In situ formation of hydroxyapatite-whisker ceramics by hydrothermal hot-pressing method

Jun Guo Li, Toshiyuki Hashida

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Hydroxyapatite (HAp) ceramics have been prepared from α-triealeium phosphate (α-TCP) with addition of water or ammonia water by hydrothermal hot-pressing (HHP) method under a condition of 300°C/40 MPa/2 h. When the additive is water, it appears that the HAp grains produced show whisker-like and plate-like features. The bending strength of the HAp ceramic obtained is measured to be 24.5 MPa. When the additive is ammonia water, the obtained HAp ceramic consists of HAp-whiskers only. The bending strength and fracture toughness reach 56 MPa and 1.52 MPa·m1/2, respectively. Treating α-TCP with addition of ammonia water by the HHP method is thus a useful method for in situ fabrication of HAp-whisker ceramics.

Original languageEnglish
Pages (from-to)3544-3546
Number of pages3
JournalJournal of the American Ceramic Society
Volume89
Issue number11
DOIs
Publication statusPublished - 2006 Nov 1

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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