Tribological properties of biocompatible Ti-10W and Ti-7.5TiC-7.5W

Myounggeun Choi, Eunji Hong, Jungwon So, Seokbeom Song, Byoung Suck Kim, Akiko Yamamoto, Yong Suk Kim, Jinhan Cho, Heeman Choe

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This study investigates and compares the microstructure, biocompatibility, and tribological properties of two different Ti-based composites, Ti. -10W and Ti. -7.5TiC. -7.5W, with those of pure Ti for their potential use in biomedical applications. In particular, cold and hot isostatic-pressing and arc-melting methods were utilized and compared for the microstructure of the composites. Nano-scratch measurements and pin-on-disk wear tests were employed to understand their tribological behavior. As compared to pure Ti, Ti. -10W and Ti. -7.5TiC. -7.5W showed significantly improved nano-scratch resistance (by 85 and 77%, respectively) and wear resistance (by 64 and 66%, respectively), in good agreement with hardness measurements. For biocompatibility examination, both microculture tetrazolium test (MTT) and water soluble tetrazolium (WST-1) test were used to quantify the cell viability of human osteoblasts and mouse fibroblasts on the materials. Both of the Ti-based composites showed acceptable biocompatibility in comparison with the pure Ti control.

Original languageEnglish
Pages (from-to)214-222
Number of pages9
JournalJournal of the Mechanical Behavior of Biomedical Materials
Volume30
DOIs
Publication statusPublished - 2014 Feb

Keywords

  • Biocompatibility
  • Cell proliferation
  • Titanium
  • Wear mechanism

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering
  • Mechanics of Materials

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