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Laser Melt Injection of TiC Particles into Aluminium Bronze
C.S. Viswanadham, G.L. Goswami, Rolf Galun and B.L. Mordike

Laser melt injection of TiC particles on an aluminium bronze substrate was studied in the present work.Experiments were conducted using nickel-coated and uncoated TiC particles separately. The presence of a nickel coating on the TiC particles was found to help greatly in producing a uniform and defect-free dispersion. The pin-on-disk sliding wear rate of aluminium bronze was reduced to 20%of its original value, and its hardness more than doubled due to this process. The tribological behaviour may have been further improved by the presence of a less hardened zone just below the hardfaced region.

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