Effect of Y2O3 Addition on the Microstructure and Corrosion Behaviour of Laser Cladding of Al Powder on ZM5 Magnesium Alloys

Abstract:

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The aim of this work was to improve the surface layer properties of the Mg-Al-Zn cast ZM5 magnesium alloys by melting and preplaced Al powder or Al+Y2O3 powder on the surface. Laser processing was carried out using high power continuous wave CO2 laser. The resulting surface layers were examined using metallographic light microscopy, scanning electron microscopy, X-ray diffraction. The corrosion resistance was detected by potendiodynamic polarization test. The morphology of the Al cladding coatings are dendrities. And the coatings have excellent corrosion resistance compared to the untreated ZM5 substrate. The enhanced corrosion resistance coating doped with Y2O3 was attributed to the refined microstructure induced by Y2 O3

Info:

Periodical:

Advanced Materials Research (Volumes 314-316)

Edited by:

Jian Gao

Pages:

1867-1870

DOI:

10.4028/www.scientific.net/AMR.314-316.1867

Citation:

C. J. Chen et al., "Effect of Y2O3 Addition on the Microstructure and Corrosion Behaviour of Laser Cladding of Al Powder on ZM5 Magnesium Alloys", Advanced Materials Research, Vols. 314-316, pp. 1867-1870, 2011

Online since:

August 2011

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$35.00

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