Bioactive modification of NiTi shape memory alloy

Chuanjun Huang, Yibing Xie, Li Min Zhou, Haitao Huang, Jian Lu, Yihe Zhang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

NiTi wire was anodized in phosphoric acid, diluted hydrogen fluoride, and fluoric ions containing non-aqueous electrolytes. Surface morphologies and compositions of modified NiTi wires were characterized by using field-emission scanning electron microscopic (FESEM) equipped with an energy dispersive spectroscopy (EDS). The formation of oxides with reduced nickel element was observed on NiTi wires anodized in aqueous solution. Nano-roughness with lower surface hardness, compared to smooth surface formed in phosphoric acid, was obtained by anodization in hydrogen fluoride. After treatment in aqueous solution, corrosion resistance was improved as indicated by linear sweep voltammetry test in 0.9 % NaCl solution at room temperature. Uniform hydroxyapatite film on NiTi and anodized NiTi was obtained by electrodeposition method.
Original languageEnglish
Title of host publicationInternational Conference on Smart Materials and Nanotechnology in Engineering
Volume6423
DOIs
Publication statusPublished - 1 Dec 2007
EventInternational Conference on Smart Materials and Nanotechnology in Engineering - Harbin, China
Duration: 1 Jul 20074 Jul 2007

Conference

ConferenceInternational Conference on Smart Materials and Nanotechnology in Engineering
CountryChina
CityHarbin
Period1/07/074/07/07

Keywords

  • Anodization
  • Corrosion resistance
  • Hydrogen fluoride
  • Hydroxyapatite
  • Nano-roughness

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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