Surface property enhancement of Ni-free medical grade austenitic stainless steel by low-temperature plasma carburising

J Buhagiar, L Qian, Hanshan Dong

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Based on the success of the feasibility study reported, the surface properties of low-temperature plasma carburised P558 Ni-free medical grade (ASTM F2581) austenitic stainless steel have been fully evaluated in terms of electrochemical corrosion, dry- and corrosion-wear and fretting-wear in Ringer's solution Anodic polarization tests demonstrated that the precipitate-free S-phase generated by low-temperature plasma carburising at 500 degrees C for 15 h can retain the good corrosion resistance of the untreated ASTM F2581 NI-Free material in Ringer's solution. The wear resistance of the NI-free austenitic stainless steel can be improved by 700% and 140% when reciprocating against a WC ball in air (dry-wear) and in Ringer's solution (corrosion-wear) respectively In addition, the low-temperature plasma carburising treatment can considerably reduce the friction coefficient and improve the fretting-wear resistance of the Ni-free austenitic stainless steel in Ringer's solution (C) 2010 Elsevier B.V. All rights reserved
Original languageEnglish
Pages (from-to)388-395
Number of pages8
JournalSurface and Coatings Technology
Volume205
Issue number2
DOIs
Publication statusPublished - 1 Oct 2010

Keywords

  • Corrosion-wear
  • S-phase
  • Nickel free austenitic stainless steel
  • Fretting-wear
  • Expanded austenite
  • Plasma carburising

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