Electrochemical deposition of hydroxyapatite on titanium substrates in metastable calcium phosphate solution under pulse current

M. Kawashita, T. Hayakawa, G. H. Takaoka

研究成果: Conference contribution

抄録

Titanium (Ti) metal substrates were etched in sulfuric acid (H 2S04) with concentrations of 25, 50, 75 and 97% at 60°C for 30 min. Apatite films were deposited onto unetched and etched substrates by an electrodeposition method under a pulse current. The electrolyte was metastable calcium phosphate solution that had 1.5 times the ion concentrations of human body fluid. but did not contain magnesium ion at 36.5C. Deposition times were 90 min. We used the average current density of 0.01 A/cm2 and ON time equal to OFF time of 15 s. In the electrodeposition. hydrogen was incorporated into the surface of the Ti substrates to form titanium hydride (TiH2) on the substrate surfaces. After the electrodeposition, all specimens were heated at 600°C for 60 min. The adhesion between apatite and substrates were greatly improved by the heat treatment for the substrates etched in 50 and 75% H2SO4. It is considered that in these specimens the anchoring effect due to the microstructural roughness formed by etching was enhanced by the shrinking of apatite crystals during the heat treatment.

本文言語English
ホスト出版物のタイトルAdvances in Bioceramics and Porous Ceramics - A Collection of Papers Presented at the 32nd International Conference on Advanced Ceramics and Composites, ICACC 2008
ページ113-122
ページ数10
7
出版ステータスPublished - 2009 12 1
イベントAdvances in Bioceramics and Porous Ceramics - 32nd International Conference on Advanced Ceramics and Composites, ICACC 2008 - Daytona Beach, FL, United States
継続期間: 2008 1 272008 2 1

出版物シリーズ

名前Ceramic Engineering and Science Proceedings
番号7
29
ISSN(印刷版)0196-6219

Other

OtherAdvances in Bioceramics and Porous Ceramics - 32nd International Conference on Advanced Ceramics and Composites, ICACC 2008
国/地域United States
CityDaytona Beach, FL
Period08/1/2708/2/1

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 材料化学

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