Applying X-rays in material analysis

Kogan, V.; Bethke, Klaus; Vries, R. de

doi:10.1016/s0168-9002(03)01640-1

Cited by 5 publications

(1 citation statement)

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“…XRR is based on measuring the scattering from the layer and the substrate that differ in their density. This method provides information about layer thickness and density [ 31 , 32 ]. The parameters of the layer were found by fitting the experimental reflectometric curves to the theoretical curves [ 33 ].…”

Section: Methodsmentioning

confidence: 99%

Structural analysis and corrosion studies on an ISO 5832-9 biomedical alloy with TiO2 sol–gel layers

Burnat

Dercz

Błaszczyk

2013

J Mater Sci: Mater Med

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The aim of this study was to demonstrate the relationship between the structural and corrosion properties of an ISO 5832-9 biomedical alloy modified with titanium dioxide (TiO 2 ) layers. These layers were obtained via the sol-gel method by acid-catalyzed hydrolysis of titanium isopropoxide in isopropanol solution. To obtain TiO 2 layers with different structural properties, the coated samples were annealed at temperatures of 200, 300, 400, 450, 500, 600 and 800°C for 2 h. For all the prepared samples, accelerated corrosion measurements were performed in Tyrode's physiological solution using electrochemical methods. The most important corrosion parameters were determined: corrosion potential, polarization resistance, corrosion rate, breakdown and repassivation potentials. Corrosion damage was analyzed using scanning electron microscopy. Structural analysis was carried out for selected TiO 2 coatings annealed at 200, 400, 600 and 800°C. In addition, the morphology, chemical composition, crystallinity, thickness and density of the deposited TiO 2 layers were determined using suitable electron and X-ray measurement methods. It was shown that the structure and character of interactions between substrate and deposited TiO 2 layers depended on annealing temperature. All the obtained TiO 2 coatings exhibit anticorrosion properties, but these properties are related to the crystalline structure and character of substrate-layer interaction. From the point of view of corrosion, the best TiO 2 sol-gel coatings for stainless steel intended for biomedical applications seem to be those obtained at 400°C.

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Section: Methodsmentioning

confidence: 99%