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J. Korean Ceram. Soc. > Volume 22(5); 1985 > Article
Journal of the Korean Ceramic Society 1985;22(5): 23.
$beta$-$Al_2O_3$ 고체전해질의 퇴화모델
송효일, 김응수, 윤기현
연세대학교 공과대학 요업공학과
A Model for Degradation of $beta$-$Al_2O_3$ Solid Electrolyte
A model for degradation of $eta$-$Al_2O_3$ is derived from sress generated by Poiseuille pressure capillary effect and effulent flux in charging process of Na-S Battery. Critical current density for degradation increase with increasing the crack length and crack tip radius. radius 10-7cm and crack length 10-5cm Dependence of crack growth velocity on crack lengh is seperated two regions that is for a large crack length it is predominated by Poiseuille pressure and effulent fluex but in the case of small crack length it is controlled by capillary effect.
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