Low temperature hydrothermal synthesis of calcium phosphate ceramics: effect of excess Ca precursor on phase behavior

Low temperature hydrothermal synthesis of calcium phosphate ceramics: effect of excess Ca precursor on phase behavior

Low temperature hydrothermal exchange reaction has been used to synthesize calcium phosphate materials comprising hydroxyapatite and β-tricalcium phosphate using CaO and NH4H2PO4 as calcium and phosphorus precursors respectively. The effect of excess of calcium precursor on phase behaviour of these...

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Main Authors: Alqap, Asep Sofwan F., Iis, Sopyan
Format: Article
Language:English
Published: Council of Scientific and Industrial Research (C S I R) 2009
Subjects:
TS Manufactures
Online Access:http://irep.iium.edu.my/11535/
http://irep.iium.edu.my/11535/
http://irep.iium.edu.my/11535/4/Low_temperature_hydrotheraphy11535.pdf
id iium-11535
recordtype eprints
spelling iium-115352012-02-03T07:28:43Z http://irep.iium.edu.my/11535/ Low temperature hydrothermal synthesis of calcium phosphate ceramics: effect of excess Ca precursor on phase behavior Alqap, Asep Sofwan F. Iis, Sopyan TS Manufactures Low temperature hydrothermal exchange reaction has been used to synthesize calcium phosphate materials comprising hydroxyapatite and β-tricalcium phosphate using CaO and NH4H2PO4 as calcium and phosphorus precursors respectively. The effect of excess of calcium precursor on phase behaviour of these materials has been investigated by varying CaO content (0, 10 and 20 mole% excess of 0.1 mole CaO) in the suspension. The as-synthesized paste has been dried followed by calcination at 700-1200 ºC. Results show the formation of Ca-deficient apatite at the lower calcination temperature. Excess of CaO shifts the balance to hydroxyapatite formation at the higher calcination temperature such that β-tricalcium phosphate, β-tricalcium phosphate + hydroxyapatite and hydroxyapatite of higher purity are obtained with 0, 10 and 20 mole% excess CaO, respectively. Council of Scientific and Industrial Research (C S I R) 2009 Article NonPeerReviewed application/pdf en http://irep.iium.edu.my/11535/4/Low_temperature_hydrotheraphy11535.pdf Alqap, Asep Sofwan F. and Iis, Sopyan (2009) Low temperature hydrothermal synthesis of calcium phosphate ceramics: effect of excess Ca precursor on phase behavior. Indian Journal Chemistry A, 48A. pp. 1492-1500. ISSN O975-0975 http://nopr.niscair.res.in/handle/123456789/59
repository_type Digital Repository
institution_category Local University
institution International Islamic University Malaysia
building IIUM Repository
collection Online Access
language English
topic TS Manufactures
spellingShingle TS Manufactures
Alqap, Asep Sofwan F.
Iis, Sopyan
Low temperature hydrothermal synthesis of calcium phosphate ceramics: effect of excess Ca precursor on phase behavior
description Low temperature hydrothermal exchange reaction has been used to synthesize calcium phosphate materials comprising hydroxyapatite and β-tricalcium phosphate using CaO and NH4H2PO4 as calcium and phosphorus precursors respectively. The effect of excess of calcium precursor on phase behaviour of these materials has been investigated by varying CaO content (0, 10 and 20 mole% excess of 0.1 mole CaO) in the suspension. The as-synthesized paste has been dried followed by calcination at 700-1200 ºC. Results show the formation of Ca-deficient apatite at the lower calcination temperature. Excess of CaO shifts the balance to hydroxyapatite formation at the higher calcination temperature such that β-tricalcium phosphate, β-tricalcium phosphate + hydroxyapatite and hydroxyapatite of higher purity are obtained with 0, 10 and 20 mole% excess CaO, respectively.
format Article
author Alqap, Asep Sofwan F.
Iis, Sopyan
author_facet Alqap, Asep Sofwan F.
Iis, Sopyan
author_sort Alqap, Asep Sofwan F.
title Low temperature hydrothermal synthesis of calcium phosphate ceramics: effect of excess Ca precursor on phase behavior
title_short Low temperature hydrothermal synthesis of calcium phosphate ceramics: effect of excess Ca precursor on phase behavior
title_full Low temperature hydrothermal synthesis of calcium phosphate ceramics: effect of excess Ca precursor on phase behavior
title_fullStr Low temperature hydrothermal synthesis of calcium phosphate ceramics: effect of excess Ca precursor on phase behavior
title_full_unstemmed Low temperature hydrothermal synthesis of calcium phosphate ceramics: effect of excess Ca precursor on phase behavior
title_sort low temperature hydrothermal synthesis of calcium phosphate ceramics: effect of excess ca precursor on phase behavior
publisher Council of Scientific and Industrial Research (C S I R)
publishDate 2009
url http://irep.iium.edu.my/11535/
http://irep.iium.edu.my/11535/
http://irep.iium.edu.my/11535/4/Low_temperature_hydrotheraphy11535.pdf
first_indexed 2023-09-18T20:20:50Z
last_indexed 2023-09-18T20:20:50Z
_version_ 1777408095826214912

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