RT Journal Article
T1 Mechanical properties and structure of Ti-6A1-4V alloy implanted with different light ions
A1 Alonso, F.
A1 Arizaga, A.
A1 Quainton, S.
A1 Ugarte, J. J.
A1 Viviente, J. L.
A1 Oñate, J. I.
AB The effect of N+ and C- implantation on the properties of Ti-6Al-4V alloy is widely documented. However, some authors claim that other light ions, such as O+ or B+, also have an effect on this alloy, improving its mechanical properties. In this work, Ti-6Al-4V alloy samples have been implanted with C+, N+ and O+ light ions. Energies from 50 to 180 keV and doses of the order of 1017 ion cm-2 have been used, keeping the substrate temperature below 500°C. Mechanical properties such as the hardness or elastic recovery have been evaluated by means of microindentation tests, with a loading-unloading cycle at loads up to 10 mN. An increase in surface hardness of more than 100% has been observed in most of the implanted samples. Pin-on-disc wear tests under lubricated conditions have been performed to evaluate and compare the tribological behaviour of implanted samples against ultrahigh molecular weight polyethylene. A decrease in the friction coefficient from 0.1 to 0.05, resulting from ion implantation, has been observed. Unlubricated wear tests using an alumina ball on a Ti-6Al-4V disc have also been carried out. Wear tracks on the Ti-6Al-4V, evaluated by means of optical profilometry and scanning electron microscopy, have shown that implantation can improve the abrasive wear resistance by two orders of magnitude. X-ray photoelectron spectroscopy analyses also were carried out on selected samples, showing the presence of hard phases, such as oxides or carbides, in the implanted samples.
SN 0257-8972
YR 1995
FD 1995-10
LK https://hdl.handle.net/11556/4606
UL https://hdl.handle.net/11556/4606
LA eng
NO Alonso , F , Arizaga , A , Quainton , S , Ugarte , J J , Viviente , J L & Oñate , J I 1995 , ' Mechanical properties and structure of Ti-6A1-4V alloy implanted with different light ions ' , Surface and Coatings Technology , vol. 74-75 , no. PART 2 , pp. 986-992 . https://doi.org/10.1016/0257-8972(95)08291-3
NO The authors are grateful to Dr. A. Gonzalez-Elipe and his group in the Materials Science Institute in Seville for their assistance with the XPS analyses. This work has been financed by Iberdrola S.A. under the programme PLASMATEK and CICYT (ref. MAT93-0703-C03-03).
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RD 30 jul 2024