Toughening by Stress-Induced Microcracking in Two-Phase Ceramics |
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| Authors: | Katherine T. Faber Thawi Iwagoshi Asish Ghosh |
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| Affiliation: | Department of Ceramic Engineering, The Ohio State University, Columbus, Ohio 43210 |
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| Abstract: | Two glass/alumina composites were examined as potential systems for stress-induced microcrack toughening. A borosilicate glass/alumina material having a thermal mismatch strain of approximately 0.8% demonstrated toughness up to twice that of an aluminosilicate glass/alumina composite and other reported glass/alumina composites. High-sensitivity density measurements confirmed a density reduction on application of a stress in the borosilicate glass/alumina system, providing indirect evidence for stress-induced microcracking. |
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