Reinforced SiC/Al Composite Layer Produced By Laser Particle Injection
Free (open access)
J.A. Vreeling, V. Ocelik, Y.T. Pei & J.T.M. De Hosson
SiC particles with a mean size of 80 jam were injected into Al substrate by the laser particle injection process with the aim to improve the surface properties of aluminium. Experimental difficulties induced by the big difference in absorptivity of laser energy between Al and SiC lead to an extremely small operational window of processing parameters. A combination of parameters of Nd:YAG laser beam, SiC powder stream and Al substrate pre-heating temperature which leads to the formation of single laser tracks was found experimentally. The injection depth is discussed from the point of view of a simple injection model.