Machines. Technologies. Materials.
Vol. 18 (2024), Issue 2, pg(s) 53-58

TECHNOLOGIES

Improvement of the surface properties of titanium products by reactive electro-spark processing. A short rеview

  • 1 Technical University of Sofia, Bulgaria Kliment Ochridski Blvd. Bulgaria
  • 2 ISSAPP N.Pushkarov – Agricultural Academy – Sofia, Bulgaria
  • 3 MISIS - Moscow, RU Moscow, Russia

Abstract

This work presents a brief overview of the essence, principles and technological features of reactive electrospark processing (RESP), based on a simple, economical and ecological method – electrospark deposition (ESD), which avoids many of the disadvantages inherent in other existing methods. This treatment can optimize the physicochemical properties of the substrate surface and improve the structure, hardness and wear resistance. The application of RESP technology in surface modification of titanium alloys is considered. Research results, including those of the authors of this work, are presented, which demonstrate the possibilities of RESP for reducing
roughness and surface defects and for the synthesis of new phases and ultrafine structures that are not present in the electrode and substrate. The effect of RESP technology on the wear resistance of titanium and titanium alloys is shown. The main dependences of the quality and properties of the treated surfaces on the process parameters are identified, and ways to form reaction phases, to avoid and remove surface defects and to obtain “in-situ” new intermetallic and wear-resistant compounds are presented. The possibilities and prospects for the use of RESP to improve the surface characteristics and properties of titanium and its alloys are indicated.

Keywords

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