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    • 9. 发明申请
    • ALKALINE EARTH ALUMINO-BOROSILICATE CRACK RESISTANT GLASS
    • 碱性金属铝铝合金耐腐蚀玻璃
    • WO2012074954A1
    • 2012-06-07
    • PCT/US2011/062294
    • 2011-11-29
    • CORNING INCORPORATEDELLISON, Adam, JamesGROSS, Timothy, Michael
    • ELLISON, Adam, JamesGROSS, Timothy, Michael
    • C03C3/091
    • C03C3/091
    • The present disclosure relates to glass articles for use as a touchscreen substrate or cover glass article for use in a portable electronic device, particularly an aluminoborosilicate glass being substantially free of alkalis, comprising at least 55 mol% SiO 2 , at least 5 mol% Al 2 O 3 and at least one alkaline earth RO component. The alkali-free aluminoborosilicate exhibits an Al 2 O 3 +B 2 O 3 to RO mol % ratio which exceeds 1 and an Al 2 O 3 to RO mol% ratio which exceeds 0.65. The aluminoborosilicate glasses disclosed herein exhibits high damage resistance as evidenced by a Vickers median/radial crack initiation load which is greater than than1000 gf, as well as a high scratch resistance of at least 900g, as measured by the lack of the presence of median/radial cracks when a load is applied by a moving Knoop indenter.
    • 本公开涉及用作便携式电子设备中使用的触摸屏基板或盖玻璃制品的玻璃制品,特别是基本上不含碱的铝硼硅酸盐玻璃,其包含至少55摩尔%的SiO 2,至少5摩尔%的Al 2 O 3和 至少一种碱土金属RO组分。 无碱铝硼硅酸盐的Al 2 O 3 + B 2 O 3与RO摩尔%比超过1,Al 2 O 3与RO摩尔%比超过0.65。 本文公开的铝硼硅酸盐玻璃表现出高的耐损伤性,如通过维氏中值/径向裂纹起始载荷大于1000gf以及高至少900g的高耐划痕性所证明的,如通过不存在中值/ 当运动的Knoop压头施加负载时的径向裂纹。