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℃,110℃,120℃,130℃ and 140℃ 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 In (In (1/(1-f)))-In t and In b-l/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.
Y-TZP ceramic low temperature aging grain size kinetic parameters
Qifei Xie Chen Wang Qingfeng Zan Limin Dong
Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
国际会议
The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))
哈尔滨
英文
100-103
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）