THE RELATIONSHIP BETWEEN ISOTHERMAL AND NONISOTHERMAL DESCRIPTION OF JOHNSON-MEHL-AVRAMI-KOLMOGOROV KINETICS

被引:96
作者
WOLDT, E
机构
[1] Institut für Werkstoffe, Technische Universität Braunschweig
关键词
ISOTHERMAL KINETICS; NONISOTHERMAL KINETICS; JOHNSON-MEHL-AVRAMI-KOLMOGOROV KINETICS; AVRAMI EXPONENT; KISSINGER PLOT; ACTIVATION ENERGY;
D O I
10.1016/0022-3697(92)90096-V
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Various solid state transformations, i.e. the recrystallization of deformed metals or the crystallization of amorphous alloys, are often described using Johnson-Mehl-Avrami-Kolmogorov kinetics. However it is not clear whether the isothermal parameters of this representation can also be determined in less time from non-isothermal measurements. It is the aim of this paper to show that this can indeed be done and why commonly used methods for the analysis of non-isothermal measurements like the Kissinger-plot will give the correct activation energy.
引用
收藏
页码:521 / 527
页数:7
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