TY - JOUR
T1 - Wear resistant and anti-corrosive treatment for TI-6AL-4V using metal vapor vacuum arc source in comparison with plasma immersion ion implantation
AU - Chang, Chia Wei
AU - Liao, Jiunn Der
AU - Chen, Huan Jen
AU - Chang, Charlie S.F.
AU - Chiu, Song Mao
N1 - Funding Information:
This work was supported by National Science Council of Taiwan under contract number NSC 93-2622-E-006-038-CC3 and projects, No. 92C17, 93C14 and 94-Explore, granted by Metal Industry R&D Centre . The authors would also like to appreciate the assistance from Metal Industries Research and Development Centre and Duratek Inc. for providing the PIII and the MeVVA equipment, respectively.
PY - 2006/9/25
Y1 - 2006/9/25
N2 - This study utilizes two ion-implantation methods, plasma immersion ion implantation (PIII) and metal vapor vacuum arc (MeVVA), to prepare Ti-N phases on the surface of Ti-6Al-4V. By the nitrogen PIII method, both nitrogen and minor oxygen species are simultaneously attracted by the negatively charged substrate. The penetration of N and O interstitial elements to an extensible depth is possible owing to the effect from the negatively charged target. The nitrogen PIII treatment does not produce a novel Ti-N phase. As a result, the modified surface does not behave anticorrosive. The Hn and the E determined by nanoindentation also remain unchanged. It is still potential to apply this non-directional treatment by increasing bias voltage of the target, coating pure titanium on Ti-6Al-4V, and adjusting the regeneration process of nitrogen ions. The MeVVA treatment creates a novel αTiN0.3 (011) phase on Ti-6Al-4V in present study. It signifies that the interactions between kinetic Ti ions of varied energies and minor nitrogen molecules, with minor participation of oxygen, are highly feasible. The novel ion-implanted Ti-N phase is corrosion resistant, which is capable to reduce passivation current density by forming a passive film. Moreover, the MeVVA-treated surface is surface-hardened; the E is simultaneously increased. The increase of nano mechanical properties can be visualized by 3D images using Nano Vision and determined by analyzing the tip/surface impact structure on the indentation site.
AB - This study utilizes two ion-implantation methods, plasma immersion ion implantation (PIII) and metal vapor vacuum arc (MeVVA), to prepare Ti-N phases on the surface of Ti-6Al-4V. By the nitrogen PIII method, both nitrogen and minor oxygen species are simultaneously attracted by the negatively charged substrate. The penetration of N and O interstitial elements to an extensible depth is possible owing to the effect from the negatively charged target. The nitrogen PIII treatment does not produce a novel Ti-N phase. As a result, the modified surface does not behave anticorrosive. The Hn and the E determined by nanoindentation also remain unchanged. It is still potential to apply this non-directional treatment by increasing bias voltage of the target, coating pure titanium on Ti-6Al-4V, and adjusting the regeneration process of nitrogen ions. The MeVVA treatment creates a novel αTiN0.3 (011) phase on Ti-6Al-4V in present study. It signifies that the interactions between kinetic Ti ions of varied energies and minor nitrogen molecules, with minor participation of oxygen, are highly feasible. The novel ion-implanted Ti-N phase is corrosion resistant, which is capable to reduce passivation current density by forming a passive film. Moreover, the MeVVA-treated surface is surface-hardened; the E is simultaneously increased. The increase of nano mechanical properties can be visualized by 3D images using Nano Vision and determined by analyzing the tip/surface impact structure on the indentation site.
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U2 - 10.1016/j.tsf.2005.12.047
DO - 10.1016/j.tsf.2005.12.047
M3 - Article
AN - SCOPUS:33750258790
VL - 515
SP - 122
EP - 128
JO - Thin Solid Films
JF - Thin Solid Films
SN - 0040-6090
IS - 1
ER -