Biocorrodible implant having a corrosion-inhibiting coating

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Implant comprises : (a) an implant material made of magnesium or a biocorrodible magnesium alloy, forming a base; (b) a diffusion layer covering the base, comprising at least one metallic element of the implant material and at least one corrosion inhibiting element; (c) optionally a metal layer covering the diffusion layer, made of at least one corrosion inhibiting element; and (d) optionally a passivating layer covering the diffusion layer or the metal layer, made of metal oxides, -nitrides or -fluorides of at least one corrosion inhibiting element. Implant comprises : (a) an implant material made of magnesium or a biocorrodible magnesium alloy, forming a base; (b) a diffusion layer covering the base, which differs in its composition from the implant material, and comprises at least one metallic element of the implant material and at least one corrosion inhibiting element comprising aluminum, zinc, calcium, silicon, indium, manganese, scandium or rare earth metals; (c) optionally a metal layer covering the diffusion layer, made of at least one corrosion inhibiting element comprising aluminum, zinc, calcium, silicon, indium, manganese, scandium or rare earth metals; and (d) optionally a passivating layer covering the diffusion layer or the metal layer, made of metal oxides, -nitrides or -fluorides of at least one corrosion inhibiting element comprising aluminum, zinc, calcium, silicon, indium, manganese, scandium or rare earth metals. An independent claim is also included for surface modification of an implant, comprising (i) providing an untreated implant having an implant material made of magnesium or a biocorrodible magnesium alloy, forming a base, (ii) contacting the surface of the base with the corrosion inhibiting element, and (iii) thermally treating the implant at least in the region of the contact surface, under the formation of the diffusion layer covering the base, which is carried out simultaneous or subsequent to the step (ii).