<p>In-situ TiC and ex-situ SiC reinforced Ni-based composite coatings were fabricated on high-chromium cast iron by laser cladding. The microstructure and properties of the cladding layer were characterized by X-ray diffraction (XRD), optical microscopy (OM), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), microhardness, wear and electrochemical polarization tests. The amount of in-situ generated TiC particles increased with increasing (Ti + SiC) addition. Meanwhile, the microstructure of the coating exhibited grain refinement initially and then coarsening. The coatings with different (Ti + SiC) additions exhibited similar phase compositions, predominantly comprising <i>γ</i>-(Fe, Ni) solid solution, FeNi₃, CrSi₂, and carbides such as M₇C₃, M₂₃C₆, TiC and residual SiC. At (Ti + SiC) addition of 50&#xa0;wt.%, the <i>γ</i>-(Fe, Ni) solid solution and FeNi₃ phase were completely replaced by <i>α</i>-(Fe, Ni) solid solution and Ni-Cr-Fe phase. After the addition of (Ti + SiC), the hardness and wear resistance of the coatings increased due to the combined strengthening effect of the newly formed TiC and retained SiC particles. With the increase of (Ti + SiC) addition, the corrosion resistance of the coating increased first and then decreased, and the corrosion resistance reached the optimum at a (Ti + SiC) addition of 30&#xa0;wt.%.</p>