Processing and properties of transparent hydroxyapatite and β tricalcium phosphate obtained by HIP process

被引：37

作者：

Boilet, Laurent ^{[1
]}

Descamps, Michel ^{[2
,3
]}

Rguiti, Emmanuelle ^{[2
,3
]}

Tricoteaux, Arnaud ^{[2
,3
]}

Lu, Jianxi ^{[4
]}

Petit, Fabrice ^{[1
]}

Lardot, Veronique ^{[1
]}

Cambier, Francis ^{[1
]}

Leriche, Anne ^{[2
,3
]}

机构：

[1] Belgian Ceram Res Ctr BCRC EMRA, B-7000 Mons, Belgium

[2] Univ Lille Nord France, LMCPA, F-59000 Lille, France

[3] UVHC, ZI Champ Abbesse, F-59600 Maubeuge, France

[4] Biocetis SARL, F-34660 Cournonsec, France

来源：

CERAMICS INTERNATIONAL | 2013年 / 39卷 / 01期

关键词：

Sintering; Hydroxyapatite; beta-Tricalcium phosphate; Mechanical properties; MECHANICAL-PROPERTIES; CERAMICS; BIOCERAMICS; MICROSTRUCTURE;

D O I：

10.1016/j.ceramint.2012.06.023

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：

Stoichiometric beta-tricalcium phosphate (beta-TCP) and hydroxyapatite (HA) powders were synthesized by chemical precipitation of aqueous solutions of diammonium phosphate and calcium nitrate. After a calcination treatment and a milling step, the powders were shaped by slip casting. The sintering temperature effect on the relative density and the average grain size was investigated. By natural sintering at 1200 and 1120 degrees C, densities of 98% and 99% were obtained for HA and TCP, respectively. After determination of minimum temperatures to obtain only closed porosity and a pre-sintering at these temperatures, hot isostatic pressing (HIP) treatment was carried out. Transparent or translucent samples were obtained, indicating a relative density very close to the theoretical value (>99.9%). Mechanical properties (three-point bending strength, fracture toughness, Young's modulus and Vickers hardness) were measured on both materials with similar grain size (similar to 1 mu m). Bending strengths of 181 and 105 MPa were measured for TCP and HA, respectively. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：283 / 288

页数：6

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