Effects of annealing in vacuum on the microstructure of silicon-containing calcium phosphate films deposited on a ZrNb alloy by radio-frequency magnetron sputtering

Effects of annealing in vacuum on the microstructure of silicon-containing calcium phosphate films deposited on a ZrNb alloy by radio-frequency magnetron sputtering

Bibliographic Details
Parent link:Vacuum
Vol. 212.— 2023.— [112028, 11 p.]
Corporate Author: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий
Other Authors: Surmeneva M. A. Maria Alexandrovna, Prosolov K. A. Konstantin Alexandrovich, Glukhov I. Ivan, Grubova I. Yu. Irina Yurievna, Botvin V. V. Vladimir Viktorovich, Surmenev R. A. Roman Anatolievich, Sharkeev Yu. P. Yury Petrovich
Summary:Title screen
Coatings were deposited on the surface of a ZrNb alloy by radio-frequency magnetron sputtering using targets consisting of either pure crystalline hydroxyapatite (HA) or silicon-containing HA (Si-HA). The coated ZrNb samples were heated in a vacuum furnace at a pressure of 5 ? 10?5 Torr and temperature 700 °C for 2 h. Precursor powders of silicate-substituted HA [Ca10(PO4)6?x(SiO4)x(OH)2?x, x = 0, 0.5, or 1.72] were used to fabricate the targets for sputtering. The aim of this study was to analyze the effect of Si addition to HA on crystallization behavior and structure of the resulting films using transmission electron microscopy and electron diffraction patterns of selected sites. The average thickness of the films was in the range of 175–345 nm. The Si substitution in HA played a major role in the mechanisms of coating formation and crystallization behavior, which influenced the structure and crystallinity of the layers deposited by radio-frequency magnetron sputtering. Moreover, the results indicate that surface-induced crystallization of the deposited thin films is more pronounced than internal crystallization. A possible mechanism underlying the observed decrease in the crystallization rate with the increasing silicate content in the HA-based films is discussed.
Режим доступа: по договору с организацией-держателем ресурса
Published: 2023
Subjects:
электронный ресурс
труды учёных ТПУ
silicon-containing hydroxyapatite
radio-frequency magnetron sputtering
coatingZrNb alloy
гидроксиапатиты
магнетронное напыление
Online Access:https://doi.org/10.1016/j.vacuum.2023.112028
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=669362

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