Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22465
Title: In situ laser cladding of Al2O3 bearing coatings on aluminium alloy 7075 for improvement of wear resistance
Authors: Yue, TM 
Huang, KJ
Man, HC 
Keywords: Aluminium alloy
Aluminium oxide
In situ
Laser cladding
Thermite reaction
Wear
Issue Date: 2007
Source: Surface engineering, 2007, v. 23, no. 2, p. 142-146 How to cite?
Journal: Surface Engineering 
Abstract: The wear properties of Al2O3 bearing coatings, produced by in situ laser Induced thermite reactions fabricated on aluminium alloy 7075, were examined. The thermite reactions were initiated by the laser cladding of mixed powders of CuO-Al, Cr2O3-Al and TiO 2-Al. In order to improve the quality of the laser formed coatings, the laser cladding involved two passes of melting. The results of the XRD and XPS analyses showed that in all the three reaction systems, a reaction layer which comprised mainly Al2O3 and Al phases was formed. Under dry sliding conditions, the wear resistance, in terms of weight loss, of the laser cladded specimens was considerably higher than that of the uncladded specimens. The predominant wear mechanism of the former specimens was found to be characterised by abrasive, while with the latter specimens, it was the adhesive wear that prevailed.
URI: http://hdl.handle.net/10397/22465
ISSN: 0267-0844
DOI: 10.1179/174329407X169449
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