In previously reported work [1-4] high-power CO2 lasers were used to produce Ti/SiC or TiC composite
layers, approximately 1 mm thick, by the injection of the ceramic particles into the laser-melted zone of
titanium and titanium alloys. The dimensions of these layers and the volume fractions of the ceramic
particles were closely related to the laser processing parameters (e.g. the traverse speed and powder flow
rate). For example, the results of the injection of SiC particles into commercial purity Ti plate showed [1]
that the width and the thickness of the surface layer increased with decreasing traverse speed and the
volume fraction of SiC particles incorporated increased with in were nucleated