Thermal shock properties of chemically toughened borosilicate glass
نویسنده
چکیده
This paper describes an experimental test of the uni®ed theory of thermal shock. A borosilicate glass (78.1%SiO2± 13.3%B2O3±4.7%Na2O±3.4%Al2O3) subjected to ion-exchange in molten KNO3, was used. The theory predicts the critical temperature dierence for fracture initiation by thermal shock; however, it overestimates the number of cracks which propagate simultaneously. Despite that fact, taken into account the numerous assumptions of the theoretical model and the possible experimental errors, our results indicate a fair agreement between theory and experiment. Ó 1999 Elsevier Science B.V. All rights reserved.
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