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Title:
METHOD FOR STRENGTHENING GLASS CERAMIC AND METHOD FOR MANUFACTURING GLASS CERAMIC COVER PLATE
Document Type and Number:
WIPO Patent Application WO/2019/134133
Kind Code:
A1
Abstract:
A method for strengthening a glass-ceramic (10) and a method for manufacturing a glass ceramic cover plate (100), comprising: (S11) providing a first ion exchange bath (101) and a second ion exchange bath (102), the first ion exchange bath (101) comprising potassium nitrate and sodium nitrate, and the second ion exchange bath (102) comprising potassium nitrate; (S12) placing the glass ceramic (10) to be strengthened into the first ion exchange bath (101) for a primary salt bath to obtain a primarily strengthened glass ceramic (20); (S14) placing the primarily strengthened glass ceramic (20) into the second ion exchange bath (102) for a secondary salt bath to obtain a secondarily strengthened glass ceramic (30). The method increases the linear expansion coefficient, hardness, bending stress and strength of the glass ceramic, and reduces dielectric loss.

Inventors:
LIU, Wei (No.18 Fu Ying Road, Changbei Economic And Technological Development ZoneNanchang, Jiangxi 3, 330013, CN)
LI, Huozeng (No.18 Fu Ying Road, Changbei Economic And Technological Development ZoneNanchang, Jiangxi 3, 330013, CN)
TANG, Bin (No.18 Fu Ying Road, Changbei Economic And Technological Development ZoneNanchang, Jiangxi 3, 330013, CN)
LI, Ya (No.18 Fu Ying Road, Changbei Economic And Technological Development ZoneNanchang, Jiangxi 3, 330013, CN)
ZHANG, Fang (No.18 Fu Ying Road, Changbei Economic And Technological Development ZoneNanchang, Jiangxi 3, 330013, CN)
WANG, Xiaofeng (No.18 Fu Ying Road, Changbei Economic And Technological Development ZoneNanchang, Jiangxi 3, 330013, CN)
Application Number:
CN2018/071629
Publication Date:
July 11, 2019
Filing Date:
January 05, 2018
Export Citation:
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Assignee:
NANCHANG O-FILM OPTICAL TECHNOLOGY CO., LTD (No.18 Fu Ying Road, Changbei Economic And Technological Development ZoneNanchang, Jiangxi 3, 330013, CN)
International Classes:
C03C21/00
Domestic Patent References:
WO2016117476A12016-07-28
WO2015008763A12015-01-22
Foreign References:
CN107216032A2017-09-29
CN103553306A2014-02-05
CN106608713A2017-05-03
CN105837031A2016-08-10
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (Room 301 Trade Building, Zhaolanyuan Tsinghua University, Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
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