Evaluation of modulus of elasticity, nano-hardness and fracture toughness of TiB2-TiC-Al2O3 composite coating developed by SHS and laser cladding

► TiB2-TiC-Al2O3 coating developed by laser cladding possesses high hardness. ► Composite coating has more toughness than monolithic coatings of TiB2, TiC or Al2O3. ► Moduli of elasticity of coating and substrate are close, which is good for bonding. ► The wear behavior of coating is correlated to H, E and H/E values. ► A qualitative study of coating-substrate interfacial strength is performed.