New technique for bonding hydroxyapatite ceramics and titanium by the hydrothermal hot-pressing method

Takamasa Onoki, Kazuyuki Hosoi, Toshiyuki Hashida

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

Solidification of hydroxyapatite (HA:Ca10(PO4) 6(OH)2) and its bonding with titanium (Ti) was achieved simultaneously by using the hydrothermal hot-pressing method at temperatures as low as 150°C with no special surface treatment of Ti. A mixture of calcium hydrogen phosphate dihydrate and calcium hydroxide was used as the starting powder material for solidifying HA. Three-point bending tests were conducted to obtain an estimate of the fracture toughness for the HA/Ti interface as well as for the HA ceramics only. The fracture toughness tests showed that the induced crack from the pre-crack tip deviated from the HA/Ti interface and propagated into the HA. The fracture toughness determined on the bonded HA/Ti specimen was close to that of the HA ceramics only (∼0.30 MPa m1/2).

Original languageEnglish
Pages (from-to)767-770
Number of pages4
JournalScripta Materialia
Volume52
Issue number8
DOIs
Publication statusPublished - 2005 Apr 1

Keywords

  • Bonding
  • Hydrothermal
  • Hydroxyapatite
  • Titanium
  • Toughness

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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