Apparent Activation Energy in Low Temperature Aging of Y-TZP Ceramics
Apparent activation energy in low temperature aging of two kinds of Y-TZP ceramic was studied in this paper. The ceramics were processed into small pieces, and aging in 100°C, 110°C, 120°C, 130°C and 140°C respectively. The content of monoclinic phase was calculated by X-ray diffraction patterns and the microstructure was scanned by SEM. According to MAJ law and Arrhenius formation, straight lines were fitted in coordinate systems of ln (ln (1/(1 − f )))-ln t and ln b-1/T, and the kinetic parameters of low temperature aging of Y-TZP ceramic were calculated according to these lines. The results revealed that grain size significantly affected apparent activation energy of Y-TZP ceramics.
Wei Pan and Jianghong Gong
Q. F. Xie et al., "Apparent Activation Energy in Low Temperature Aging of Y-TZP Ceramics", Advanced Materials Research, Vols. 105-106, pp. 100-103, 2010