两步电化学沉积方法在金属钛表面沉积荆棘状微纳结构羟基磷灰石涂层

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1、AbstractThespecialthomedmorphologyofHydroxyapatitecoatings(TrtA)withmicro．nallosizewaspreparedbytwostepselectrochemicaldepositionsonthesurfaceofTitaniuminthisarticle，andthedepositionprocessandformingmechanismofTHAwerealsoanalyzed．Themorphology，compositionsandstru

2、ctureofTHAwereconformedbyseveralcharacterizationmethods：Field-emission-typeScanningElecllonMicroscope(FESEM)wascarriedouttoexaminetheTI-Ⅸsthomedmorphology；thechemicalcompositionsofHydroxyapatite(HA)forTHAwereprovedbYEnergyDispersiveX-rayDetector(EDX)，LowangleX-ra

3、yDiffractometer(yaug)andGrazingReflectionAbsorptionFourierTransformInfraredSpectroscopyfFTIR-GIR)；TransmissionElectronMicroscope(TEM)wasusedtofurtherconfirmthattheTHAWasmadeupofHA，andthethronedmorphologyconsistedoftwodifferentmicrostructures：singlecrystalstructur

4、eandpolycrystallinestructure．TheformingmechanismofTHA'smorphologyWasanalyzedbyFESEMandothermethods。Theresultsshowedthatme11ighconcentrationsofelectrolytes，hi曲depositionvoltageandlowdepositiontemperatureintheseconddepositionstepallplayedimportantrolesonthisspecial

5、morphologyofTHA．Inaddition，thetrisodiumcitrateintheelectrolytemadethehydroxyapatitecontinuouslygrowonthebasicrod．1ikestructurebythemesocrystalself-assemblyprocess．Therefore，itWasakeychemicaldrugtoformthisthronedmico—nanostructure．Theresuitsofthereleasingratetesto

6、fCalciumion(Ca什)invitroandthecontactangletestbothshowedthatthespecialthronedmico。nanomorphologyobviouslychangedthephysicochemicalpropertyoftraditionalHydroxyapatiterod(RHA)andalsomadetheTHAhaveperfectwettabilityandhavefastandsuitablereleasingrateofCa2+，whichwould

7、bebetterforthepromotionofitsbiocompatibility．TheresultsofALPandOCalsoprovedthattheTHApreformedverywellonitsbiocompatibility．Keyword：HA；micro．nanostructure；thronedmorphology；trisodiumcitrate；electrochemicaldepositionIII目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．IAbstrac

8、t．⋯⋯⋯．⋯．⋯．⋯．．⋯．．⋯．．⋯⋯⋯⋯．．⋯．⋯．．⋯．⋯⋯．⋯⋯⋯⋯⋯．⋯⋯．⋯．⋯．⋯．⋯⋯⋯．⋯．．．．III目录⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．V第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．1前言⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯