Electrochemical Pourbaix diagrams of Mg-Zn alloys from first-principles calculations and experimental thermodynamic data

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F21%3A10248141" target="_blank" >RIV/61989100:27640/21:10248141 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27740/21:10248141

Result on the web

<a href="https://pubs.rsc.org/en/content/articlelanding/2021/CP/D1CP02754A" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2021/CP/D1CP02754A</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d1cp02754a" target="_blank" >10.1039/d1cp02754a</a>

Result language

angličtina

Original language name

Electrochemical Pourbaix diagrams of Mg-Zn alloys from first-principles calculations and experimental thermodynamic data

Original language description

Mg-Zn alloys have attracted much attention as biodegradable alloys owing to their superior mechanical properties and excellent biocompatibility. However, their corrosion/degradation behaviour has become a major issue for various biomedical applications. To understand their corrosion behaviours in aqueous environments, the first-principles informed Pourbaix diagrams, that is, electrochemical phase diagrams with respect to electrode potential and solution pH, were constructed for Mg-Zn alloys and compared with experimental observations. It was found that for Mg-rich alloys, the MgZn phase has a higher potential than the Mg matrix and may act as a cathode, resulting in galvanic corrosion, while for Zn-rich alloys, the phase Mg2Zn11 corrodes first. In Zn-rich alloys, Mg(OH)(2) preferably precipitates under alkaline conditions, thus hindering the increase in pH and preventing the release of dissolved ZnO22- ions. In a Cl-containing solution, the soluble ZnCl2 eases the corrosion of the Zn matrix by decreasing the corrosion potential. These results are supported by various experimental observations; thus, they provide an in-depth understanding of the degradation behaviour of various Mg-Zn alloys as well as a feasible pathway in the design of biocompatible Mg-Zn alloys with first-principles informed Pourbaix diagrams.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

<a href="/en/project/EF16_013%2F0001791" target="_blank" >EF16_013/0001791: IT4Innovations national supercomputing center - path to exascale</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Name of the periodical

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

—

Volume of the periodical

23

Issue of the periodical within the volume

35

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

19602-19610

UT code for WoS article

000689016000001

EID of the result in the Scopus database

2-s2.0-85115197718