Johnson-Mehl-Avrami方程最早由三位科学家Johnson、Mehl和Avrami于1939年提出,他们通过研究金属的晶化过程,提出了描述晶体生长动力学行为的数学模型。JMA方程在固体相变领域得到了广泛应用,并为研究固体材料的相变过程提供了重要的理论工具。 二、JMA方程的公式推导 3. JMA方程的一般形式 JMA方程的一般形式可以表示为: \...
The generalized Kolmogorov-Johnson-Mehl-Avrami modelSuckjoon Jun,* Haiyang Zhang, and John Bechhoefer†Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 Received 30 July 2004; published 21 January 2005 Motivated by a recent application of the Kolmogorov-...
Johnson-Mehl动力学方程与Avrami方程相比,具有___适用范围。A.更宽的B.更窄的C.相同的
Johnson-Mehl-Avrami KJMA model 1–3 hassincebeen widelyusedbymetallurgistsandothermaterialsscientiststo analyzephasetransitionkinetics 4 .Inaddition,themodel hasbeenappliedtoawiderangeofotherproblems,from crystallizationkineticsoflipids 5 ,polymers 6 ,theanaly- sisofdepositionsinsurfacescience 7 ,toecological...
The contention of Sarkar and Ray that Johnson-Mehl-Avrami equation is not a true kinetic equation is disproved. It is shown that this equation can be expressed in the form of a standard kinetic equation. The results of the authors are only an approximation of Johnson-Mehl-Avrami kinetics when...
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百度试题 题目Johnson-Mehl动力学方程比Avrami方程的适用范围( )。 A.更宽B.相似C.更窄D.没有可比性相关知识点: 试题来源: 解析 C 反馈 收藏
3.1. Applicability of the JMA model The most widely used method for testing the applicability of the JMA model for non-isothermal DSC experiments is to inspect the linearity of the Avrami plot (the plot of ln[−ln(1−α)] as a function of 1/T) [15]. According to Eq. (1), ...
Proposes a model to understand the deviations from the Kolmogorov-Johnson-Mehl-Avrami kinetics theory found in metal recrystallization and amorphous semiconductor crystallization. Kinetics of the transformation; Grain-size distribution of the material; Experimental deviations due to preexisting anisotropy along...
The equation proposed by Augis and Bennett for determining the kinetic exponent of the Johnson-Mehl-Avrami (JMA) model is thoroughly analyzed; a new expres... FJ Gotor,JM Criado,J Malek - 《Journal of the American Ceramic Society》 被引量: 0发表: 2001年 Limitation of the Johnson-Mehl-Avra...