Jump to main content
Jump to site search

Issue 82, 2016, Issue in Progress
Previous Article Next Article

Optimizing PVD conditions for electrochemical anodization growth of well-adherent Ta2O5 nanotubes on Ti–6Al–4V alloy

Author affiliations

Abstract

Well-adherent tantalum pentoxide nanotubes (Ta2O5 NTs) were successfully grown on Ti–6Al–4V alloy (Ti64) through optimization of physical vapor deposition magnetron sputtering (PVDMS) followed by a two-step anodization and subsequent thermal treatment from 450 to 1000 °C for 1 h with a heating/cooling rate of 1 °C min−1, under atmospheric conditions. The effective sputter yield during the magnetron sputtering process was achieved with a DC power of 350 W, temperature of 250 °C and a deposition time of 6 h. The results showed that the anodization time played a key role in the growth of the Ta2O5 NTs and microstructural evolution. The nanotubes pore size and tube length varied from 18 to 30 nm and 73 nm to ∼4 μm as anodizing time rose from 30 s to 20 min, respectively. For the 450 °C annealed sample with the strongest adhesion, the scratch length, failure point and adhesion strength were 1024 μm, 863 μm and 2301 mN, respectively. The 450 °C annealed coating showed the highest wettability (lowest contact angle value) among the specimens. This multi-step approach could be considered for the design of various nanostructured titanium implant surfaces.

Graphical abstract: Optimizing PVD conditions for electrochemical anodization growth of well-adherent Ta2O5 nanotubes on Ti–6Al–4V alloy

Back to tab navigation

Supplementary files

Publication details

The article was received on 01 May 2016, accepted on 12 Aug 2016 and first published on 12 Aug 2016


Article type: Paper
DOI: 10.1039/C6RA11290K
Author version available: Download Author version (PDF)
Citation: RSC Adv., 2016,6, 78999-79015
  •   Request permissions

    Optimizing PVD conditions for electrochemical anodization growth of well-adherent Ta2O5 nanotubes on Ti–6Al–4V alloy

    M. Sarraf, B. Abdul Razak, A. Dabbagh, B. Nasiri-Tabrizi, N. H. Abu Kasim and W. J. Basirun, RSC Adv., 2016, 6, 78999
    DOI: 10.1039/C6RA11290K

Search articles by author

Spotlight

Advertisements