ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In this work, some surface properties of AISI M2 steel were improved by a thermoreactivedeposition process. Gas nitriding was realized on AISI M2 steel at 550°C for 2 h in anammoniac atmosphere and then, titanizing treatment performed on pre-nitrided steel in the powdermixture consisting of ferro-titanium, ammonium chloride and alumina at 1000°C for 1-4 h.Structural characterization of titanium nitride layer formed on the surface of AISI M2 steel wascarried out by using optical microscopy, scanning electron microscopy, electron microprobe and Xraydiffraction (XRD) analysis. The hardness measurements of titanium nitride layer wereconducted under 10 g loads by using Vickers microhardness indenter. Structural analysis studiesshowed that titanium nitride layers formed on the AISI M2 steel samples were smooth, compact andhomogeneous. XRD analysis show that the coating layer formed on the steel samples includes TiN,Fe6Mo7N2, C0.7N0.3Ti, C0.3N0.7Ti and V2N phases. The hardness of titanium nitride layers formed onthe steel samples is between 2040±186 and 2418±291 HV0.01. The thickness of titanium nitridelayer formed on the steel samples ranged from 3.86±0.43 9m to 6.13±0.47 9m, depending ontreatment time
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.554.219.pdf
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