In vitro electrochemical corrosion behavior of functionally graded diamond-like carbon coatings on biomedical Nitinol alloy

2006 ◽  
Vol 496 (2) ◽  
pp. 457-462 ◽  
Author(s):  
Chenglong Liu ◽  
Deping Hu ◽  
Jun Xu ◽  
Dazhi Yang ◽  
Min Qi
Keyword(s):  
Corrosion Behavior ◽  
Electrochemical Corrosion ◽  
Functionally Graded ◽  
Diamond Like Carbon ◽  
Carbon Coatings ◽  
Electrochemical Corrosion Behavior ◽  
Nitinol Alloy

Effects of Rare Earth on Electrochemical Corrosion Behavior of Graphite-Like Carbon Coatings

2011 ◽  
Vol 199-200 ◽  
pp. 1978-1983
Author(s):  
Zuo Ping Wang ◽  
Peng Bo Chen ◽  
Zhong Wei Ma ◽  
Jiang Tao Yu Wen
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Surface Layer ◽  
Corrosion Behavior ◽  
Current Density ◽  
Sea Water ◽  
Electrochemical Corrosion ◽  
Form Complex ◽  
Carbon Coatings ◽  
Electrochemical Corrosion Behavior

The corrosion behavior of graphite-like carbon (GLC) coating in sea water was studied and yttrium and cerium were doped into it by using mosaic in the target of magnetron sputtering process to improve its corrosion resistance. The result shows that the GLC coating characterizes typical underfilm electrochemical corrosion in sea water. Yttrium added in chromium interlayer or yttrium and cerium added in the surface layer of the GLC coating can apparently improve the microstructure result in significantly decrease the corrosive current density. As the modifications of Y in interlayer and Y, Ce and Ta in top layer are composed together to form complex GLC coating, the wear resistance and the antifriction is dramatically improved, the corrosive current density is only one-twenty fourth of that of the commercial C/Cr GLC coating.

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