The structure of an rf-magnetron sputter-deposited silicate-containinghydroxyapatite-based coating investigated by high-resolution techniques; Surface and Coatings Technology; Vol. 218

The structure of an rf-magnetron sputter-deposited silicate-containinghydroxyapatite-based coating investigated by high-resolution techniques; Surface and Coatings Technology; Vol. 218

Bibliographic Details
Parent link:Surface and Coatings Technology
Vol. 218.— 2013.— [P. 39-46]
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ) Физико-технический институт (ФТИ) Кафедра теоретической и экспериментальной физики (ТиЭФ) Центр технологий (ЦТ)
Other Authors: Surmeneva M. A. Maria Alexandrovna, Chaikina M. V., Zaikovskiv V. I., Pichugin V. F. Vladimir Fyodorovich, Buck V., Prymak O., Epple M., Surmenev R. A. Roman Anatolievich
Summary:Title screen
A biocompatible nanostructured silicate-containing hydroxyapatite-based (Si-HA) thin coating was deposited by radio-frequency (RF) magnetron sputtering on silicon and titanium substrates. The morphology of the Si-HA coating was pore-free, dense and followed the topography of the underlying substrates. Energy-dispersive X-ray spectroscopy (EDX) gave molar Ca/P and Ca/(P + Si) ratios of 1.78 and 1.45, respectively. According to XRD-analysis, the coating was nanocrystalline with a crystallite size in the range of 10-50 nm. The ultrastructure of the coating was analyzed by high-resolution transmission electron spectroscopy (HRTEM) combined with fast Fourier transform (FFT) analysis. The average crystallite size calculated by the Rietveld method was in good agreement with the HRTEM results. Moreover, HRTEM-observations indicated the presence of atomic layer misorientations originating from imperfections between the nanocrystals in the coating. The average coating nanohardness (11.6 ± 1.7 GPa) was significantly higher than that of the uncoated Ti substrate (4.0 ± 0.3 GPa), whereas no significant difference between the Young's modulus of the coating (125 ± 20 GPa) and the substrate (115 ± 10 GPa) was found. Immersion of the coated substrates in simulated body fluid (SBF) led to the deposition of an apatite layer.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2013
Subjects:
электронный ресурс
труды учёных ТПУ
calcium phosphate
coatings
nanocomposites
implants
фосфат кальция
покрытия
нанокомпозиты
имплантаты
Online Access:http://dx.doi.org/10.1016/j.surfcoat.2012.12.023
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=647440

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