Modeling of the Growth Kinetics of Boride Layers in Powder-Pack Borided ASTM A36 Steel Based on Two Different Approaches

Table 2

Estimated values of boron diffusion coefficients in the Fe₂B layer using the second approach (non-steady-state diffusion model).

Temperature (K)	Type of layer	equation (23) (m^2s^−1)
1123	Fe2B	4.28076 × 10^−11
1173		9.3056 × 10^−11
1223		1.9467 × 10^−10
1273		3.1822 × 10^−10