THE EFFECT OF SURFACE LAYER ON NITROGEN DEPTH DISTRIBUTION IN IMPLANTED TITANIUM

1 HORAZDOVSKY Tomas
Co-authors:
2 KOVAC Janez
Institutions:
1 Faculty of Mechanical Engineering, Czech Technical University in Prague, Czech Republic, EU.
2 Department of Surface Engineering and Optoelectronics, Jozef Stefan Institute, Ljubljana 1001, Slovenia, EU.
Conference:
9th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 18th - 20th 2017
Proceedings:
Proceedings 9th International Conference on Nanomaterials - Research & Application
Pages:
867-870
ISBN:
978-80-87294-81-9
ISSN:
2694-930X
Published:
8th March 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
15 views / 6 downloads
Abstract

Nitrogen implantation into titanium and its alloys significantly improves their surface hardness, sliding behaviour, wear and corrosion resistance. A thin surface nanolayer originating, e.g., from air exposure or from condensation of oil vapours modifies the ion energy distribution and causes a difference in the ion range. The effect of the thickness of the contaminant carbon layer on the nitrogen distribution was investigated. Titanium samples with a carbon nanolayer were implanted with nitrogen ions. An almost Gaussian experimental concentration profile was observed. The maximum of nitrogen concentration moves into the specimen with increasing thickness of the nanolayer. The experimental findings are in agreement with the theoretical calculations. These results can be useful for optimizing surface modifications of titanium materials by ion implantation.

Keywords: ion implantation, concentration profile, surface nanolayer
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