Modeling of nitrogen depth profiles in iron after nitriding with a homogenized laser beam

Carpene, E.; Landry, F.; Schaaf, P.
October 2000
Applied Physics Letters;10/9/2000, Vol. 77 Issue 15
Academic Journal
In this letter we propose a phenomenological model to explain the nitrogen depth profile in iron after laser nitriding. The model is based on the one-dimensional diffusion equation and two sets of functions are use to fit the experimental profiles: complementary error function (erfc) and Gaussian. The different nature of these profiles reflects the presence of two stages in the process: the nitrogen is supplied in the sample as an erfc, while the diffusion to larger depths takes place as Gaussians. © 2000 American Institute of Physics.


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