A kind of micro-arc oxidation solution and application of strontium-containing biological coating on titanium alloy

Abstract

The invention discloses a micro-arc oxidation solution for a titanium alloy strontium-containing biological coating. The micro-arc oxidation solution contains Sr(OH)2 with the concentration being 1-3 g / L or Sr(OH)2.8H2O with the concentration being 2-6 g / L, Na2SiO3 with the concentration being 4-8 g / L, NaH2PO4 with the concentration being 2-4 g / L, triethanolamine with the concentration being 2-4 g / L, Na2B4O7 with the concentration being 1-2 g / L and glycerol with the concentration being 5-10 ml / L, and a solvent is deionized water. The invention further provides application of the micro-arc oxidation solution. Titanium alloy is added into the micro-arc oxidation solution, a direct current pulse power source is adopted, voltage is controlled at 200-600 V, the current density is 0.1-0.4 A / dm<2>, the solution temperature is lower than 60 DEG C, time is 20-120 min, and the strontium-containing biological coating is formed on the surface of the titanium alloy. Compared with other medial titanium alloy surface treatment technology, the micro-arc oxidation solution has the beneficial effects of being high in treatment efficiency, firm in combination of a film layer and a base body and the like. Besides, because strontium, phosphorus and other active elements are added into the film layer, the biological activity is superior to that of an existing titanium alloy micro-arc oxidation treatment method.

Description

Technical field [0001] The invention belongs to the field of materials science, and relates to a titanium alloy, specifically a micro-arc oxidation solution of a titanium alloy containing strontium biological coating and its application. Background technique [0002] Bone defects and fractures have become a serious social problem affecting people's health and life. At present, there are few bone repair biomaterials, incomplete varieties and specifications, and difficulty in meeting the needs of clinical surgery. Therefore, research and development of bone repair materials can not only heal the body of the disabled, but also have huge social and economic benefits. Among the materials used for bone repair and replacement are metals and alloys, bioceramics, polymers, composite materials, and human and animal bone derivatives. Under the complex stress conditions of the bone and joint system, the repair material is not only required to have no toxic side effects and biological safet...

AI Technical Summary

Problems solved by technology

[0013] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a micro-arc oxidation solution formulation and application of a titanium alloy strontium-containing biological coating, and the micro-arc oxidation solution of the titanium alloy strontium-containing biological coating The formula and its application should solve the technical problem that the biological activity of titanium alloy in the prior art is not strong

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