Characterisation of TiAlN PVD coatings on AZ31 magnesium alloy

Characterisation of TiAlN PVD coatings on AZ31 magnesium alloy Titanium aluminum nitride (TiAlN) coatings were deposited by radio frequency magnetron sputtering on AZ31 magnesium alloy. A microhardness tester, a surface profilometer and an electrochemical systems were used to investigate the hardness, thickness, and corrosion resistance of the coated AZ31 magnesium alloy. XPS showed the presence of different phases such as TiN, TiO2, TiON, AlN, and Al2O3. It demonstrated that TiAlN coatings improved the magnesium alloy’s surface hardness. Furthermore, TiAlN coatings also enhanced the corrosion resistance of the AZ31 magnesium alloy in 3.5 wt% NaCl solution. Corrosion current density decreased from 2.820 × 10−7 A/cm2 for the coated alloy to 1.066 × 10−5 A/cm2 for the uncoated one. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Characterisation of TiAlN PVD coatings on AZ31 magnesium alloy

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Publisher
Springer Journals
Copyright
Copyright © 2013 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-013-1270-5
Publisher site
See Article on Publisher Site

Abstract

Titanium aluminum nitride (TiAlN) coatings were deposited by radio frequency magnetron sputtering on AZ31 magnesium alloy. A microhardness tester, a surface profilometer and an electrochemical systems were used to investigate the hardness, thickness, and corrosion resistance of the coated AZ31 magnesium alloy. XPS showed the presence of different phases such as TiN, TiO2, TiON, AlN, and Al2O3. It demonstrated that TiAlN coatings improved the magnesium alloy’s surface hardness. Furthermore, TiAlN coatings also enhanced the corrosion resistance of the AZ31 magnesium alloy in 3.5 wt% NaCl solution. Corrosion current density decreased from 2.820 × 10−7 A/cm2 for the coated alloy to 1.066 × 10−5 A/cm2 for the uncoated one.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: May 25, 2013

References

  • Electrochemical behaviour of AZ61 magnesium alloy in dilute NaCl solutions
    Wang, L; Shinohara, T; Zhang, B-P
  • Electrodeposition of high corrosion resistance Cu/Ni-P coating on AZ91D magnesium alloy
    Zhang, S; Cao, F; Chang, L
  • The preparation and corrosion behaviors of MAO coating on AZ91D with rare earth conversion precursor film
    Cai, J; Cao, F; Chang, L
  • Tribological properties of the Ti-Al-N thin films with different components fabricated by double-targeted co-sputtering
    Li, X; Li, C; Zhang, Y
  • XPS analysis of aluminum nitride films deposited by plasma source molecular beam epitaxy
    Rosenberger, L; Baird, R; McCullen, E

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