| 摘要 |
PROBLEM TO BE SOLVED: To provide a no-alkali glass which exhibits excellent characteristics as a glass substrate for use in a display and is excellent in the resistance to reduction and further is suitable for forming by the float process. SOLUTION: The no-alkali glass has a substantial chemical composition, in mol%, comprising SiO<SB>2</SB>of 60% or more and less than 66%, Al<SB>2</SB>O<SB>3</SB>of 0 to 12%, B<SB>2</SB>O<SB>3</SB>of 5 to 10%, MgO of 0 to 18%, CaO of 0 to 18%, SrO of 0 to 18%, and BaO of 0 to 6% with the proviso that CaO+SrO is 10 to 25% and MgO+CaO+SrO+BaO is 15.5 to 30%, and is substantially free of an alkali metal oxide. COPYRIGHT: (C)2006,JPO&NCIPI
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