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 language | English |
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Pages (from-to) | 1053-1059 |
Number of pages | 7 |
Journal | Russian Physics Journal |
Volume | 53 |
Issue number | 10 |
DOIs | |
Publication status | Published - 1 Mar 2011 |
Keywords
- Abc-pressing
- Equal-channel angular pressing
- Friction and wear
- Ion-beam alloying
- Microplasma oxidation
- Nanostructure
ASJC Scopus subject areas
- Physics and Astronomy(all)