Developement of anticorrosive coatings on magnesium alloy by plasma technique

Abstract

Magnesium alloys have been the object of study their use in various fields of industry because it is a light metal with excellent mechanical properties.
The MgAZ31 alloy stands out due to its biocompatibility, which makes it extremely interesting for use in bone prostheses.
However, its high corrosion rate is an obstacle for this purpose. Once the process begins, the pH around the tissues rises, interfering with cell growth on the surface of the magnesium alloy. The application of protective coatings, with the aim of improving corrosion resistance, is an effective solution to this problem.
In this project, an analysis of the coatings obtained by means of the plasma technique on MgAZ31 alloy will be developed, which allow its use in prostheses, free from the risk of corrosion and low cost.
The main objective is to find a low-cost, biocompatible, highly adherent coating that improves corrosion resistance.
Surface coating using the plasma technique is not new in itself, and has numerous industrial applications, but it has not yet been applied to Mg alloys for this purpose.
The technological feasibility of developing efficient, economical and low environmental impact coatings will make it possible to respond to a pressing problem in the field of medicine as well as in industry.