Surface-hardened nanostructured Ti- and Zr-matrix composites for medical and engineering applications

Yu P. Sharkeev, V. A. Kukareko, E. V. Legostaeva, A. V. Byeli

Research output: Contribution to journalArticle

Abstract

Combined studies have been conducted on the structural-phase state and physical-mechanical and tribological properties of nanostructured titanium and zirconium subjected to ion-beam implantation or microplasma oxidation. Low-temperature ion-beam nitriding of the materials examined is shown to provide a 25-35-fold increase in the wear resistance of their surface layers and a 40% decrease in the friction coefficient for tribological interaction with contact surfaces. Microplasma oxidation of titanium in aqueous solution of phosphoric acid, hydroxylapatite and calcium carbonate powders enables calcium-phosphate coatings with high physical-mechanical properties to be produced. Tribological tests in a dry friction regime and in isotonic solution of sodium chloride have revealed that a nanostructured titanium substrate-calcium phosphate coating biocomposite exhibits a fairly high friction coefficient (0. 4-1. 0) in tribological interactions with ultrahigh molecular-weight polyethylene or bone tissue. A substantial improvement in the tribotechnical properties of nanostructured titanium and zirconium with modified surface layers makes them very promising materials for medical and engineering applications.

Original languageEnglish
Pages (from-to)1053-1059
Number of pages7
JournalRussian Physics Journal
Volume53
Issue number10
DOIs
Publication statusPublished - 1 Mar 2011

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Keywords

  • Abc-pressing
  • Equal-channel angular pressing
  • Friction and wear
  • Ion-beam alloying
  • Microplasma oxidation
  • Nanostructure

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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