Low temperature synthesis of hydroxyapatite ceramics from octacalcium phosphate by hydrothermal hot pressing

Junguo Li, Takamasa Onoki, Lihui Liu, Atsushi Nakahira, Toshiyuki Hashida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study is to utilize a hydrothermal hot-pressing technique and prepare hydroxyapatite ceramics. The starting powder OCP (Ca8H 2(PO4)6-5H2O) and ammonia water were heated to 300° at a rate of 10°/min, and sintered under 40MPa for 2h. The effects of the amount and concentration of ammonia water were investigated. The results show that OCP reacted with NH4OH and produced HAp; the high concentration of ammonia water is advantageous for the solidification of the ceramics. The density, fracture toughness, and tensile strength of the ceramics that prepared with 10% high concentration ammonia water reach 2.82g/cm 3, 1.07MPam1/2, and 18.2MPa, respectively.

Original languageEnglish
Title of host publicationMechanics and Material Engineering for Science and Experiments
EditorsY. Zhou, Y. Ghu, Z. Li, Y. Zhou, Y. Gu, Z. Li
Pages214-217
Number of pages4
Publication statusPublished - 2003 Oct 17
EventProceedings of the International Symposium of Young Scholars on Mechanics and Material Engineering for Science and Experiments - Changsha/Zhangjiajie, China
Duration: 2001 Aug 112001 Aug 16

Publication series

NameMechanics and Material Engineering for Science and Experiments

Other

OtherProceedings of the International Symposium of Young Scholars on Mechanics and Material Engineering for Science and Experiments
CountryChina
CityChangsha/Zhangjiajie
Period01/8/1101/8/16

Keywords

  • Hydrothermal hot pressing
  • Hydroxyapatite
  • Octacalcium phosphate

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Low temperature synthesis of hydroxyapatite ceramics from octacalcium phosphate by hydrothermal hot pressing'. Together they form a unique fingerprint.

  • Cite this

    Li, J., Onoki, T., Liu, L., Nakahira, A., & Hashida, T. (2003). Low temperature synthesis of hydroxyapatite ceramics from octacalcium phosphate by hydrothermal hot pressing. In Y. Zhou, Y. Ghu, Z. Li, Y. Zhou, Y. Gu, & Z. Li (Eds.), Mechanics and Material Engineering for Science and Experiments (pp. 214-217). (Mechanics and Material Engineering for Science and Experiments).