Influence of annealing on the structure of nanoporous oxide films on the surface of titanium‒aluminum powder alloy
2016 (English)In: Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques, ISSN 1027-4510, Vol. 10, no 5, 933-941 p.Article in journal (Refereed) Published
Oxide films obtained during anodization of Ti‒40% Al sintered powder samples in fluorine-containing electrolytes are investigated. With scanning electron microscopy and X-ray phase analysis, it is demonstrated that an X-ray amorphous nanoporous anodic oxide film is formed on the surface of the powder microparticles under optimal anodization conditions. After annealing at T = 1093 K in air and vacuum (10‒2 Pa), the oxide films are revealed to crystallize with its regular porous structure retained. The composition of the polycrystalline anodic-oxide films annealed in air is a mixture involving TiO2 (anatase and rutile) and α- and γ-Al2O3 phases and Ti2O3 and Al2TiO5 traces. The vacuum annealing process makes it possible to identify TiO2, in which anatase is the main phase, α- and γ-Al2O3, and Ti2O3 and TiO traces. However, rutile is not revealed. The presented results indicate that the application of the anodic nanostructuring of Ti‒40% Al powders is promising for the obtainment of new photocatalytic active nanomaterials. © 2016, Pleiades Publishing, Ltd.
Place, publisher, year, edition, pages
Moscow: Maik Nauka/Interperiodica, 2016. Vol. 10, no 5, 933-941 p.
anodization, nanoporous oxide films, titanium‒aluminum powder, alloy, annealing, crystallization
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:hh:diva-32919DOI: 10.1134/S102745101605013XISI: 000389149000007ScopusID: 2-s2.0-84991824708OAI: oai:DiVA.org:hh-32919DiVA: diva2:1061963