Journal
SURFACE & COATINGS TECHNOLOGY
Volume 204, Issue 14, Pages 2193-2196Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2009.12.009
Keywords
Magnesium alloy; DLC; Interlayer; Sputtering; Corrosion
Funding
- China Postdoctoral Science Foundation [20080430694]
- Ningbo Municipal Nature Science Foundation [2007A610028]
- Shanghai Postdoctoral Scientific Program [08R214156]
Ask authors/readers for more resources
Diamond-like Carbon coating (DLC) was deposited on AZ31 magnesium alloy by ion beam deposition technique in this study. A columnar Cr layer with a (110) preferred texture and a columnar CrN layer with a (111) preferred texture were applied as interlayers in the DLC coating/AZ31 substrate systems. The addition of these interlayers improved the adhesion between coating and substrate effectively, but did not enhance the corrosion resistance of the DLC/AZ31 systems due to the formation of galvanic cell between substrate and interlayer in the region of through-thickness defects in 3.5 wt.% NaCl Solution. In addition, the effect of bias voltage on the corrosion resistance of CrN/Cr coatings on magnesium alloys was investigated. Although the application of bias voltage induced the coating denser, it was still difficult for CrN/Cr coating to reduce the corrosion current density of AZ31 due to the large difference between coating and substrate in galvanic series. (C) 2009 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available