23 January 2007 Laser dispersing of ceramic powders into Al-alloys
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Abstract
The general objective of the work was formation of highly wear resistant metal matrix composite (MMC) surface layers on aluminium based Al 6061 alloy by means of laser dispersing. The surface of the substrate is locally melted by the high power diode laser beam and simultaneously powder particles are injected into molten material. The optimal process parameter window for the laser dispersing of SiC in Al 6061 has been found. The measured values of the wear rates of the sample with dispersed SiC particles are about seven times lower than that of the reference Al-substrates. Results show that laser dispersing is highly promising technology to improve the surface, mainly wear properties of light metals. However the possibilities of industrial application are still limited due to considerable laser beam power and preheating temperature applied as well low productivity because of low scanning speed, and therefore further investigations are required.
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Rafał Jendrzejewski, Karel Van Acker, Dirk Vanhoyweghen, "Laser dispersing of ceramic powders into Al-alloys", Proc. SPIE 6598, Laser Technology VIII: Applications of Lasers, 65980D (23 January 2007); doi: 10.1117/12.726544; https://doi.org/10.1117/12.726544
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