Densification behaviour and mechanisms of synthetic hydroxyapatites

被引：636

作者：

Landi, E ^{[1
]}

Tampieri, A ^{[1
]}

Celotti, G ^{[1
]}

Sprio, S ^{[1
]}

机构：

[1] IRTEC, CNR, I-48018 Faenza, Italy

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2000年 / 20卷 / 14-15期

关键词：

apatite; densification; hydroxyapatite; powders-chemical preparation; sintering;

D O I：

10.1016/S0955-2219(00)00154-0

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Starting from Ca(OH)(2) and H3PO4 hydroxyapatite powders with three different crystallinity degrees have been prepared and characterized. Densification extent and mechanisms were studied through dilatometric measurements in isothermal regime in the range of temperature 750-1250 degreesC: the influence of different powder features (including the effect of calcination treatment) have been evaluated. Powder characterized by the lowest crystallinity degree has the highest densification extent overlapping phenomena occurring during the sintering treatments are responsible for unexpectedly low values found for the shrinkage rate, which can easily lead to a misidentification of the rate controlling mechanism. An interpretation of the densification mechanism, consistent with all experimental findings, is proposed. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：2377 / 2387

页数：11

共 29 条

[1] SYNTHESIS AND PROCESSING OF HYDROXYAPATITE CERAMIC TAPES WITH CONTROLLED POROSITY
ARITA, IH
CASTANO, VM
WILKINSON, DS
[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, 1995, 6 (01) : 19 - 23
[2] Boiko Yu., 1999, Science of Sintering, V31, P151
[3] Bossert J., 1998, Science of Sintering, V30, P19
[4] Kinetics of thermal decomposition of hydroxyapatite bioceramics
Cihlár, J
Buchal, A
Trunec, M
[J]. JOURNAL OF MATERIALS SCIENCE, 1999, 34 (24) : 6121 - 6131
[5] BIOCERAMICS CONSISTING OF CALCIUM-PHOSPHATE SALTS
DEGROOT, K
[J]. BIOMATERIALS, 1980, 1 (01) : 47 - 50
[6] DOI Y, 1995, J BIOMED MATER RES, V29, P1451, DOI 10.1002/jbm.820291117
[7] CRYSTALLOGRAPHIC STRUCTURE AND SURFACE-MORPHOLOGY OF SINTERED CARBONATED APATITES
ELLIES, LG
NELSON, DGA
FEATHERSTONE, JDB
[J]. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH, 1988, 22 (06): : 541 - 553
[8] Han Y, 1999, J BIOMED MATER RES, V45, P198, DOI 10.1002/(SICI)1097-4636(19990605)45:3<198::AID-JBM6>3.0.CO
[9] 2-Q
[10] DETERMINATION OF THE CA/P RATIO IN CALCIUM-DEFICIENT HYDROXYAPATITE USING X-RAY-DIFFRACTION ANALYSIS
ISHIKAWA, K
DUCHEYNE, P
RADIN, S
[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, 1993, 4 (02) : 165 - 168

← 1 2 3 →