Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1648510 | Materials Letters | 2010 | 4 Pages |
Abstract
The aim of the present work was to combine the high strength of Al-Si alloys produced via Rapid Solidification (RS) and Spray Forming (SF) with a wear resistant surface coating, designed for high temperature use. The surface coating, composed mainly of nickel and chromium, was applied in a two step process: plasma spray followed by laser surface alloying using a diode laser. The microstructure and hardness of the surface coating were analysed. In the Al-Si alloys produced via Rapid Solidification, gas bubble formation was observed during the laser alloying process. In the Spray Formed alloys, globules of the coating material and a needle-like microstructure formed, in detriment to the mechanical properties of the alloyed layer.
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Physical Sciences and Engineering
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Authors
M. Gurutze Pérez Artieda, A. Cortiella, N.R. Harlan, F. Zapirain, F. Zubiri,