On the Applicability of Iron-Based Coatings Against Abrasion and Cavitation Erosion Wear

Tommi Varis (Corresponding Author), Juha Lagerbom, Tomi Suhonen, Sakari Terho, Jussi Laurila, Petri Vuoristo

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

Iron-based coatings are often considered as replacement of hard chromium and WC-Co, as they pose lower health and environmental impact. In many cases, the combination of mechanical and chemical properties of iron-based alloys may be satisfactory and their relatively low cost makes these coatings an interesting candidate for many applications. This study is inspired by opportunities to harden the iron-base materials by strain hardening, solid solution strengthening, and precipitation hardening. Already commercially available Fe-based coating materials with precipitates of mixed carbides and borides in the metastable austenitic matrix achieve a high hardness. In this study, the cavitation erosion and abrasion resistance of various Fe-based coatings produced by HVAF and HVOF processes were investigated. Four experimental precipitates containing materials were prepared, and the sprayed coatings were tested for abrasive wear and cavitation erosion. In addition to precipitates, the contributions of martensite and retained austenite phases were investigated by influencing the microstructure through heat treatments, as the ability of these phases to influence ductility and toughness can be crucial to achieve the desired material properties. The properties of experimental and two commercial Fe-based alloys are compared with WC-Co and Cr3C2-NiCr coatings by property mapping.

Original languageEnglish
Pages (from-to)473-487
JournalJournal of Thermal Spray Technology
Volume32
Issue number2-3
DOIs
Publication statusPublished - Mar 2023
MoE publication typeA1 Journal article-refereed
EventInternational Thermal Spray Conference and Exposition, ITSC 2022 - Austria Center Vienna, Vienna, Austria
Duration: 4 May 20226 May 2022

Keywords

  • abrasion
  • cavitation erosion
  • chrome replacement
  • HVAF
  • HVOF
  • iron alloys
  • wear resistant coatings

Fingerprint

Dive into the research topics of 'On the Applicability of Iron-Based Coatings Against Abrasion and Cavitation Erosion Wear'. Together they form a unique fingerprint.

Cite this