Studies on the electro-mechanical polishing effects of titanium alloy with ion-exchange resin solid particles

Recently it is emerging to a green electro-mechanical polishing method with ion-exchange resin solid particles saturating with acid electrolyte for metallic parts. The paper utilized this process for polishing Ti6Al4V alloy samples and investigated the changes of subsequent surface morphology and electrochemical property. Surface roughness of the polished specimens decreased apparently. However, there appeared local corrosion pits when the polishing time surpassed 1 h. Electrochemical analysis of polished samples shows that the corrosion potential shifts positively and then negatively and the polishing process can be regarded as a concurrent process of titanium oxide film growth, dissolution and wear in the conditions of the electric field. (C) 2020 Published by Elsevier B.V.

Automated summary

By utilizing the green electro-mechanical polishing method, surface roughness of metallic parts can be effectively reduced, although prolonged polishing time may result in the formation of local corrosion pits.