Effects of H2O2 pretreatment on surface characteristics and bioactivity of NaOH-treated NiTi shape memory alloy

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
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Author(s)

  • Cheng-Lin Chu
  • Tao Hu
  • Jun Zhou
  • Yue-Pu Pu
  • Li-Hong Yin
  • Yin-Sheng Dong
  • Ping-Hua Lin

Detail(s)

Original languageEnglish
Pages (from-to)1295-1300
Journal / PublicationTransactions of Nonferrous Metals Society of China (English Edition)
Volume16
Issue number6
Publication statusPublished - Dec 2006

Abstract

The effects of H2O2 pretreatment on the surface characteristics and bioactivity of NaOH-treated NiTi shape memory alloy (SMA) were investigated by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectra, Fourier transform infrared spectroscopy as well as a simulated body fluid (SBF) soaking test. It is found that the H2O2 pretreatment can lead to the direct creation of more Ti-OH groups and the decrease in the amount of Ni2O3, Na2TiO3 and remnant NiTi phases on the surfaces of bioactive NiTi SMA prepared by NaOH treatment. As a result, the induction period of apatite formation is shortened by dispensing with the slow kinetic formation process of Ti-OH groups via an exchange of Na+ ions from Na2TiO3 phase with H3O+ ions in SBF, which indicates that the bioactivity of NaOH-treated NiTi SMA can be further improved by the H2O2 pretreatment.

Research Area(s)

  • Bioactivity, H2O2 pretreatment, NaOH treatment, NiTi, Shape memory alloy (SMA), Surface structure

Citation Format(s)

Effects of H2O2 pretreatment on surface characteristics and bioactivity of NaOH-treated NiTi shape memory alloy. / Chu, Cheng-Lin; Hu, Tao; Zhou, Jun; Pu, Yue-Pu; Yin, Li-Hong; Dong, Yin-Sheng; Lin, Ping-Hua; Chung, Jonathan-Cy; Chu, Paul-K.

In: Transactions of Nonferrous Metals Society of China (English Edition), Vol. 16, No. 6, 12.2006, p. 1295-1300.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review