US 11,680,009 B2
Glass-ceramic and substrate thereof
Tianlai Yu, Sichuan (CN); Baoping Yuan, Sichuan (CN); and Xiaobing Nie, Sichuan (CN)
Assigned to CDGM GLASS CO., LTD, Sichuan (CN)
Appl. No. 16/768,633
Filed by CDGM GLASS CO., LTD, Sichuan (CN)
PCT Filed Nov. 19, 2018, PCT No. PCT/CN2018/116149
§ 371(c)(1), (2) Date Mar. 23, 2021,
PCT Pub. No. WO2019/105250, PCT Pub. Date Jun. 6, 2019.
Claims priority of application No. 201711247883.6 (CN), filed on Dec. 1, 2017; and application No. 201711248375.X (CN), filed on Dec. 1, 2017.
Prior Publication US 2022/0048810 A1, Feb. 17, 2022
Int. Cl. C03C 10/12 (2006.01); C03C 10/14 (2006.01); C03C 10/00 (2006.01)
CPC C03C 10/0027 (2013.01) [C03C 10/0009 (2013.01); C03C 10/0054 (2013.01); C03C 2204/00 (2013.01)] 23 Claims
 
1. A glass ceramic, comprising, by wt %: 60 to 80% of SiO2; 4 to 20% of Al2O3; more than 0 but less than or equal to 15% of Li2O; more than 0 but less than or equal to 12% of Na2O; 0 to 5% of K2O; more than 0 but less than or equal to 5% of ZrO2; 0 to 5% of P2O5; and 0 to 10% of TiO2; and
a crystalline phase containing LiAlSi4O10, quartz, and quartz solid solution,
wherein the quartz and the quartz solid solution crystalline phase account for 15 to 30% of the glass ceramic by wt %, the LiAlSi4O10 crystalline phase accounts for not greater than 15% of the glass ceramic by wt %, and
wherein a ratio of ZrO2/Li2O is more than 0 but less than or equal to 0.35.