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Title: Densification Process of OH Controlled Hydroxyapatite Ceramics by Spark Plasma Sintering

Abstract

Calcium hydroxyapatite, Ca10(PO4)6(OH)2:HA, is the inorganic principle component of natural bones and teeth. It has been already suggested that the amount of OH ion in the crystal structure of HA is closely related to the biocompatibility. The amount of OH ion in current HA, however, has not been controlled. In order to prepare more functional HA ceramics, the amount of OH ion must be controlled. In this study, HA ceramics with different OH amount were prepared from fine HA crystals by spark plasma sintering (SPS). In order to reveal the ideal sintering conditions for preparation of transparent ceramics, densification process on SPS was investigated. The samples were pressed uniaxialy under 60 MPa, and then they were heated by SPS at 800 deg. C, 900 deg. C and 1000 deg. C for 10 min with the heating rate of 25 deg. C{center_dot}min-1. The quantity of OH ion in HA ceramics sintered by SPS was decreased with increasing temperature of sintering. Transparent HA ceramics were prepared by SPS at 900 deg. C and 1000 deg. C. In analysis of the densification behavior during sintering of HA by SPS, dominant sintering mechanism was plastic flow of densification. Transparent ceramics should be the mostmore » suitable materials to investigate the interface between human cells and ceramics.« less

Authors:
 [1]; ; ;  [2]
  1. Institution of Fluid Science, Tohoku University, Aoba 6-6-20 Aramaki, Aoba-ku, Sendai 980-8579 (Japan)
  2. Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20 Aramaki, Aoba-ku, Sendai 980-8579 (Japan)
Publication Date:
OSTI Identifier:
20798651
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 833; Journal Issue: 1; Conference: 3. international workshop on water dynamics, Sendai (Japan), 16-17 Nov 2005; Other Information: DOI: 10.1063/1.2207069; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; ANIMAL CELLS; APATITES; CALCIUM PHOSPHATES; CERAMICS; CRYSTAL STRUCTURE; CRYSTALS; HEATING RATE; INTERFACES; IONS; PLASMA; PLASTICS; PROCESSING; SINTERING; TEETH

Citation Formats

Kawagoe, D., Koga, Y., Ishida, E. H., and Ioku, K. Densification Process of OH Controlled Hydroxyapatite Ceramics by Spark Plasma Sintering. United States: N. p., 2006. Web. doi:10.1063/1.2207069.
Kawagoe, D., Koga, Y., Ishida, E. H., & Ioku, K. Densification Process of OH Controlled Hydroxyapatite Ceramics by Spark Plasma Sintering. United States. doi:10.1063/1.2207069.
Kawagoe, D., Koga, Y., Ishida, E. H., and Ioku, K. Mon . "Densification Process of OH Controlled Hydroxyapatite Ceramics by Spark Plasma Sintering". United States. doi:10.1063/1.2207069.
@article{osti_20798651,
title = {Densification Process of OH Controlled Hydroxyapatite Ceramics by Spark Plasma Sintering},
author = {Kawagoe, D. and Koga, Y. and Ishida, E. H. and Ioku, K.},
abstractNote = {Calcium hydroxyapatite, Ca10(PO4)6(OH)2:HA, is the inorganic principle component of natural bones and teeth. It has been already suggested that the amount of OH ion in the crystal structure of HA is closely related to the biocompatibility. The amount of OH ion in current HA, however, has not been controlled. In order to prepare more functional HA ceramics, the amount of OH ion must be controlled. In this study, HA ceramics with different OH amount were prepared from fine HA crystals by spark plasma sintering (SPS). In order to reveal the ideal sintering conditions for preparation of transparent ceramics, densification process on SPS was investigated. The samples were pressed uniaxialy under 60 MPa, and then they were heated by SPS at 800 deg. C, 900 deg. C and 1000 deg. C for 10 min with the heating rate of 25 deg. C{center_dot}min-1. The quantity of OH ion in HA ceramics sintered by SPS was decreased with increasing temperature of sintering. Transparent HA ceramics were prepared by SPS at 900 deg. C and 1000 deg. C. In analysis of the densification behavior during sintering of HA by SPS, dominant sintering mechanism was plastic flow of densification. Transparent ceramics should be the most suitable materials to investigate the interface between human cells and ceramics.},
doi = {10.1063/1.2207069},
journal = {AIP Conference Proceedings},
number = 1,
volume = 833,
place = {United States},
year = {Mon May 15 00:00:00 EDT 2006},
month = {Mon May 15 00:00:00 EDT 2006}
}