Crack Initiation Tendency of Chemically Strengthened Glasses |
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| Authors: | Hidekatsu Morozumi Hirotaka Nakano Satoshi Yoshida Jun Matsuoka |
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| Affiliation: | 1. Glass Development Group, Ishizuka Glass Co., Ltd., Kawai-cho 1880, Iwakura, Aichi, 482-8510 Japan;2. Department of Materials Science, The University of Shiga Prefecture, Hassaka 2500, Hikone, Shiga, 522-8533 Japan |
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| Abstract: | The relationship between crack initiation tendency before chemical strengthening and fracture strength of chemically strengthened glass was investigated. Four kinds of glass compositions were used in this study: soda-lime silicate (SLS), aluminosilicate (ALS-1, ALS-2), and aluminoborosilicate (ALBS) glasses. The fracture strength of sheet glass was measured by the four-point bending test, the ring-on-ring test, the ball drop test, and the predamaged four-point bending test. ALBS glass, which has the lowest crack formation probability before chemical strengthening, is more damage tolerant than other glasses, and one of the best candidates for chemical strengthening. |
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