31-10-2013 дата публикации
Номер: US20130288001A1
Принадлежит:
Provided is a tempered glass having a compression stress layer in a surface thereof, the tempered glass comprising, as a glass composition in terms of mol %, 45 to 75% of SiO, 3 to 15% of AlO, 0 to 12% of LiO, 0.3 to 20% of NaO, 0 to 10% of KO, and 1 to 15% of MgO+CaO, and having a molar ratio (AlO+NaO+PO)/SiOof 0.1 to 1, a molar ratio (BO+NaO)/SiOof 0.1 to 1, a molar ratio PO/SiOof 0 to 1, a molar ratio AlO/SiOof 0.01 to 1, and a molar ratio NaO/AlOof 0.1 to 5, wherein the surface is etched partially or entirely before tempering treatment. 1. A tempered glass having a compression stress layer in a surface thereof , the tempered glass comprising , as a glass composition in terms of mol % , 45 to 75% of SiO , 3 to 15% of AlO , 0 to 12% of LiO , 0.3 to 20% of NaO , 0 to 10% of KO , and 1 to 15% of MgO+CaO , and having a molar ratio (AlO+NaO+PO)/SiOof 0.1 to 1 , a molar ratio (BO+NaO)/SiOof 0.1 to 1 , a molar ratio PO/SiOof 0 to 1 , a molar ratio AlO/SiOof 0.01 to 1 , and a molar ratio NaO/AlOof 0.1 to 5 , wherein the surface is etched partially or entirely before tempering treatment.2. The tempered glass according to claim 1 , wherein the tempered glass comprises claim 1 , as a glass composition in terms of mol % claim 1 , 45 to 75% of SiO claim 1 , 4 to 13% of AlO claim 1 , 0 to 3% of BO claim 1 , 0 to 8% of LiO claim 1 , 5 to 20% of NaO claim 1 , 0.1 to 10% of KO claim 1 , and 3 to 13% of MgO+CaO claim 1 , and has a molar ratio (AlO+NaO+PO)/SiOof 0.1 to 0.7 claim 1 , a molar ratio (BO+NaO)/SiOof 0.1 to 0.7 claim 1 , a molar ratio PO/SiOof 0 to 0.5 claim 1 , a molar ratio AlO/SiOof 0.01 to 0.7 claim 1 , and a molar ratio NaO/AlOof 0.5 to 4.3. The tempered glass according to claim 1 , wherein the tempered glass comprises claim 1 , as a glass composition in terms of mol % claim 1 , 45 to 75% of SiO claim 1 , 5 to 12% of AlO claim 1 , 0 to 1% of BO claim 1 , 0 to 4% of LiO claim 1 , 8 to 20% of NaO claim 1 , 0.5 to 10% of KO claim 1 , and 5 to 13% of MgO+CaO claim 1 , ...
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