Laser surface modification of Nickel-titanium (NiTi) alloy biomaterials to improve biocompatibility and corrosion resistance

K. W. Ng, Hau Chung Man

Research output: Chapter in book / Conference proceedingChapter in an edited book (as author)Academic researchpeer-review

1 Citation (Scopus)


This chapter investigates the feasibility of applying a laser surface alloying technique to improve the corrosion resistance and biocompatibility of nickel-titanium (NiTi) in simulated body fluid. It summarizes the result of laser surface modification of NiTi with Mo using a CO2laser into three sections. The microstructure, chemical composition, surface morphology, hardness, corrosion resistance, nickel release rate, wettability, bone-like apatite formation and cell adhesion behavior of the surface alloyed layer were analyzed using scanning electron microscopy (SEM), energy dispersive analysis by X-rays (EDAX), X-ray diffractometry (XRD), Vicker's microhardness, polarization tests, atomic absorption spectrometry, sessile drop technique, immersion test and cell adhesion analysis.
Original languageEnglish
Title of host publicationLaser Surface Modification of Alloys for Corrosion and Erosion Resistance
PublisherElsevier Inc.
Number of pages28
ISBN (Print)9780857090157
Publication statusPublished - 1 Mar 2012


  • Biocompatibility
  • Cell adhesion analysis
  • Laser surface alloying
  • Molybdenum (Mo)
  • Nickel-titanium (NiTi)

ASJC Scopus subject areas

  • Engineering(all)

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