TY - JOUR
T1 - Tribological properties of duplex plasma oxidised, nitrided and PVD coated Ti-6Al-4V
AU - Cassar, G.
AU - Banfield, S.
AU - Wilson, J. C.Avelar Batista
AU - Housden, J.
AU - Matthews, A.
AU - Leyland, A.
PY - 2011/10/25
Y1 - 2011/10/25
N2 - Sequential triode plasma oxidation and nitriding have been used to provide enhanced load support for physical vapour deposited (PVD) hard coatings. The diffusion process has been designed to maximise process efficiency and coating adhesion, thereby significantly improving the tribological properties of the Ti-6Al-4V alloy - particularly at high contact pressures. This has been demonstrated using unlubricated linear reciprocating-sliding ball-on-plate wear tests and micro-scratch adhesion testing. Also, surface micro-profilometry, nano/micro-indentation hardness testing, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and glow-discharge optical emission spectroscopy (GDOES) data are presented to corroborate the effect of the several plasma diffusion processes and duplex diffusion/coating combinations discussed here. The results presented show that the novel processing technique developed permits the use of oxygen diffusion in order to obtain relatively large case depths in shorter treatment times without compromising the adhesion strength of subsequently deposited PVD layers.
AB - Sequential triode plasma oxidation and nitriding have been used to provide enhanced load support for physical vapour deposited (PVD) hard coatings. The diffusion process has been designed to maximise process efficiency and coating adhesion, thereby significantly improving the tribological properties of the Ti-6Al-4V alloy - particularly at high contact pressures. This has been demonstrated using unlubricated linear reciprocating-sliding ball-on-plate wear tests and micro-scratch adhesion testing. Also, surface micro-profilometry, nano/micro-indentation hardness testing, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and glow-discharge optical emission spectroscopy (GDOES) data are presented to corroborate the effect of the several plasma diffusion processes and duplex diffusion/coating combinations discussed here. The results presented show that the novel processing technique developed permits the use of oxygen diffusion in order to obtain relatively large case depths in shorter treatment times without compromising the adhesion strength of subsequently deposited PVD layers.
KW - PVD
KW - Scratch-adhesion
KW - Ti-6Al-4V
KW - Triode plasma diffusion
KW - Wear
UR - http://www.scopus.com/inward/record.url?scp=80052367900&partnerID=8YFLogxK
U2 - 10.1016/j.surfcoat.2011.07.037
DO - 10.1016/j.surfcoat.2011.07.037
M3 - Article
AN - SCOPUS:80052367900
SN - 0257-8972
VL - 206
SP - 395
EP - 404
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
IS - 2-3
ER -