Formation mechanism of biocompatible fluoride conversion coating on AZ31 magnesium alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F15%3APU117240" target="_blank" >RIV/00216305:26310/15:PU117240 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Formation mechanism of biocompatible fluoride conversion coating on AZ31 magnesium alloy

Popis výsledku v původním jazyce

Magnesium alloys are characterized by high strength to weight ratio and vibration absorbance, but the main disadvantage, limiting their usage in engineering and medical fields, is magnesium high corrosion rate. Several methods were developed to improve corrosion resistivity of magnesium alloys. This study focuses on improving corrosion resistance of AZ31 magnesium alloy for biomedical applications by conversion coating. Biocompatible fluoride conversion coating was prepared by immersion of AZ31 magnesium alloy in molten Na[BF4] salt kept at 693 K. Dependence of conversion coating growth on immersion time was evaluated, focusing on the coating thickness and compactness. Mechanism of fluoride conversion coating forming was studied in air-free atmosphere.The experiments were carried out to determine if the coating formation was controlled by diffusion or by chemical reaction of the magnesium alloy and the melt. Diffusion process seems to be controlling the coating formation. It was shown

Název v anglickém jazyce

Formation mechanism of biocompatible fluoride conversion coating on AZ31 magnesium alloy

Popis výsledku anglicky

Magnesium alloys are characterized by high strength to weight ratio and vibration absorbance, but the main disadvantage, limiting their usage in engineering and medical fields, is magnesium high corrosion rate. Several methods were developed to improve corrosion resistivity of magnesium alloys. This study focuses on improving corrosion resistance of AZ31 magnesium alloy for biomedical applications by conversion coating. Biocompatible fluoride conversion coating was prepared by immersion of AZ31 magnesium alloy in molten Na[BF4] salt kept at 693 K. Dependence of conversion coating growth on immersion time was evaluated, focusing on the coating thickness and compactness. Mechanism of fluoride conversion coating forming was studied in air-free atmosphere.The experiments were carried out to determine if the coating formation was controlled by diffusion or by chemical reaction of the magnesium alloy and the melt. Diffusion process seems to be controlling the coating formation. It was shown

Druh

O - Ostatní výsledky

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů