Publication detail
Influence of plasma electrolytic oxidation on fatigue performance of AZ61 magnesium alloy
NĚMCOVÁ, A. SKELDON, P. THOMPSON, G. MORSE, S. ČÍŽEK, J. PACAL, B.
Czech title
Vliv plazmatického elektrolytického povlaku na únavovou odolnost hořčíkové slitiny AZ61
English title
Influence of plasma electrolytic oxidation on fatigue performance of AZ61 magnesium alloy
Type
journal article in Web of Science
Language
en
Original abstract
The effect of plasma electrolytic oxidation (PEO) on the fatigue of AZ61 magnesium alloy has been investigated under high cycle conditions in air and 3.5% NaCl solution. PEOemployed an alkaline pyrophosphate-silicate-fluoride electrolyte, with an offset square waveform, a frequency of 50 Hz, and current density of 130 mA cm-2.The PEO treatment led to reductions in the fatigue limit by 38% in air and by 56% in 3.5% NaCl solution. The reduction of the fatigue limit is attributed to cracking of the coating, roughness of the alloy/coating interface, corrosion and influences of Al-Mn particles.
Czech abstract
Vliv povrchového zpracování plazmatickou elektrolytickou oxidací (PEO) na únavové chování protlačované hořčíkové slitiny AZ61 na vzduchu a v prostředí 3,5% roztoku NaCl. Povrchové zpracování probíhalo v elektrolytu na bázi křemičitan-fosforečnanu při použití zdroje střídavého proudu a frekvence 50 Hz a proudové hustoty 130 mA cm–2. Kombinace PEO povlaku s chloridovými ionty způsobila redukci o 56 %. K redukci únavového limitu přispívá praskání povlaku, drsnost na rozharanní slitina/povlak, korozní napadení a vliv Al-Mn fází.
English abstract
The effect of plasma electrolytic oxidation (PEO) on the fatigue of AZ61 magnesium alloy has been investigated under high cycle conditions in air and 3.5% NaCl solution. PEOemployed an alkaline pyrophosphate-silicate-fluoride electrolyte, with an offset square waveform, a frequency of 50 Hz, and current density of 130 mA cm-2.The PEO treatment led to reductions in the fatigue limit by 38% in air and by 56% in 3.5% NaCl solution. The reduction of the fatigue limit is attributed to cracking of the coating, roughness of the alloy/coating interface, corrosion and influences of Al-Mn particles.
Keywords in Czech
hořčík, SEM, korozní únava, oxidické povlaky
Keywords in English
magnesium, SEM, corrosion fatigue, oxide coatings
RIV year
2014
Released
01.05.2014
Publisher
Elsevier
ISSN
0010-938X
Volume
2014
Number
82
Pages from–to
58–66
Pages count
9
BIBTEX
@article{BUT106476,
author="Aneta {Němcová} and Peter {Skeldon} and George {Thompson} and Stuart {Morse} and Jan {Čížek} and Bohumil {Pacal},
title="Influence of plasma electrolytic oxidation on fatigue performance of AZ61 magnesium alloy",
year="2014",
volume="2014",
number="82",
month="May",
pages="58--66",
publisher="Elsevier",
issn="0010-938X"
}