Abstract: The present disclosure describes a coated implant for bone repair that is biodegradable. The coated implant includes an implant body formed from a magnesium alloy, and a porous ceramic coating disposed on at least a portion of an outer surface of the implant body. The porous ceramic coating can include MgO, Mg(OH)2, Mg3(PO4)2, and oxides of alloying elements of magnesium.

Abstract: A medical implant comprises a biodegradable magnesium-based alloy of which at least a part of its surface layer comprises a magnesium carbonate. A method for the manufacture of a biocompatible, corrosion-inhibiting protective surface layer on a medical implant comprising a magnesium-based alloy, comprises: providing an implant comprising a magnesium-based alloy to be coated; placing the implant into a reactor chamber; exposing at least part of the surface of said implant to an atmosphere comprising humid carbon dioxide to produce a coating on the surface of the implant comprising a magnesium carbonate of the formula x MgCO3.y Mg(OH)2, whereby x+y=1; removing the implant from the reactor chamber; and drying the surface of the implant.

Abstract: The present disclosure describes a coated implant for bone repair that is biodegradable. The coated implant includes an implant body formed from a magnesium alloy, and a porous ceramic coating disposed on at least a portion of an outer surface of the implant body.

Abstract: A medical implant comprises a biodegradable magnesium-based alloy of which at least a part of its surface layer comprises a magnesium carbonate. A method for the manufacture of a biocompatible, corrosion-inhibiting protective surface layer on a medical implant comprising a magnesium-based alloy, comprises: providing an implant comprising a magnesium-based alloy to be coated; placing the implant into a reactor chamber; exposing at least part of the surface of said implant to an atmosphere comprising humid carbon dioxide to produce a coating on the surface of the implant comprising a magnesium carbonate of the formula x MgCO3·y Mg(OH)2, whereby x+y=1; removing the implant from the reactor chamber; and drying the surface of the implant.

Abstract: The present disclosure is directed, at least in part, to a method of producing ceramic layers on magnesium and its alloys, a magnesium implant with a ceramic layer made by the method, and a magnesium implant having a biocompatible ceramic layer substantially free of material which impairs the biocompatibility of said biocompatible ceramic layer.

Abstract: A medical implant comprises a biodegradable magnesium-based alloy of which at least a part of its surface layer comprises a magnesium carbonate. A method for the manufacture of a biocompatible, corrosion-inhibiting protective surface layer on a medical implant comprising a magnesium-based alloy, comprises: providing an implant comprising a magnesium-based alloy to be coated; placing the implant into a reactor chamber; exposing at least part of the surface of said implant to an atmosphere comprising humid carbon dioxide to produce a coating on the surface of the implant comprising a magnesium carbonate of the formula x MgCO3.y Mg (OH)2, whereby x+y=1; removing the implant from the reactor chamber; and drying the surface of the implant.

Abstract: A medical implant comprises a biodegradable magnesium-based alloy of which at least a part of its surface layer comprises a magnesium carbonate. A method for the manufacture of a biocompatible, corrosion-inhibiting protective surface layer on a medical implant comprising a magnesium-based alloy, comprises: providing an implant comprising a magnesium-based alloy to be coated; placing the implant into a reactor chamber; exposing at least part of the surface of said implant to an atmosphere comprising humid carbon dioxide to produce a coating on the surface of the implant comprising a magnesium carbonate of the formula x MgCO3·y Mg (OH)2, whereby x+y=1; removing the implant from the reactor chamber; and drying the surface of the implant.

Abstract: The invention relates to a method for producing corrosion-inhibiting coatings on an implant made of a biocorrodible magnesium alloy and to implants obtained or obtainable according to the method.

Abstract: A method for producing a corrosion-inhibiting coating on an implant made of a biocorrodible magnesium alloy, the method comprising providing the implant; and treating the implant surface using an aqueous or alcoholic conversion solution containing one or more ions selected from the group consisting of K+, Na+, NH4+, Ca2+, Mg2+, Zn2+, Ti4+, Zr4+, Ce3+, Ce4+, PO43?, HPO42?, H2PO4?, OH?, B33?, B4O72?, SiO32?, MnO42?, MnO4?, VO3?, WO42?, MoO42?, TiO32?, Se2?, ZrO32?, and NbO4?, wherein the concentration of the ion or ions is in the range of from 0.01 mol/l to 2 mol/l. An implant produced by this method is also disclosed.

Abstract: A method of producing oxide ceramic layers on Al, Mg, Ti, Ta, Zr, Nb, Hf, Sb, W, Mo, V, Bi or their alloys by a plasma-chemical anodical oxidation in a chloride-free electrolytic bath having a pH value of 2 to 8 and a constant bath temperature of -30.degree. to +15.degree. C. A current density of at least 1 A/dm.sup.2 is maintained constant in the electrolytic bath until the voltage reaches a predetermined end value.

Abstract: A method of producing oxide ceramic layers on Al, Mg, Ti, Ta, Zr, Nb, Hf, Sb, W, Mo, V, Bi or their alloys by a plasma-chemical anodical oxidation in a chloride-free electrolytic bath having a pH value of 2 to 8 and a constant bath temperature of -30.degree. to +15.degree. C. A current density of at least 1 A/dm.sup.2 is maintained constant in the electrolytic bath until the voltage reaches a predetermined end value.