Formation of Fe[sub 3]C surface layers by laser plasma cementation

Carpene, E.; Schaaf, P.
February 2002
Applied Physics Letters;2/4/2002, Vol. 80 Issue 5, p891
Academic Journal
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 Mo¨ssbauer 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. © 2002 American Institute of Physics.


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