Multicomponent TiSiBC superhard and tough composite coatings by magnetron sputtering

► Hard and tough nanocomposite TiSiBC coatings have been achieved. ► The hardness and modulus of 45 GPa and 520 GPa ► The fracture toughness KIc 4.5-5 MPa m1/2 higher than many reported hard coatings ► The film showed less than 0.1 value for coefficient of friction.