Medical metal material with modified film with photo-thermal characteristic on surface as well as preparation method and application of medical metal material

The invention relates to a medical metal material with a modified film with photo-thermal characteristics on the surface and a preparation method and application of the medical metal material. And the modified film is a nickel-titanium oxide TimNinO2m + n embedded with nano nickel. The nano nickel is a simple substance and is spherical, and the radius of the nano nickel is 2-20 nm; and the density of the nickel nanoparticles is 5-30 per square micron. The nickel-titanium oxide is of a sheet structure, the length and the width of a sheet layer are 0.5-2 microns, and the thickness of the sheet layer is 10-40 nm. In the preparation method, the nickel-titanium layered double hydroxide is firstly generated, and then the nickel-titanium oxide thin film inlaid with the elemental nickel is obtained through heating reduction. The cost of the constructed nano nickel is obviously reduced, and meanwhile the problems that non-noble metal nano metal particles are prone to being oxidized, and the photo-thermal effect cannot