Structural and corrosion characterization of biodegradable Mg-Zn alloy castings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F12%3A43894478" target="_blank" >RIV/60461373:22310/12:43894478 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4149/km_2012_6_415" target="_blank" >http://dx.doi.org/10.4149/km_2012_6_415</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4149/km_2012_6_415" target="_blank" >10.4149/km_2012_6_415</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structural and corrosion characterization of biodegradable Mg-Zn alloy castings

Popis výsledku v původním jazyce

As-cast Mg, Mg-1Zn, Mg-4Zn and Mg-6Zn (wt.%) alloys were studied in this work. The alloys were prepared by gravity casting into a metal mold. The average cooling rate was 500 K min-1. Structural analysis revealed the presence of zinc concentration gradients and a strong zinc super-saturation in the alfa-Mg phase. In the Mg-4Zn and Mg-6Zn alloys, an inter-dendritic MgZn phase was present. The alloys' Vickers hardness increased with increasing Zn-concentration from 25 HV10 (pure Mg) to 45 HV10 (Mg-6Zn). The corrosion rates were measured by exposure to simulated body fluid. The Mg-1Zn alloy showed the lowest corrosion rate of 0.08 mm/yr, which was significantly lower than the corrosion rates of pure Mg and AZ91HP alloys (0.5 and 0.6 mm/yr, respectively).Increasing the Zn concentration in Mg alloys increased the corrosion rate, and the as-cast Mg-6Zn alloy corroded quickly, at a rate of 3 mm/yr. The alloys were solution heat treated at 300 °C for 150 h. Structural analysis revealed a part

Název v anglickém jazyce

Structural and corrosion characterization of biodegradable Mg-Zn alloy castings

Popis výsledku anglicky

As-cast Mg, Mg-1Zn, Mg-4Zn and Mg-6Zn (wt.%) alloys were studied in this work. The alloys were prepared by gravity casting into a metal mold. The average cooling rate was 500 K min-1. Structural analysis revealed the presence of zinc concentration gradients and a strong zinc super-saturation in the alfa-Mg phase. In the Mg-4Zn and Mg-6Zn alloys, an inter-dendritic MgZn phase was present. The alloys' Vickers hardness increased with increasing Zn-concentration from 25 HV10 (pure Mg) to 45 HV10 (Mg-6Zn). The corrosion rates were measured by exposure to simulated body fluid. The Mg-1Zn alloy showed the lowest corrosion rate of 0.08 mm/yr, which was significantly lower than the corrosion rates of pure Mg and AZ91HP alloys (0.5 and 0.6 mm/yr, respectively).Increasing the Zn concentration in Mg alloys increased the corrosion rate, and the as-cast Mg-6Zn alloy corroded quickly, at a rate of 3 mm/yr. The alloys were solution heat treated at 300 °C for 150 h. Structural analysis revealed a part

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

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

2012

Kód důvěrnosti údajů

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

Název periodika

Kovové Materiály-Metallic Materials

ISSN

0023-432X

e-ISSN

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Svazek periodika

50

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

10

Strana od-do

415-424

Kód UT WoS článku

000313460300007

EID výsledku v databázi Scopus

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