Transparent hydroxyapatite ceramics through gelcasting and low-temperature sintering

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dc.contributor.authorVarma, H
dc.contributor.authorVijayan, SP
dc.contributor.authorBabu, SS
dc.date.accessioned2017-03-10T03:29:05Z
dc.date.available2017-03-10T03:29:05Z
dc.date.issued2002
dc.description.abstractTransparent hydroxyapatite (HAP) was prepared by sintering gel-cast powder compacts at 1000degreesC for 2 h; the resultant HAP material was studied using X-ray diffractometry, transmission electron microscopy, scanning electron microscopy, and microhardness measurement. Nanoscale HAP crystallites were prepared using a precipitation method that involved calcium nitrate and ammonium dihydrogen orthophosphate solutions; the preparation was conducted at a temperature of 0degreesC. The precipitate was gel-cast and sintered at 1000degreesC in the form of a transparent ceramic that had a uniform grain size of 250 mum. The maximum Vickers microhardness obtained for a sample sintered at 1000degreesC was 6.57 GPa. The sintering behavior of gel-cast samples prepared from high-temperature-precipitated HAP was compared with that of material prepared at 0degreesC.
dc.identifier.citation85 ,2;493-495en_US
dc.identifier.urihttps://dspace.sctimst.ac.in/handle/123456789/10627
dc.publisherJOURNAL OF THE AMERICAN CERAMIC SOCIETY
dc.subjectMaterials Science
dc.titleTransparent hydroxyapatite ceramics through gelcasting and low-temperature sintering
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