Journal of Materials Science

, Volume 54, Issue 9, pp 7300–7306 | Cite as

Improved in vitro bioactivity and electrochemical behavior of hydroxyapatite-coated NiTi shape memory alloy

  • Tahir Sattar
  • Tareq ManzoorEmail author
  • Fazal Ahmad Khalid
  • Muhammad Akmal
  • Ghuzanfar Saeed


Nickel titanium (NiTi) shape memory alloys have a vigorous prospective for biomedical solicitations. In this work, electrochemical behavior of hydroxyapatite (HA) coated and thermally oxidized near equiatomic NiTi shape memory alloys was efficaciously investigated for biomedical applications. NiTi samples were spin-coated with laboratory-synthesized HA followed by drying and calcination at 120 ± 5 °C and 450 ± 5 °C, respectively. Similarly, uncoated NiTi samples were thermally oxidized by heating at 450 ± 5 °C in air. The comparison was made among HA-coated, thermally oxidized and uncoated samples. Scanning electron microscope (SEM), atomic force microscope and X-ray diffraction confirm the presence of Titania and HA coating on the NiTi substrates. Electrochemical testing results showed the better resistance against corrosion for the HA-coated samples because of the protective coatings of HA and Titania, as compared to the rest. Moreover, Fourier transform infrared spectroscopy and SEM reveal that the HA-coated sample will provide bioactive cushion to the host structure for better adhesion during the implanted period, while the implant will do its job.


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Battery Research Center, Korea Electrotechnology Research Institute (KERI)ChangwonRepublic of Korea
  2. 2.University of Science and TechnologyDaejeonRepublic of Korea
  3. 3.Faculty of Materials and Chemical Engineering (FMCE)Ghulam Ishaq Khan Institute of Engineering Sciences and TechnologyTopiPakistan
  4. 4.Energy Research CentreCOMSATS UniversityLahorePakistan
  5. 5.University of Engineering and TechnologyLahorePakistan
  6. 6.Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST)DaejeonRepublic of Korea
  7. 7.Advanced Materials Institute for BIN Convergence Technology (BK21 Plus Global Program), Department of BIN Convergence TechnologyChonbuk National UniversityJeonjuRepublic of Korea

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