The chemical composition, structural-phase state, mechanical, and tribological properties of titanium-surface layers modified during the high-intensity aluminium-ion implantation assisted by the ion-plasma vacuum-arc source 'Raduga-5' are investigated. The mode of such high-intensity ion implantation allows obtaining ion-doped surface layers of a titan containing the fine-dispersed intermetallide phases TiAl, Ti3Al, and solid solution of aluminium in a titanium with variable composition in depth. With increasing doze of an implantation from 2.2·1017 ion/cm2 up to 2.2·1018 ion/cm2, the growth of thickness ion-alloyed layer of a titanium (from 0.4 up to 2.6 microns), medium-sized grains of intermetallide phases (from 20 up to 70 nanometres), and their conglomerates (from 71 up to 584 nanometres) are observed. As shown, the implantation of aluminium ions into the titanium results in substantial increase of microhardness and wear-resistance of materials. The maximum microhardness is observed for the titanium specimen implanted by aluminium ions at a doze of irradiation of 2.2·1018 ion/cm2. The conclusion about influence of a structural-phase state of ion-alloyed layers of titanium on their mechanical and tribological properties is made.
|Journal||Metallofizika i Noveishie Tekhnologii|
|Publication status||Published - Dec 2004|
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Metals and Alloys
- Condensed Matter Physics