Paper Title:
Effect of Heat Treatments on the Structural and Mechanical Properties of Ti Thin Films Deposited on Steel Substrates by PVD Method
  Abstract

Titanium carbides are well known materials with great scientific and technological interest. The applications of these materials take advantage of the fact that they are very hard, refractory and that they have metallic properties. In this work, we have studied the influence of the heat treatment temperatures (400-1000°C) on the interaction between the titanium thin films and steel substrates. Steel substrates, 100C6 type (AFNOR norms) containing approximately 1 wt % of carbon were coated at 200°C with titanium thin films by magnetron sputtering. The samples were characterized by X-ray diffraction (XRD) and Auger electron spectroscopy (AES). Vikers micro-hardness measurements carried out on the annealed samples showed that the micro-hardness increases with annealing temperature, reaches a maximum (3500 kg/mm2), then decreases progressively. The growth of micro-hardness is due to the diffusion of the carbon, and to the formation of titanium carbide. However, the decrease of micro-hardness is associated with the diffusion of iron and the formation of iron oxide (Fe2O3). At higher temperatures, we note the formation of titanium dioxide (TiO2).

  Info
Periodical
Defect and Diffusion Forum (Volumes 297-301)
Edited by
Andreas Öchsner, Graeme E. Murch, Ali Shokuhfar and João M.P.Q. Delgado
Pages
88-92
DOI
10.4028/www.scientific.net/DDF.297-301.88
Citation
R. Gheriani, R. Halimi, "Effect of Heat Treatments on the Structural and Mechanical Properties of Ti Thin Films Deposited on Steel Substrates by PVD Method", Defect and Diffusion Forum, Vols. 297-301, pp. 88-92, 2010
Online since
April 2010
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$32.00
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