D1(α) |
α2 = kt
|
0.62 |
1D diffusion |
D2(α) |
(1 – α)ln(1 – α) + α = kt
|
0.57 |
2D diffusion (bidimensional
particle shape) |
D3(α) |
[1 – (1 – α)1/3]2 = kt
|
0.54 |
3D diffusion (tridimensional particle shape
Jander equation) |
D4(α) |
(1 – 2/3α) – (1 – α)2/3 = kt
|
0.57 |
3D diffusion (tridimensional particle
shape Ginstling–Brounshtein equation) |
F1(α) |
–ln(1 – α) = kt
|
1 |
bimolecular decay
law (instantaneous nucleation and unidimensional growth) |
R2(α) |
1 – (1 – α)1/2 = kt
|
1.11 |
phase boundary-controlled reaction (contracting area, e.g.,
bidimensional shape) |
R3(α) |
1 – (1 – α)1/3 = kt
|
1.07 |
phase boundary-controlled reaction (contracting volume, e.g., tridimensional shape) |
A2(α) |
[−ln(1 – α)]1/2 = kt
|
2 |
random
instant nucleation and 2D growth of nuclei (Avrami–Erofeev equation) |
A3(α) |
[−ln(1 – α)]1/3 = kt
|
3 |
random instant nucleation and 3D growth of nuclei (Avrami–Erofeev equation) |