Utility of tantalum (Ta) coating to improve surface hardness in vitro bioactivity and biocompatibility of Co-Cr

Vuong Hung Pham, Seung Hee Lee, Yuanlong Li, Hyoun Ee Kim, Kwan Ha Shin, Young-Hag Koh

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

This study reports the utility of tantalum (Ta) coating for improving the surface hardness, in vitro bioactivity and biocompatibility of Co-Cr implants. The use of direct current sputtering allowed for the deposition of a dense and uniform Ta film onto a Co-Cr substrate, which was composed of β-phase Ta grains. This hard Ta coating significantly improved the surface hardness of the Co-Cr by a factor of > 2.3. In addition, the Ta-deposited Co-Cr substrate showed a vigorous precipitation of apatite crystals on its surface after 4 weeks of immersion in simulated body fluid, suggesting its excellent in vitro bioactivity. This bioactive Ta coating led to a considerable improvement in the in vitro biocompatibility of the Co-Cr, which was assessed in terms of the attachment, proliferation and differentiation of pre-osteoblasts (MC3T3-E1).

Original languageEnglish
Pages (from-to)269-274
Number of pages6
JournalThin Solid Films
Volume536
DOIs
Publication statusPublished - 2013 Jun 1

Fingerprint

Tantalum
biocompatibility
tantalum
Bioactivity
Biocompatibility
hardness
Hardness
coatings
Coatings
Apatites
osteoblasts
body fluids
Body fluids
Osteoblasts
Apatite
Substrates
apatites
activity (biology)
submerging
attachment

Keywords

  • Biomaterials
  • Co-Cr substrates
  • Cytoskeleton
  • Differentiation
  • Sputtering
  • Tantalum

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Utility of tantalum (Ta) coating to improve surface hardness in vitro bioactivity and biocompatibility of Co-Cr. / Pham, Vuong Hung; Lee, Seung Hee; Li, Yuanlong; Kim, Hyoun Ee; Shin, Kwan Ha; Koh, Young-Hag.

In: Thin Solid Films, Vol. 536, 01.06.2013, p. 269-274.

Research output: Contribution to journalArticle

Pham, Vuong Hung ; Lee, Seung Hee ; Li, Yuanlong ; Kim, Hyoun Ee ; Shin, Kwan Ha ; Koh, Young-Hag. / Utility of tantalum (Ta) coating to improve surface hardness in vitro bioactivity and biocompatibility of Co-Cr. In: Thin Solid Films. 2013 ; Vol. 536. pp. 269-274.
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