Thermal Diffusivity of Partially and Fully Stabilized Zirconia

, 이홍림; D. P, H hasselman; L, D. Bentsen; R, Syed; , 이홍림; D. P, H hasselman; L, D. Bentsen; R, Syed

J. Korean Ceram. Soc. > Volume 22(4); 1985 > Article

Journal of the Korean Ceramic Society 1985;22(4): 40.

부분 및 완전 안정화 지르코니아의 열확산 계수

이홍림, H hasselman D. P¹, D. Bentsen L¹, Syed R¹

연세대학교 공과대학 요업공학과
¹버어지니아 주립대학 재료공학과

Thermal Diffusivity of Partially and Fully Stabilized Zirconia

이홍림 , H hasselman D. P¹, D. Bentsen L¹, Syed R¹

ABSTRACT

Thermal diffusivities of zirconia samples partially or fully stabilized by MgO and $Y_2O_3$ were measured b laser-flash method up to 140$0^{circ}C$ The values of thermal diffusivity decreased as the contents of MgO and $Y_2O_3$ increased due to the phonon scattering effect of defect structure of cubic phase formed. The temperature dependence of thermal diffusivity showed that the thermal diffusivity values decreased due to phono-phonon scattering as the temperature increased. The difference in thermal diffusivity was observed on cooling after heating up to 140$0^{circ}C$ for magnesia stabi-lized zirconia samples but not for yttria stabilized zirconia samples.