ПОЛУЧЕНИЕ КАЛЬЦИЙ-ФОСФАТНЫХ ПОКРЫТИЙ МЕТОДОМ МИКРОДУГОВОГО ОКСИДИРОВАНИЯ

Abstract

Abstract. In this review, the history of the development of the microarc oxidation (MAO) method and the current state, as well as chemical, electro-plasma-chemical mechanisms of layer formation, are considered. Various types and stages of the plasma-electrolyte discharge phenomenon have been studied, in addition, the influence of the electrolyte composition and electrical regimes on the morphology and composition of the obtained coatings has been described. The papers devoted to the application of calcium-phosphate coatings by the MAO method on medical titanium alloys to improve the anti-corrosion, wear-resistant and bioactive properties of the coating are considered. Medical titanium alloys with calcium phosphate coating can be used by orthopedists, dentists, and in addition, it is of great interest in the field of creating bioactive biomimetic structures. The advantages of the MAO method are that calcium phosphate coatings can be deposited on implants of various shapes, including porous ones, and this method also makes it possible to obtain coatings with a given phase and elemental composition. Therefore, understanding the effect of electrolytic modes and electrolyte composition for the formation of calcium-phosphate coatings of materials for the replacement and restoration of bone tissue is an urgent problem.

The purpose of this work is to analyze new trends and optimal modes for applying calcium phosphate coatings to medical titanium alloys.