Research of plasma electrolytic coatings on ultrafine-grained titanium Grade 4

Abstract

The paper discusses experimental study for the coatings formed by plasma electrolytic oxidation (PEO) on ultrafine-grained titanium Grade 4 samples. The influence of technological parameters: treatment time, frequency of the voltage pulses, temperature, concentration and composition of the electrolyte was evaluated with respect to the properties of the PEO coating. The morphology and phase composition of the coating were investigated. Proposed PEO regimes allowing to obtain the most promising coatings for titanium implants were identified. A comparison of the results obtained on ultrafine-grained and coarse-grained substrates was also given.