📜 Theorem, law or theory

Avrami equation

Teoría de Kolmogorov-Johnson-Mehl-Avrami

Date
1937-1941 · confidence medium
Place
Moscow, Russia
Credited to
Andréi Kolmogórov
Field
Matter & energy

What was discovered

An equation describing the kinetics of phase transformation in solids at constant temperature, particularly crystallization, derived in a series of papers between 1937 and 1941 by Kolmogorov, Johnson, Mehl and Avrami independently.

What it led to

  • Standard model for the kinetic study of material crystallization
  • Application to other phase transformations and chemical reactions
  • Extension to the analysis of ecological and growth systems
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Sources✓ verified 2026-09-28