Hydroxyapatite-zirconia composite thin films showing improved mechanical properties and bioactivity

Min Seok Kim, Jae Jun Ryu, Yun Mo Sung

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Nano-crystalline hydroxyapatite (HAp) films were formed at the Ti surface by a single-step microarc oxidation (MAO), and HAp-zirconia composite (HZC) films were obtained by subsequent chemical vapor deposition (CVD) of zirconia onto the HAp. Through the CVD process, zero- and one-dimensional zirconia nanostructures having tetragonal crystallinity (t-ZrO2) were uniformly distributed and well incorporated into the HAp crystal matrix to form nanoscale composites. In particular, (t-ZrO2) was synthesized at a very low temperature. The HZC films did not show secondary phases such as tricalcium phosphate (TCP) and tetracalcium phosphate (TTCP) at relatively high temperatures. The most likely mechanism for the formation of the t-ZrO2 and the pure HAp at the low processing temperature was proposed to be the diffusion of Ca2+ ions. The HZC films showed increasing micro-Vickers hardness values with increases in the t-ZrO2 content. The morphological features and phase compositions of the HZC films showed strong dependence on the time and temperature of the CVD process. Furthermore, they showed enhanced cell proliferation compared to the TiO2 and HAp films most likely due to the surface structure change.

Original languageEnglish
Pages (from-to)85-89
Number of pages5
JournalKorean Journal of Materials Research
Volume19
Issue number2
DOIs
Publication statusPublished - 2009 Aug 19

Fingerprint

Composite films
Durapatite
Bioactivity
Hydroxyapatite
Zirconia
Thin films
Mechanical properties
Chemical vapor deposition
Phosphates
Temperature
Vickers hardness
Cell proliferation
Phase composition
Surface structure
zirconium oxide
Nanostructures
Ions
Crystalline materials
Oxidation
Crystals

Keywords

  • Biomaterials
  • Hydroxyapatite
  • MTT assay
  • Zirconium dioxide

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Hydroxyapatite-zirconia composite thin films showing improved mechanical properties and bioactivity. / Kim, Min Seok; Ryu, Jae Jun; Sung, Yun Mo.

In: Korean Journal of Materials Research, Vol. 19, No. 2, 19.08.2009, p. 85-89.

Research output: Contribution to journalArticle

@article{7a6a6c4c1b19436cb5067235f5d2ca77,
title = "Hydroxyapatite-zirconia composite thin films showing improved mechanical properties and bioactivity",
abstract = "Nano-crystalline hydroxyapatite (HAp) films were formed at the Ti surface by a single-step microarc oxidation (MAO), and HAp-zirconia composite (HZC) films were obtained by subsequent chemical vapor deposition (CVD) of zirconia onto the HAp. Through the CVD process, zero- and one-dimensional zirconia nanostructures having tetragonal crystallinity (t-ZrO2) were uniformly distributed and well incorporated into the HAp crystal matrix to form nanoscale composites. In particular, (t-ZrO2) was synthesized at a very low temperature. The HZC films did not show secondary phases such as tricalcium phosphate (TCP) and tetracalcium phosphate (TTCP) at relatively high temperatures. The most likely mechanism for the formation of the t-ZrO2 and the pure HAp at the low processing temperature was proposed to be the diffusion of Ca2+ ions. The HZC films showed increasing micro-Vickers hardness values with increases in the t-ZrO2 content. The morphological features and phase compositions of the HZC films showed strong dependence on the time and temperature of the CVD process. Furthermore, they showed enhanced cell proliferation compared to the TiO2 and HAp films most likely due to the surface structure change.",
keywords = "Biomaterials, Hydroxyapatite, MTT assay, Zirconium dioxide",
author = "Kim, {Min Seok} and Ryu, {Jae Jun} and Sung, {Yun Mo}",
year = "2009",
month = "8",
day = "19",
doi = "10.3740/MRSK.2009.19.2.085",
language = "English",
volume = "19",
pages = "85--89",
journal = "Korean Journal of Materials Research",
issn = "1225-0562",
publisher = "The Korea Federation of Science and Technology",
number = "2",

}

TY - JOUR

T1 - Hydroxyapatite-zirconia composite thin films showing improved mechanical properties and bioactivity

AU - Kim, Min Seok

AU - Ryu, Jae Jun

AU - Sung, Yun Mo

PY - 2009/8/19

Y1 - 2009/8/19

N2 - Nano-crystalline hydroxyapatite (HAp) films were formed at the Ti surface by a single-step microarc oxidation (MAO), and HAp-zirconia composite (HZC) films were obtained by subsequent chemical vapor deposition (CVD) of zirconia onto the HAp. Through the CVD process, zero- and one-dimensional zirconia nanostructures having tetragonal crystallinity (t-ZrO2) were uniformly distributed and well incorporated into the HAp crystal matrix to form nanoscale composites. In particular, (t-ZrO2) was synthesized at a very low temperature. The HZC films did not show secondary phases such as tricalcium phosphate (TCP) and tetracalcium phosphate (TTCP) at relatively high temperatures. The most likely mechanism for the formation of the t-ZrO2 and the pure HAp at the low processing temperature was proposed to be the diffusion of Ca2+ ions. The HZC films showed increasing micro-Vickers hardness values with increases in the t-ZrO2 content. The morphological features and phase compositions of the HZC films showed strong dependence on the time and temperature of the CVD process. Furthermore, they showed enhanced cell proliferation compared to the TiO2 and HAp films most likely due to the surface structure change.

AB - Nano-crystalline hydroxyapatite (HAp) films were formed at the Ti surface by a single-step microarc oxidation (MAO), and HAp-zirconia composite (HZC) films were obtained by subsequent chemical vapor deposition (CVD) of zirconia onto the HAp. Through the CVD process, zero- and one-dimensional zirconia nanostructures having tetragonal crystallinity (t-ZrO2) were uniformly distributed and well incorporated into the HAp crystal matrix to form nanoscale composites. In particular, (t-ZrO2) was synthesized at a very low temperature. The HZC films did not show secondary phases such as tricalcium phosphate (TCP) and tetracalcium phosphate (TTCP) at relatively high temperatures. The most likely mechanism for the formation of the t-ZrO2 and the pure HAp at the low processing temperature was proposed to be the diffusion of Ca2+ ions. The HZC films showed increasing micro-Vickers hardness values with increases in the t-ZrO2 content. The morphological features and phase compositions of the HZC films showed strong dependence on the time and temperature of the CVD process. Furthermore, they showed enhanced cell proliferation compared to the TiO2 and HAp films most likely due to the surface structure change.

KW - Biomaterials

KW - Hydroxyapatite

KW - MTT assay

KW - Zirconium dioxide

UR - http://www.scopus.com/inward/record.url?scp=68649120935&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=68649120935&partnerID=8YFLogxK

U2 - 10.3740/MRSK.2009.19.2.085

DO - 10.3740/MRSK.2009.19.2.085

M3 - Article

AN - SCOPUS:68649120935

VL - 19

SP - 85

EP - 89

JO - Korean Journal of Materials Research

JF - Korean Journal of Materials Research

SN - 1225-0562

IS - 2

ER -