Low temperature nitriding of AISI 316L stainless steel and titanium in a low pressure arc discharge

Renevier, Nathalie orcid iconORCID: 0000-0003-2471-7236, Collignon, P, Michel, H and Czerwiec, T (1999) Low temperature nitriding of AISI 316L stainless steel and titanium in a low pressure arc discharge. Surface and Coatings Technology, 111 (2-3). pp. 128-133. ISSN 0257-8972

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Official URL: http://dx.doi.org/10.1016/S0257-8972(98)00722-1

Abstract

AISI 316L stainless steel (SS) and titanium nitriding were studied in a low pressure arc-assisted nitriding process where the substrate temperature and the plasma parameters are uncoupled. Lower nitriding temperature limits were explored for constant plasma parameters in Ar–N2 gas mixtures and substrates at floating potential. Nitrogen superficial concentration, layer thicknesses and X-ray diffraction analyses were performed on SS specimens nitrided at two temperatures (580 and 680 K) for different times and titanium nitriding was studied in the temperature range 750–1025 K. At low temperature, the nitriding performances are limited by a plasma–surface phenomenon that probably involves recombination of nitrogen atoms.


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