Adhesion Characterization of Zinc-Substituted Hydroxyapatite Coatings

In this study, hydroxyapatite and Zn-containing hydroxyapatite coatings were produced and characterized with respect to adhesion. The coating technique consists of a two-step hydrothermal process. X-ray diffraction (XRD) analyses showed that, in the first step, the coatings consisted of parascholzit...

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Veröffentlicht in:Key engineering materials 2016-11, Vol.720, p.189-192
Hauptverfasser: Moura, Felipe Nobre, Prado da Silva, Marcelo Henrique, Louro, Luis Henrique Leme, Navarro da Rocha, Daniel, Costa, Andrea Machado
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creator Moura, Felipe Nobre
Prado da Silva, Marcelo Henrique
Louro, Luis Henrique Leme
Navarro da Rocha, Daniel
Costa, Andrea Machado
description In this study, hydroxyapatite and Zn-containing hydroxyapatite coatings were produced and characterized with respect to adhesion. The coating technique consists of a two-step hydrothermal process. X-ray diffraction (XRD) analyses showed that, in the first step, the coatings consisted of parascholzite (JCPDS-01-086-2372), a mixture of parascholzite and monetite (JCPDS-01-071-1759), or parascholzite and brushite (JCPDS-72-0713), depending on Zn concentration in the precursor solution. The second step consisted of an alkali conversion in a KOH solution. The final coating was identified as pure hydroxyapatite (HA) or Zn-doped hydroxyapatite, depending on the precursor solution Zn content. Scratch tests on the pure HA coatings showed higher adhesion, when compared to Zn-substituted HA coatings.
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subjects Adhesion
Adhesion tests
Coatings
Conversion
Hydroxyapatite
Precursors
Scratch tests
Zinc coatings
title Adhesion Characterization of Zinc-Substituted Hydroxyapatite Coatings
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