Mechanical properties of Al2O3/Al bi-layer coated AZ91 magnesium alloy

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)5357-5360
Journal / PublicationThin Solid Films
Volume517
Issue number17
Publication statusPublished - 1 Jul 2009

Abstract

An Al2O3/Al bi-layered coating has been successfully deposited on AZ91 magnesium alloy using a filtered cathodic arc deposition system and favorable corrosion resistance has been demonstrated by our previous experiments. In this work, the mechanical properties of an Al2O3/Al bi-layered coating are studied by nanoindentation and nanoscratch. X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and scanning electron microscopy (SEM) are employed to characterize the structure of the coating. The surface hardness and elastic modulus of coated alloy are found to be enhanced dramatically. The coating also exhibits excellent bonding strength. In addition, the failure process of the coating during scratch is discussed. © 2009 Elsevier B.V. All rights reserved.

Research Area(s)

  • Al2O3/Al bi-layered coating, Bonding strength, Hardness, Magnesium alloy, Mechanical properties

Citation Format(s)

Mechanical properties of Al2O3/Al bi-layer coated AZ91 magnesium alloy. / Xin, Yunchang; Huo, Kaifu; Hu, Tao; Tang, Guoyi; Chu, Paul K.

In: Thin Solid Films, Vol. 517, No. 17, 01.07.2009, p. 5357-5360.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal