Strontium containing hydroxyapatite biologically active film and preparation method thereof

Abstract

The invention relates to the means of active biological film, especially the titanium radicel porous nanometer Strontium hydroxyapatite active biological film and the Process for the manufacture. The differential arc oxidation technology is used in the method, the film is generated in the surface of titanium and titanium alloy, a electrolyte solution with phosphate radical ion, calcium ion and Strontium ion is supplied; the titanium and titanium alloy is the anode and the rustless steel or the titanium is the cathode, the direct current power supply or the direct current impulsing power source is applied to differential arc oxygenize the titanium and titanium alloy; the oxidate time is 3-60min; the temperature of electrolyte is not above 50DEG C. There is no interface between the porous hydroxyapatite containing Strontium film produced by the invention and the basal body, the modulus of elasticity is approximate with the sclerotin, the porous hydroxyapatite containing Strontium film produced by the invention which has perfect bioactivity can be the alternate material of several parts with heavy load, such as femur, hip joint and teeth root.

Description

technical field

[0001] The invention relates to a method for preparing a biologically active film layer on the surface of a medical metal material, in particular to a titanium-based porous nanometer-containing strontium-containing hydroxyapatite bioactive film layer and a preparation method thereof. Background technique

[0002] In recent years, the development and application of various biomedical materials have developed rapidly, among which metal materials were the first to be used. Metal biomaterials generally have high strength and toughness, and are suitable for hard tissue repair and fixation. Commonly used metallic biomaterials include cobalt injection. However, due to the surface hardness of titanium and titanium alloys, low-base alloys, tantalum, titanium and titanium alloys, etc., among them, titanium and its alloys have excellent corrosion resistance, high specific strength, good biocompatibility and are suitable for implantation. It has...