Comparison of Mechanical and Barrier Properties of Al2O3/TiO2/ZrO2 Layers in Oxide-Hydroxyapatite Sandwich Composite Coatings Deposited by Sol-Gel Method on Ti6Al7Nb Alloy

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dc.contributor.authorPietrzyk, Bozena
dc.contributor.authorKucharski, Daniel
dc.contributor.authorKołodziejczyk, Łukasz
dc.contributor.authorMiszczak, Sebastian
dc.contributor.authorFijalkowski, Mateusz
dc.date.accessioned2020-03-03T08:08:21Z
dc.date.available2020-03-03T08:08:21Z
dc.date.issued2020-02
dc.description.abstractIn this study, coatings of different oxides (TiO2, Al2O3, ZrO2) and hydroxyapatite (HAp) as well as sandwich composite hydroxyapatite with an oxides sublayer (oxide+HAp) were deposited on Ti6Al7Nb alloy using the sol-gel dip-coating method. The coatings were characterized in terms of morphology (optical microscope), surface topography (AFM), thickness (ellipsometry), and crystal structure (XRD/GIXRD). The mechanical properties of the coatings-hardness, Young's modulus, and adhesion to the substrate-were examined using nanoindentation and scratch tests. The barrier properties of the coatings against the migration of aluminum ions were examined by measuring their concentration after soaking in Hank's balanced salt solution (HBSS) with the use of optical emission spectrometry of inductively coupled plasma (ICPOES). It was found that all the oxide and HAp coatings reduced the permeation of Al ions from the Ti6Al7Nb alloy substrate. The best features revealed an Al2O3 layer that had excellent barrier properties and the best adhesion to the substrate. Al2O3 as a sublayer significantly improved the properties of the sandwich composite HAp coating.cs
dc.format.extent17 strancs
dc.identifier.doi10.3390/ma13030502
dc.identifier.urihttps://dspace.tul.cz/handle/15240/154600
dc.identifier.urihttps://www.mdpi.com/1996-1944/13/3/502
dc.language.isocscs
dc.publisherMDPI
dc.relation.ispartofMaterials
dc.subjectBarriercs
dc.subjectCoatingcs
dc.subjectCompositecs
dc.subjectHydroxyapatitecs
dc.subjectLayeredcs
dc.subjectOxidecs
dc.subjectPermeationcs
dc.subjectSol-gelcs
dc.titleComparison of Mechanical and Barrier Properties of Al2O3/TiO2/ZrO2 Layers in Oxide-Hydroxyapatite Sandwich Composite Coatings Deposited by Sol-Gel Method on Ti6Al7Nb Alloycs
local.accessopen access
local.article.number502
local.relation.issue3
local.relation.volume13
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