Hydrothermal surface modification of a low modulus Ti-Nb based alloy

Tao Fu*, Baoguo Liu, Binghui Dong, Wei Su, Jitang Fan, Yuan Ge

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A low modulus near (type titanium alloy (Ti-25Nb-3Zr-2Sn-3Mo, or TLM alloy) was subjected to hydrothermal treatments with a urea solution at different temperatures followed by heat treatment. The surface structure, the chemical composition, adhesion and hydrophilicity of the treated TLM alloy were investigated by SEM, XRD, XPS, Rockwell-C indentation test and contact angle measurement. The results show that nanosheet films of ammonium titanate can be formed at 105 and 120°C , while the nanoparticle film of anatase TiO2 containing Nb2O5 is formed at 150°C on the alloy surface. The subsequent annealing heat treatment at 400°C can decompose the ammonium salts and crystallize titania. The obtained oxide films have a good adhesion. The duplex treatment has enhanced the hydrophilicity of the TLM alloy, and it would be good for its biocompatibility.

Original languageEnglish
Pages (from-to)291-295
Number of pages5
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume43
Issue number2
Publication statusPublished - Feb 2014
Externally publishedYes

Keywords

  • Biomaterials
  • Hydrophilicity
  • Hydrothermal
  • Titanium alloy

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