微晶玻璃在离子交换后的去结晶相变化及机械性能表征  

Crystallization Phase Change and Mechanical Properties Characterization of LAS Glass-Ceramics after Ion Exchange

作　　者：韩韩 彭瑞欣 李筱凡 赵会峰 姜宏[1,2,3,4] 马艳平 HAN Han;PENG Ruixin;LI Xiaofan;ZHAO Huifeng;JIANG Hong;MA Yanping(State Key Laboratory of Marine Resources Utilization in the South China Sea,Hainan University,Haikou 570228,China;HNHT Special Glass Technology Co.,Ltd.,Chengmai 571924,China;State Key Laboratory of Special Glass,Chengmai 571924,China;Key Laboratory of Special Glass in Hainan Province,Hainan University,Haikou 570228,China)

机构地区：[1]海南大学,南海海洋资源利用国家重点实验室,海口570228 [2]海南海控特玻科技有限公司,澄迈571924 [3]特种玻璃国家重点实验室,澄迈571924 [4]海南大学,海南省特种玻璃重点实验室,海口570228

出　　处：《硅酸盐通报》2021年第9期3138-3144,共7页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51761010);海南省重点研发项目(ZDYF2020015,ZDYF2019019);海南大学科研平台建设(ZY2019HN09)。

摘　　要：Li_(2)O-Al_(2)O_(3)-SiO_(2)(LAS)系微晶玻璃是一种高性能的实用微晶玻璃体系,以Li_(2)O、Al_(2)O_(3)和SiO_(2)作为主要原料,采用整体析晶法制备了以透锂长石(LiAlSi_(4)O_(10))为主晶相的微晶玻璃,并采用低温离子交换单元盐浴的方法,对其进行化学强化。利用X射线衍射仪、扫描电子显微镜等设备研究了LAS系微晶玻璃化学强化后的表面形貌和机械性能。结果表明,化学强化后此体系微晶玻璃表面出现去结晶相,维氏硬度显著降低,但抗弯强度显著提高,强化10 h时,表面出现约740 nm的非晶相层,抗弯强度达到最大值472 MPa。The Li_(2)O-Al_(2)O_(3)-SiO_(2)(LAS)glass-ceramics is a practical glass-ceramics system with high performance.In this experiment,Li_(2)O,Al_(2)O_(3)and SiO_(2)were used as main raw materials,and the glass-ceramics with petalite as the main crystal phase was prepared by integral crystallization method,and then it was chemically strengthened by salt bath at low temperature for ion exchange.The surface morphology and mechanical properties of chemically strengthened LAS glass-ceramics were studied by X-ray diffractometer and scanning electron microscope.The results show that after chemical strengthening,the crystallization phase disappeares on the surface of glass-ceramics in this system,and the Vickers hardness decreases significantly,while bending strength increases.After strengthening for 10 h,an amorphous layer of 740 nm appeared on the surface,and the maximum bending strength reached 472 MPa.

关 键 词：微晶玻璃 离子交换 去结晶相 维氏硬度 抗弯强度 

分 类 号：TQ171[化学工程—玻璃工业]