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Effects of diamond-like carbon coatings with different thickness on mechanical properties and corrosion behavior of biomedical NiTi alloy

  • Ruiqiang Hang*
  • , Shengli Ma*
  • , K. Paul Chu
  • *Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Diamond-like carbon (DLC) coatings with the thickness between 253-1880 nm were prepared on NiTi alloy by arc enhanced magnetron sputtering (AEMS). Surface profilometry, scratch tests, tribometry, and electrochemical tests were conducted to determine the mechanical properties and the corrosion behavior of the DLC-coated NiTi alloy, and it is found that DLC coatings with thickness between 700 and 1000 nm have moderate residual stress, high critical load, long wear life and good corrosion resistance. So DLC coatings with thickness between 700 and 1000 nm are suitable for improving the mechanical properties and corrosion resistance of biomedical NiTi alloy. The associated mechanisms were also discussed in detail. Copyright © 2012, Northwest Institute for Nonferrous Metal Research. Published by Elsevier BV. All rights reserved.
Translated title of the contribution类金刚石涂层的厚度对生物医用NiTi合金力学性能和腐蚀行为的影响
Original languageEnglish
Pages (from-to)1505-1510
JournalRare Metal Materials and Engineering
Volume41
Issue number9
DOIs
Publication statusPublished - Sept 2012

Research Keywords

  • Corrosion behavior
  • Diamond-like carbon
  • Mechanical property
  • Nickel-titanium
  • 类金刚石
  • 镍钛合金
  • 力学性能
  • 腐蚀行为

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