Abstract
We report here a method of iron cementation. By irradiating pure iron substrates in a methane atmosphere with a pulsed excimer laser, a rather thick and polycrystalline cementite layer was obtained. The characterization of the treated samples, carried out by means of Mössbauer spectroscopy, x-ray diffraction, Rutherford backscattering spectrometry and nanoindentation, indicates a layer thickness of about 1 μm. A possible mechanism for the cementite formation after laser irradiation in methane atmosphere is proposed.
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