Surface characterization of alkali- and heat-treated Ti with or without prior acid etching

Sang Hyun An, Takuya Matsumoto, Hiroyuki Miyajima, Jun Ichi Sasaki, Ramaswamy Narayanan, Kyo Han Kim

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Titanium and its alloys are used as implant materials in dental and orthopaedic applications. The material affinities to host bone tissue greatly concern with the recovery period and good prognosis. To obtain a material surface having excellent affinity to bone, acid etching prior to alkali- and heat-treatment of Ti was conducted. The surface characteristics of the prepared sample indicated that the roughness as well as the wettability increased by pre-etching. Bone-like apatite was formed on pre-etched, alkali- and heat-treated Ti surface in simulated body fluid (SBF) within 3 days, while it takes 5 days on the solely alkali- and heat-treated surface. Osteoblastic cells showed better compatibility on the per-etched surface compared to the pure Ti surface or alkali- and heat-treated surface. Moreover, the pre-etched surface showed better pull-off tensile adhesion strength against the deposited apatite. Thus, acid etching prior to alkali- and heat-treatment would be a promising method for enhancing the affinity of Ti to host bone tissue.

Original languageEnglish
Pages (from-to)4377-4382
Number of pages6
JournalApplied Surface Science
Issue number10
Publication statusPublished - Mar 1 2012
Externally publishedYes


  • Acid etching
  • Adhesion strength
  • Alkali treatment
  • Simulated body fluid (SBF)
  • Titanium

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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