0000000000585517

AUTHOR

J. Breme

showing 3 related works from this author

Influence of titanium-vanadium alloys on cell morphology: electron microscopy and ESCA studies

2000

Titanium and its alloys provide optimum metallurgical properties for implants. The formation of an oxide layer favours compatibility with the adjacent hard and soft tissues. Research focuses on further optimizing the passive layer, particularly with respect to minimizing metal ion migration into the tissues. The present study concentrates on two alloys (Ti6A14V and Til.5A125V) coated with oxide layers generated by different techniques: thermal oxidation, anodic oxidation and sol-gel treatment. Only thermal oxidation fails to reduce surface and subsurface concentrations of vanadium, whereas other treatments avoid the element in the outermost surface areas of the alloys. Additionally, the the…

Thermal oxidationMaterials scienceOxideTitanium alloychemistry.chemical_elementMineralogyVanadiumSurfaces and InterfacesGeneral Chemistryequipment and suppliesCondensed Matter PhysicsCell morphologySurfaces Coatings and FilmsMetalchemistry.chemical_compoundchemistryChemical engineeringvisual_artMaterials Chemistryvisual_art.visual_art_mediumTitaniumSol-gelSurface and Interface Analysis
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Interactions between cells and titanium surfaces.

2002

The interaction between cells and implant materials is determined by the surface structure and/or surface composition of the material. In the past years, titanium and titanium alloys have proved their superiority over other implant materials in many clinical applications. This predominant behaviour is caused by a dense passive oxide layer which forms within milliseconds in oxidizing media. Titanium dioxide layers of 100 nm thickness were produced on the surface of cp-titanium grade 2, and on an experimental alloy of high vanadium content (Ti1.5Al25V) as a harmful control. The layers were produced by thermal and anodic oxidation and by coating by means of the sol-gel process. The resulting o…

Materials scienceSurface PropertiesOxidechemistry.chemical_elementVanadiumBioengineeringSensitivity and SpecificityCell Linechemistry.chemical_compoundMiceCoated Materials BiocompatibleChlorocebus aethiopsMaterials TestingAlloysCell AdhesionAnimalsSurface layerMolecular BiologyVero CellsCytoskeletonTitaniumOsteoblastsMetallurgytechnology industry and agricultureTitanium alloyFibroblastsequipment and suppliesActinsTitanium oxidechemistryChemical engineeringTitanium dioxideLayer (electronics)Cell DivisionBiotechnologyTitaniumBiomolecular engineering
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XPS analysis of sol-gel-generated mixed-oxide layers for biomedical application

2002

The excellent biocompatibility of titanium and its alloys is associated with the properties of their dense TiO2 layer on the surface. The adsorption of proteins of the body fluid to implant surfaces depends on the properties of the surface oxide layer, especially the electronic structure. Therefore, tailoring of the oxide layer is a method for influencing protein adsorption. In this study, titanium platelets are coated by the sol–gel process with mixed oxides containing the biocompatible elements Ti, Nb, Zr and Ta. In order to verify the composition of the produced oxide layer, which can differ from the adjusted precursor composition in the sol because of different reactivities of the precu…

Materials scienceAnalytical chemistryOxidechemistry.chemical_elementSurfaces and InterfacesGeneral ChemistryCondensed Matter PhysicsSurfaces Coatings and Filmschemistry.chemical_compoundAdsorptionX-ray photoelectron spectroscopyChemical engineeringchemistryMaterials ChemistryMixed oxideLayer (electronics)Sol-gelTitaniumProtein adsorptionSurface and Interface Analysis
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