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Effect of calcination on the sintering behaviour of hydroxyapatite

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dc.citedby3
dc.contributor.authorThe Y.C.en_US
dc.contributor.authorTan C.Y.en_US
dc.contributor.authorRamesh S.en_US
dc.contributor.authorPurbolaksono J.en_US
dc.contributor.authorTan Y.M.en_US
dc.contributor.authorChandran H.en_US
dc.contributor.authorTeng W.D.en_US
dc.contributor.authorYap B.K.en_US
dc.contributor.authorid56451004900en_US
dc.contributor.authorid16029485400en_US
dc.contributor.authorid41061958200en_US
dc.contributor.authorid8621252500en_US
dc.contributor.authorid55877494100en_US
dc.contributor.authorid55821216200en_US
dc.contributor.authorid36855788900en_US
dc.contributor.authorid26649255900en_US
dc.date.accessioned2023-05-16T02:46:31Z
dc.date.available2023-05-16T02:46:31Z
dc.date.issued2014
dc.description.abstractIn this study, a wet chemically produced hydroxyapatite (HA) powder was subjected to calcination at 700, 800, 900 and 1000°C. Subsequently, the sintering behaviour of these calcined powders was studied at various temperatures, ranging from 1050 to 1350°C. XRD results revealed that calcination has no effect on the phase stability of hydroxyapatite. However, the XRD peaks showed that the crystallinity of the powder increased with increasing calcination temperature. The specific surface area of powder reduced drastically from 60.74 m2·g-1 to 9.45 m2·g-1 with increasing calcination temperature. The SEM micrographs of calcined powder showed the coarsening of powder particles as the calcination temperature was increased. In terms of sinterability, the uncalcined HA powder sintered at 1150°C was found to possess the optimum properties with the following values being recorded: ? 99 % relative density, Vickers hardness of 7.23 GPa and fracture toughness of 1.12 MPa·m1/2. The present research indicated that calcination of the HA powder prior to sintering has a negligible effect on the sintering behaviour of the HA compacts and that calcination at 1000°C was found to be unfavourable to the properties of sintered HA.en_US
dc.description.natureFinalen_US
dc.identifier.epage325
dc.identifier.issue4
dc.identifier.scopus2-s2.0-84924980672
dc.identifier.spage320
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84924980672&partnerID=40&md5=d064fd6b9f17f8616f07ddeea1eb9b0c
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/21994
dc.identifier.volume58
dc.publisherInstitute of Chemical Technologyen_US
dc.sourceScopus
dc.sourcetitleCeramics - Silikaty
dc.titleEffect of calcination on the sintering behaviour of hydroxyapatiteen_US
dc.typeArticleen_US
dspace.entity.typePublication
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