Densification and superplasticity of hydroxyapatite ceramics

Keiichiro Tago, Kiyoshi Itatani, Tohru Suzuki, Yoshio Sakka, Seiichiro Koda

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Fabrication conditions for high-density and fine-grained hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 : HAp) ceramic were examined; the tensile elongation of HAp ceramic during heating was measured in order to evaluate its possible superplastic behavior. The HAp compact was fired in air at a temperature between 1100 and 1200°C for 5 h. The relative density of HAp compact fired at 1100°C for 5 h showed a maximum (99.2%), whereas the average grain size was as small as 0.56 μm. The tensile elongation of this HAp specimen was tested at a temperature between 940 and 1100°C. The tensile elongations tested at 1050 and 1100°C attained 156 and 157%, respectively; the specimen tested at 1050°C contained a limited number of cavities, whereas the specimen tested at 1100°C was observed to have a large number of cavities.

Original languageEnglish
Pages (from-to)669-673
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume113
Issue number1322
DOIs
Publication statusPublished - 2005 Jan 1
Externally publishedYes

Fingerprint

superplasticity
Superplasticity
Durapatite
densification
Densification
Hydroxyapatite
elongation
Elongation
ceramics
cavities
grain size
Heating
Fabrication
Temperature
fabrication
heating
temperature
air
Air

Keywords

  • Fine grains
  • High density
  • Hydroxyapatite
  • Superplasticity
  • Tensile elongation

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Densification and superplasticity of hydroxyapatite ceramics. / Tago, Keiichiro; Itatani, Kiyoshi; Suzuki, Tohru; Sakka, Yoshio; Koda, Seiichiro.

In: Journal of the Ceramic Society of Japan, Vol. 113, No. 1322, 01.01.2005, p. 669-673.

Research output: Contribution to journalArticle

Tago, Keiichiro ; Itatani, Kiyoshi ; Suzuki, Tohru ; Sakka, Yoshio ; Koda, Seiichiro. / Densification and superplasticity of hydroxyapatite ceramics. In: Journal of the Ceramic Society of Japan. 2005 ; Vol. 113, No. 1322. pp. 669-673.
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