WIT Press

Reinforced SiC/Al Composite Layer Produced By Laser Particle Injection

Price

Free (open access)

Paper DOI

10.2495/SURF990241

Volume

25

Pages

1

Published

1999

Size

81 kb

Author(s)

J.A. Vreeling, V. Ocelik, Y.T. Pei & J.T.M. De Hosson

Abstract

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.

Keywords