Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2011-01-15

Journal: APPLIED SURFACE SCIENCE

Included Journals: EI、SCIE

Volume: 257

Issue: 7

Page Number: 3097-3102

ISSN: 0169-4332

Key Words: Intermetallics compounds coating; Arc spray processing; Post-heat treatment; Diffusion

Abstract: A Mg-Al intermetallic compounds coating was prepared on the surface of Mg-steel lap joint by arc-sprayed Al-Mg composite coating (Mg-cathode and Al-anode) and its post-heat treatment (PHT). The effect of PHT temperature on the phase transition, microstructure and mechanical properties of the coating was investigated by X-ray diffraction, scanning electron microscope, energy dispersive X-ray spectroscopy, optical microscope and microhardness test. The result shows that the intermetallic compounds layer that is mainly composed of Al(3)Mg(2) and Mg(17)Al(12) is formed by the self-diffusion reaction of Mg and Al splats in the coating after PHT for 4 h at 430 degrees C. (C) 2010 Elsevier B.V. All rights reserved.