Yong Su KIM,Hyun Jun JEON,Hyung Bong LIM,Kyung Sik OH,Sung Min KIM,Young Pyo HONG,Joon Hyung KIM
申请号：
US15453296
公开号：
US20180257973A1
申请日:
2017.03.08
申请国别(地区):
US
年份:
2018
代理人:
摘要：
The present invention relates to a method for preparing a lithium disilicate glass-ceramics containing silicate as a main component, and more particularly, to a method for preparing a glass-ceramics, which is capable of adjusting machinability or translucency according to a crystalline size by using a first heat treatment or a second heat treatment. To this end, a method for preparing a glass-ceramics containing a silica crystalline phase includes: performing a first heat treatment on a glass composition at a temperature of 400 to 850° C., so that a lithium disilicate crystalline phase and a silica crystalline phase each having a size of 5 to 2,000 nm are formed through the first heat treatment. After the first heat treatment, the method further includes performing a second heat treatment at a temperature of 780 to 880° C., so that translucency is adjusted by a temperature of the second heat treatment.
