Pulsed plasma nitriding of high velocity oxy-fuel sprayed Inconel 625 coatings

MİNDİVAN H.

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, vol.236, no.10, pp.1950-1961, 2022 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 236 Issue: 10
  • Publication Date: 2022
  • Doi Number: 10.1177/13506501211062522
  • Journal Name: Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.1950-1961
  • Keywords: Corrosion, high velocity oxy-fuel spraying, Inconel 625, pulsed plasma nitriding, tribocorrosion
  • Bilecik Şeyh Edebali University Affiliated: Yes

Abstract

© IMechE 2021.A hardening of high velocity oxy-fuel sprayed Inconel 625 coating systems was performed by pulsed plasma nitriding treatment. After deposition of an Inconel 625 coating, samples were pulsed plasma nitrided at 520 °C for 12 h in a gas ratio of 3:1 N2 and H2 under a constant pressure of 2.5 × 102 Pa. Pulsed plasma nitriding improved the microhardness of the high velocity oxy-fuel sprayed Inconel 625 coating from 355 to 401 HV0.05. The high velocity oxy-fuel-sprayed Inconel 625 coating after pulsed plasma nitriding process showed excellent corrosion resistance as well as a reduction of both the friction coefficient and wear rate during the sliding phase in a 3.5 wt.% NaCl solution against sliding action of Al2O3 ball.