ndyag激光轟擊處理純鈦表面對鈦瓷結(jié)合強度影響的實驗研究

《ndyag激光轟擊處理純鈦表面對鈦瓷結(jié)合強度影響的實驗研究》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。

1、AStudyofNd：YAGlaserEtchingontheBondingStrengthofTitaniumtoAbstractObjective：ToinvestigatetheeffectsofNd：YAGlasertreatmentoftitaniumonmicrostructureandthebondingstrengthofporcelaintotitanium．Methods：33non-casttitaniumstripswereprogressivelypolishedby240靛400撐．800≠}and1000jfi}siliconcarbidesandpaperun

2、derrunningwateT,thenthe30stripsweredividedintothreegroups(GroupAtoC，11stripspergroup)randomly．GroupA：sandblasted；GroupB：Nd：YAGlaserirradiatedat20A，15s；GroupC：Nd：YAGlaserirradiatedat20A，30s．Followingsurfacetreatments，microstructuralandchemicalanalysiswereperformedbymeansofelectronmicroscopeexaminati

3、onandEDS，andthesurfaceroughnesswasmeasured．．Low-fusingporcelainwasappliedontothetitaniumspecimensaccordingtothemanufacturer’Sinstructions．Bondingstrengthofthesampleswasmeasuredbyathree—pointbendingtesteraccordingtoIS09693．ElectronmicroscopeexaminationandEDSanalysiswerealsoperformedforonespecimenofe

4、achgroupaftertheshearbondstrengthtesttoevaluatethenatureofthefracturesurface．Results：Therewasasignificantdifferenceinsurfaceroughnesswithrespecttosurfacetreatment(p<0．05)．Thereweredifferentinthesurfacemorphologyandthephasecomponentsofthreegroups．EDSanalysisshowedthatspecimenofAgroupwasconsistingofT

5、ielement，OelementsandA1elements；specimensofgroupBorgroupCwasconsisting．3，萬方數(shù)據(jù)ofTielementonly．GroupC(31．42±2．47MPalproducedthehighestbondstrengthamongthegroups(p

6、tofISO9693．TheelectronmicroscopeexaminationimageafterdebondingofgroupCshowedporcelainretainedonthesurface．Conclusion：LaseretchingoftitaniumsurfacesusinganNd：YAGlaserwaseffectiveinimprovingsurfaceroughnessandwettabilityoftitanium．Lasertreatmentmaybeanalternativemethodtosandblastingforenhancingthebon

7、dingstrengthoflow—fusingporcelaintotitanium．KeyWords：Neodymium：yttrium-aluminum—garnetlaser／Titanium／Three--point·-flexure··test萬方數(shù)據(jù)．^L--L日IJ吾烤瓷熔附金屬全冠(porcelain．fused．to．metalcrown，PFM)也稱金屬烤瓷全冠，具有美觀、強度高等特點，