Rezumat
CZU 620.197: 621.794
In this review an experience of plasma-electrolyte methods using for characteristics improvement of valve metals is systematized. The main attention is given to coatings formation by the microarc oxidation (MAO) method in the electrolytes-suspensions containing powders of various degree of dispersion (from nanometers to tens microns) and of the different nature (oxides, carbides, nitrides, borides, graphite, etc.). The phenomenological model of the forming mechanism of the MAO-coatings formed in electrolytes-suspensions is presented, the characteristics of electrolytes and coatings are provided. Results of own researches of the MAO-coatings structure by the method of nuclear backscattering spectrums modeling are described. Significant improvement of properties of the MAO-coatings created in electrolytes-suspensions is noted. This modifying is capable to expand essentially borders of application of MAO-method for aerospace, in medicine, biology, technologies of live systems.
Keywords: microarc oxidation, electrolytes suspensions, surface morphology, corrosion, tribology, valve metals.