Structure and electrical potential of calcium phosphate coatings modified with aluminum oxyhydroxide nanoparticles

The effect of the introduction charged aluminum oxyhydroxide (AO) nanoparticles into porous coatings from calcium phosphate formed by micro-arc oxidation on their electrical potential and structure was studied. modification resulted in changes morphology elemental composition coatings. selection coating functionalization parameters obtaining homogeneously distributed form agglomerates, providing maximum change An increase duration ultrasonic dispersion (USD) initial AlN powder suspension 10 to 60 min an surface roughness coatings, parameter Ra, 3.5 5.5 µm led −85 −35 mV. At same time, content decreased 3 1 at.% with USD minutes. contributed improvement corrosion properties, namely, 0.1 0.2 mV a decrease current 2.5 ∙10−9 1.1·10−9 A ∙ cm2.