Paper Title:
Preparation and Hardness Behavior of Al-Based Amorphous/Nanocrystalline Composite Coatings on Mg Alloy Prepared by High Velocity Arc Spraying Process
  Abstract

High velocity arc spraying (HVAS) process was used to deposit Al-Ni-Y-Co and Al-Ni-Mm-Fe amorphous/nanocrystalline composite coatings onto AZ91 Mg alloy substrate. Their microstructure was characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The coatings are both about 500 μm in thickness with fully dense and low porosity. The microstructure of the coatings is classified into two regions, namely, a full amorphous phase region and homogeneous dispersion of fcc-Al and some intermetallic nanoscale particles in a residual amorphous matrix region. Vickers micro hardness of the coatings was also measured. The average Vickers micro hardness of Al-Ni-Y-Co and Al-Ni-Mm-Fe coating is about 311 HV and 340 HV, respectively.

  Info
Periodical
Chapter
Chapter 1: Frontiers of Nanoscience and Technology
Edited by
Ran Chen
Pages
256-260
DOI
10.4028/www.scientific.net/MSF.694.256
Citation
Z. B. Zhang, X. B. Liang, Y. X. Chen, B. S. Xu, "Preparation and Hardness Behavior of Al-Based Amorphous/Nanocrystalline Composite Coatings on Mg Alloy Prepared by High Velocity Arc Spraying Process", Materials Science Forum, Vol. 694, pp. 256-260, 2011
Online since
July 2011
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