共 32 条
Response of duplex Cr(N)/S and Cr(C)/S coatings on 316L stainless steel to tribocorrosion in 0.89% NaCl solution under plastic contact conditions
被引:6
作者:
Sun, Y.
[1
]
Dearnley, P. A.
[2
]
Mallia, Bertram
[3
]
机构:
[1] De Montfort Univ, Fac Technol, Sch Engn & Sustainable Dev, Leicester LE1 9BH, Leics, England
[2] Boride Serv Ltd, Leeds, W Yorkshire, England
[3] Univ Malta, Fac Engn, Msida Campus, Msd 2080, Malta
关键词:
stainless steel;
tribocorrosion;
coating;
friction;
wear;
COCRMO ALLOY;
CO-CR;
FRETTING CORROSION;
WEAR;
CHROMIUM;
BEHAVIOR;
APPRAISAL;
NITROGEN;
TI6AL4V;
D O I:
10.1002/jbm.b.33690
中图分类号:
R318 [生物医学工程];
学科分类号:
0831 ;
摘要:
Two duplex coatings, Cr(N)/S and Cr(C)/S, were deposited on 316 L stainless steel by magnetron sputtering. The effectiveness of these duplex coatings in improving the tribocorrosion behavior of medical alloys under elastic contact conditions has been demonstrated in a recent publication. The present work focused on the response of these duplex coatings to tribocorrosion under plastic contact conditions. Tribocorrosion tests were conducted in 0.89% NaCl solution at 37 degrees C at an initial contact pressure of 740 MPa and under unidirectional sliding conditions for sliding duration up to 24 h. The results showed that during sliding in the corrosive solution, the duplex coatings were plastically deformed into the substrate to a depth about 1 lm. The Cr(C)/S duplex coating had sufficient ductility to accommodate the deformation without cracking, such that it was worn through gradually, leading to the gradual increase in open circuit potential (OCP) and coefficient of friction (COF). On the other hand, the Cr(N)/S duplex coating suffered from cracking at all tested potentials, leading to coating blistering after prolonged sliding at OCP and stable pit formation in the substrate beneath the coating at applied anodic potentials. (C) 2016 Wiley Periodicals, Inc.
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页码:1503 / 1513
页数:11
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