The effect of powder composition on the morphology of in situ TiC composite coating deposited by Laser-Assisted Powder Deposition (LAPD)

In this paper, the effect of powder composition on in situ TiC formation within an Fe-based matrix coating during laser cladding was studied. Different atomic ratios of C:Ti (45% and 55%) were selected in order to adjust the matrix from an FeTi-based composition to an FeC-based one. Fe percentages of 70, 60, 50 and 10wt% were explored to increase the volume fraction of TiC in the clad. Results showed that chemical composition affects the TiC …