A transition from petal-state to lotus-state in AZ91 magnesium surface by tailoring the microstructure

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F20%3A00116372" target="_blank" >RIV/00216224:14310/20:00116372 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.surfcoat.2019.125239" target="_blank" >https://doi.org/10.1016/j.surfcoat.2019.125239</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfcoat.2019.125239" target="_blank" >10.1016/j.surfcoat.2019.125239</a>

Result language

angličtina

Original language name

A transition from petal-state to lotus-state in AZ91 magnesium surface by tailoring the microstructure

Original language description

This study explores the microstructural tuning of the AZ91 magnesium alloy subjecting to different heat-treatment procedures to produce the superhydrophobic surface with different adhesive properties. In this regard, a two-step chemical etching process was used to form hierarchical nano/microstructure, during which various phases were corroded with different rates. The surface morphology of samples was characterized using fieldemission scanning electron microscopy (FE-SEM) equipped with energy dispersive spectroscopy (EDS) and confocal laser microscopy (CLSM). In addition, the power spectral density (PSD) analysis was employed to evaluate the nano-scale and micro-scale components of the surfaces. The results revealed that the preferential dissolution of the matrix in favor of primary precipitates during etching treatment formed a hierarchical nano/microstructure on the surface of as-cast AZ91 sample and provided petal-type superhydrophobicity. Employing a combination of annealing and aging treatments resulted in a transition from petal to lotus-type superhydrophobicity by redistributing of the beta-precipitates in the alpha-Mg matrix. The mechanism of this transition was discussed in detail, and a direct correlation between the microstructure and the wettability behaviors of AZ91 Mg alloy was established.

Czech name

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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

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OECD FORD branch

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

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

Surface and Coatings Technology

ISSN

0257-8972

e-ISSN

—

Volume of the periodical

383

Issue of the periodical within the volume

FEB 15 2020

Country of publishing house

CH - SWITZERLAND

Number of pages

10

Pages from-to

1-10

UT code for WoS article

000509617000017

EID of the result in the Scopus database

2-s2.0-85076593029