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Si（100）基体上的羟磷灰石/Al₂O₃复合材料双涂层的制备和表征（英文）

Fabrication and characterization of hydroxyapatite/Al₂O₃ composite biocoating on Si（100）substrate

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【作者】何莉萍；

【Author】 Zhen-Jun Wu~2,Li-Ping He~(1*),and Zong-Zhang Chen~3,Tiu-Wing Mai~4 1 State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body(Hunan Univ.), College of Mechanical Engineering,Hunan University,Changsha,Hunan 410082,P.R.China 2 College of Chemistry and Chemical Engineering,Hunan University,Changsha,Hunan,China 3.Centre for Advanced Materials Technology(CAMT),School of Aerospace,Mechanical and Mechatronic Engineering J07,University of Sydney,Sydney,NSW 2006,Australia

【机构】 State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body(Hunan Univ.),College of Mechanical Engineering,Hunan University；

【摘要】 <正>A novel composite biocoating of hydroxyapatite（HA）/Al203 has been successfully fabricated on Si（100） substrate by a hybrid technique of physical vapor deposition（PVD）,anodization,and electrodeposition.Scanning electron microscope （SEM）,energy dispersive spectrometry（EDS）,and X-ray diffraction（XRD） were employed to investigate the morphologies and compositions of the HA/Al₂O₃ composite biocoating.It is found that Ca-deficient hydroxyapatite（CDHA） coating holding a Ca/P atomic ratio of 1.61 has been directly electrodeposited onto porous anodic Al₂O₃ with 1.5～3μm pore diameter formed by anodization of PVD-deposited aluminum layer on Si（100） and subsequent chemical dissolution.The embedding of HA coating into porous anodic Al₂O₃ results in a sandwich-like structure in the finally fabricated HA/Al₂O₃ composite biocoating on Si（100）.更多还原

【Abstract】 A novel composite biocoating of hydroxyapatite（HA）/Al203 has been successfully fabricated on Si（100） substrate by a hybrid technique of physical vapor deposition（PVD）,anodization,and electrodeposition.Scanning electron microscope （SEM）,energy dispersive spectrometry（EDS）,and X-ray diffraction（XRD） were employed to investigate the morphologies and compositions of the HA/Al₂O₃ composite biocoating.It is found that Ca-deficient hydroxyapatite（CDHA） coating holding a Ca/P atomic ratio of 1.61 has been directly electrodeposited onto porous anodic Al₂O₃ with 1.5～3μm pore diameter formed by anodization of PVD-deposited aluminum layer on Si（100） and subsequent chemical dissolution.The embedding of HA coating into porous anodic Al₂O₃ results in a sandwich-like structure in the finally fabricated HA/Al₂O₃ composite biocoating on Si（100）.更多还原