Surface modification of austenitic stainless steel with plasma nitriding for biomedical applications

Keng Liang Ou, Hsin Hua Chou, Chung Ming Liu, Pei Wen Peng

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In the present study, plasma nitriding of AISI type 303 austenitic stainless steel (SS) specimens was performed using a microwave system. The nitrided layers were characterized by performing scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and a Vickers microhardness test. The antibacterial activities of the nitrided layers were evaluated. XRD and TEM showed that a single γN phase was formed by plasma nitriding at the plasma power of 700W and 450°C. The analytical results demonstrated that the hardness of type 303 specimens could be enhanced by plasma nitriding because of the formation of the γN phase. A bacterial test also demonstrated that the nitrided layer exhibited excellent antibacterial properties.

Original languageEnglish
Pages (from-to)1142-1145
Number of pages4
JournalSurface and Coatings Technology
Volume206
Issue number6
DOIs
Publication statusPublished - Dec 15 2011

Keywords

  • γ phase
  • 303 austenitic stainless steel
  • Plasma nitriding

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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