Characterization of titanium chromium nitride nanocomposite protective coatings

S. M. Aouadi, K. C. Wong, K. A.R. Mitchell, F. Namavar, E. Tobin, D. M. Mihut, S. L. Rohde

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

The structural, chemical, optical and mechanical properties of titanium chromium nitride nanocrystalline films deposited by ion beam-assisted deposition were studied by means of X-ray diffraction, X-ray photoelectron spectroscopy, spectroscopic ellipsometry, nanoindentation and wear testing. Coatings were deposited on silicon and stainless steel substrates with growth temperatures of 150 and 400 °C. The concentration of titanium and chromium in the film was regulated by controlling their evaporation rates. The nitrogen concentration was controlled by varying the nitrogen ion current. X-ray diffraction and X-ray photoelectron spectroscopy measurements indicated that the films deposited at 150 °C formed solid solutions whereas those produced at 400 °C formed nanocomposites. The optical constants were measured using spectroscopic ellipsometry. A correlation between the elemental/phase composition and optical constants was established. The mechanical properties of the coatings were evaluated using nanohardness testing and were found to depend on composition. The nanocomposite films were the hardest (hardness of 30 GPa and elastic modulus of 300 GPa). Tribological properties of titanium chromium nitride coated 440 C stainless steel coupons were evaluated using a ball-on-disk tribometer. These tests were conducted under a load of 50 N for 1.5 million cycles at 180 rpm. Coatings deposited at high temperature did not show any signs of wear.

Original languageEnglish (US)
Pages (from-to)387-394
Number of pages8
JournalApplied Surface Science
Volume229
Issue number1-4
DOIs
StatePublished - May 15 2004

Fingerprint

protective coatings
Protective coatings
Chromium
Titanium
Nitrides
nitrides
chromium
Nanocomposites
nanocomposites
Optical constants
Spectroscopic ellipsometry
titanium
Stainless Steel
Coatings
Nitrogen
Stainless steel
X ray photoelectron spectroscopy
coatings
Wear of materials
Nanohardness

Keywords

  • Ellipsometry
  • Nanostructures
  • Nitrides
  • Sputtering
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Aouadi, S. M., Wong, K. C., Mitchell, K. A. R., Namavar, F., Tobin, E., Mihut, D. M., & Rohde, S. L. (2004). Characterization of titanium chromium nitride nanocomposite protective coatings. Applied Surface Science, 229(1-4), 387-394. https://doi.org/10.1016/j.apsusc.2004.02.019

Characterization of titanium chromium nitride nanocomposite protective coatings. / Aouadi, S. M.; Wong, K. C.; Mitchell, K. A.R.; Namavar, F.; Tobin, E.; Mihut, D. M.; Rohde, S. L.

In: Applied Surface Science, Vol. 229, No. 1-4, 15.05.2004, p. 387-394.

Research output: Contribution to journalArticle

Aouadi, SM, Wong, KC, Mitchell, KAR, Namavar, F, Tobin, E, Mihut, DM & Rohde, SL 2004, 'Characterization of titanium chromium nitride nanocomposite protective coatings', Applied Surface Science, vol. 229, no. 1-4, pp. 387-394. https://doi.org/10.1016/j.apsusc.2004.02.019
Aouadi SM, Wong KC, Mitchell KAR, Namavar F, Tobin E, Mihut DM et al. Characterization of titanium chromium nitride nanocomposite protective coatings. Applied Surface Science. 2004 May 15;229(1-4):387-394. https://doi.org/10.1016/j.apsusc.2004.02.019
Aouadi, S. M. ; Wong, K. C. ; Mitchell, K. A.R. ; Namavar, F. ; Tobin, E. ; Mihut, D. M. ; Rohde, S. L. / Characterization of titanium chromium nitride nanocomposite protective coatings. In: Applied Surface Science. 2004 ; Vol. 229, No. 1-4. pp. 387-394.
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