Enhanced Hardness of Transparent HAp Ceramic by Microstructure Refinement-中国期刊网

摘要 Transparenthydroxyapatite(HAp)ceramicswiththegrainsizeranging86-1300nmweresuccessfullysynthesizedbysparkplasmasintering(SPS)at925-1200℃.Allthesampleachievedfinaldensityhigherthan99.7%.ThephasestabilitywasidentifiedbyX-raydiffraction(XRD)andFouriertransforminfraredspectroscopy(FTIR).TheexperimentalresultsindicatethatthereisnodecompositionordehydroxylationduringtheSPSprocesses.TheinfluencesofmicrostructurerefinementonthehardnesswereinvestigatedusingHallPetch(H-P)relationship,andthehardnessoftransparentHApceramicincreaseswiththedecreaseofgrainsize.Itisdemonstratedthatthegrainboundariesanddefectsplayimportantrolesonthehardness.

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Enhanced Hardness of Transparent HAp Ceramic by Microstructure Refinement

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Enhanced Hardness of Transparent HAp Ceramic by Microstructure Refinement

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