The preparation of calcium phosphate coatings on titanium and nickel-titanium by rf-magnetron-sputtered deposition: Composition, structure and micromechanical properties

Dades bibliogràfiques
Parent link:Surface and Coatings Technology
Vol. 202, iss. 16.— 2008.— [P. 3913-3920]
Altres autors: Pichugin V. F. Vladimir Fyodorovich, Surmenev R. A. Roman Anatolievich, Shesterikov E. V. Evgeny Viktorovich, Ryabtseva M. A., Eshenko E. V., Tverdokhlebov S. I. Sergei Ivanovich, Prymak O., Epple M.
Sumari:Title screen
Thin calcium phosphate coatings with a thickness of 0.09 to 2.7 µm were prepared by radio-frequency magnetron sputtering deposition on NiTi and Ti substrates at a substrate temperature of 500 °C in argon atmosphere. Scanning electron microscopy (SEM) showed that the surface structure is uniform and dense without visible defects (pores and microcracks). Rutherford backscattering spectroscopy (RBS) and energy-dispersive X-ray spectroscopy (EDX) confirmed that the coating contains calcium, phosphorus, and oxygen with a uniform composition. Crystallographically, the coating consists of crystalline hydroxyapatite which is also supported by infrared spectroscopy. The mechanical characteristics of the coating were measured by nanoindentation (Vickers indenter), giving a nanohardness of 10 GPa and a Young's modulus of 110 GPa. The strength of adhesion of the calcium phosphate coating to the metallic substrates depended on the coating's thickness and decreased for a thickness larger than 1.6 µm. No difference was observed between NiTi and Ti substrates.
Режим доступа: по договору с организацией-держателем ресурса
Publicat: 2008
Matèries:
Accés en línia:http://dx.doi.org/10.1016/j.surfcoat.2008.01.038
Format: Electrònic Capítol de llibre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=647450

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