Improvement of Tribological Properties by Titanium Nitride Deposition in Titanium Alloys Produced by Powder Metallurgy

Eduardo T. Galvani; V.A.R. Henriques; T.G. Lemos

doi:10.4028/www.scientific.net/MSF.727-728.480

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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Improvement of Tribological Properties by Titanium...

Improvement of Tribological Properties by Titanium Nitride Deposition in Titanium Alloys Produced by Powder Metallurgy

Abstract:

Titanium nitride (TiN) is a hard material, often used as coating to improve the wear properties of titanium alloys in machining, implant and aerospace applications. Electron Beam Physical Vapor Deposition (EB-PVD) is a technique which a target anode is bombarded with an electron beam given off by a charged tungsten filament under high vacuum, producing a thin film in a substrate. In this work, results of TiN films depositions on Ti-13Nb-13Zr substrates by EB-PVD are studied. Titanium targets were obtained by a purified ingot and the substrates produced by powder metallurgy. Sintered samples of Ti-13Nb-13Zr and TiN layers were characterized by X-ray diffraction, scanning electron microscopy, Vickers microhardness and wear tests. The TiN films presented high hardness values, continuity and large thickness. The coatings improved the tribological properties of the substrate due to high adhesion and low wear rate.

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Materials Science Forum (Volumes 727-728)

Pages:

480-485

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.480

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Online since:

August 2012

Authors:

Eduardo T. Galvani, V.A.R. Henriques, T.G. Lemos

Keywords:

Coating, EB-PVD, Powder metallurgy, Titanium Alloy, Titanium Nitride, Wear

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