Characteristics of magnesium phosphate coatings formed on AZ31 Mg alloy by plasma electrolytic oxidation with improved current efficiency

Anawati Anawati; Efrina Hidayati; Hasna Labibah

doi:10.1016/j.mseb.2021.115354

Characteristics of magnesium phosphate coatings formed on AZ31 Mg alloy by plasma electrolytic oxidation with improved current efficiency

Anawati Anawati, Efrina Hidayati, Hasna Labibah

Department of Physics

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

A combination of short processing time and high current density is proposed to enhance the current efficiency of the plasma electrolytic oxidation (PEO) process. Magnesium phosphate coating was synthesized on AZ31 Mg alloy using the PEO method for 3 min at a current density of 600, 800, and 1000 A.m⁻². The current efficiency was predicted by the mass gain. The hardness and corrosion behavior were investigated by micro-Vickers hardness and electrochemical measurements, respectively. The resulting magnesium phosphate coatings enhanced the specimen hardness five times and improved the corrosion resistance by two orders of magnitude. The efficiency of the PEO process was relatively high in the range 21.3–53.3%. The highest efficiency was attained at 800 A.m⁻², where an intense micro-arc dominated the PEO process over initial sparking and post arcing. The proposed parameter proved to be beneficial in improving the efficiency of the PEO process.

Original language	English
Article number	115354
Journal	Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume	272
DOIs	https://doi.org/10.1016/j.mseb.2021.115354
Publication status	Published - Oct 2021

Keywords

EIS
High current density
Magnesium
Plasma electrolytic oxidation
Polarization
SEM

Access to Document

10.1016/j.mseb.2021.115354

Cite this

@article{b29f617e31a240d69a4cfb52f595eaf8,

title = "Characteristics of magnesium phosphate coatings formed on AZ31 Mg alloy by plasma electrolytic oxidation with improved current efficiency",

abstract = "A combination of short processing time and high current density is proposed to enhance the current efficiency of the plasma electrolytic oxidation (PEO) process. Magnesium phosphate coating was synthesized on AZ31 Mg alloy using the PEO method for 3 min at a current density of 600, 800, and 1000 A.m−2. The current efficiency was predicted by the mass gain. The hardness and corrosion behavior were investigated by micro-Vickers hardness and electrochemical measurements, respectively. The resulting magnesium phosphate coatings enhanced the specimen hardness five times and improved the corrosion resistance by two orders of magnitude. The efficiency of the PEO process was relatively high in the range 21.3–53.3%. The highest efficiency was attained at 800 A.m−2, where an intense micro-arc dominated the PEO process over initial sparking and post arcing. The proposed parameter proved to be beneficial in improving the efficiency of the PEO process.",

keywords = "EIS, High current density, Magnesium, Plasma electrolytic oxidation, Polarization, SEM",

author = "Anawati Anawati and Efrina Hidayati and Hasna Labibah",

note = "Funding Information: This work was financed by Hibah Q1Q2 from Direktorat Riset dan Pengabdian Masyarakat Universitas Indonesia (DRPM-UI) (NKB-0266/UN2.R3.1/HKP.05.00/2019). Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = oct,

doi = "10.1016/j.mseb.2021.115354",

language = "English",

volume = "272",

journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",

issn = "0921-5107",

publisher = "Elsevier Ltd",

}

Characteristics of magnesium phosphate coatings formed on AZ31 Mg alloy by plasma electrolytic oxidation with improved current efficiency. / Anawati, Anawati; Hidayati, Efrina; Labibah, Hasna.
In: Materials Science and Engineering B: Solid-State Materials for Advanced Technology, Vol. 272, 115354, 10.2021.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Characteristics of magnesium phosphate coatings formed on AZ31 Mg alloy by plasma electrolytic oxidation with improved current efficiency

AU - Anawati, Anawati

AU - Hidayati, Efrina

AU - Labibah, Hasna

N1 - Funding Information: This work was financed by Hibah Q1Q2 from Direktorat Riset dan Pengabdian Masyarakat Universitas Indonesia (DRPM-UI) (NKB-0266/UN2.R3.1/HKP.05.00/2019). Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/10

Y1 - 2021/10

N2 - A combination of short processing time and high current density is proposed to enhance the current efficiency of the plasma electrolytic oxidation (PEO) process. Magnesium phosphate coating was synthesized on AZ31 Mg alloy using the PEO method for 3 min at a current density of 600, 800, and 1000 A.m−2. The current efficiency was predicted by the mass gain. The hardness and corrosion behavior were investigated by micro-Vickers hardness and electrochemical measurements, respectively. The resulting magnesium phosphate coatings enhanced the specimen hardness five times and improved the corrosion resistance by two orders of magnitude. The efficiency of the PEO process was relatively high in the range 21.3–53.3%. The highest efficiency was attained at 800 A.m−2, where an intense micro-arc dominated the PEO process over initial sparking and post arcing. The proposed parameter proved to be beneficial in improving the efficiency of the PEO process.

AB - A combination of short processing time and high current density is proposed to enhance the current efficiency of the plasma electrolytic oxidation (PEO) process. Magnesium phosphate coating was synthesized on AZ31 Mg alloy using the PEO method for 3 min at a current density of 600, 800, and 1000 A.m−2. The current efficiency was predicted by the mass gain. The hardness and corrosion behavior were investigated by micro-Vickers hardness and electrochemical measurements, respectively. The resulting magnesium phosphate coatings enhanced the specimen hardness five times and improved the corrosion resistance by two orders of magnitude. The efficiency of the PEO process was relatively high in the range 21.3–53.3%. The highest efficiency was attained at 800 A.m−2, where an intense micro-arc dominated the PEO process over initial sparking and post arcing. The proposed parameter proved to be beneficial in improving the efficiency of the PEO process.

KW - EIS

KW - High current density

KW - Magnesium

KW - Plasma electrolytic oxidation

KW - Polarization

KW - SEM

UR - http://www.scopus.com/inward/record.url?scp=85109212944&partnerID=8YFLogxK

U2 - 10.1016/j.mseb.2021.115354

DO - 10.1016/j.mseb.2021.115354

M3 - Article

AN - SCOPUS:85109212944

SN - 0921-5107

VL - 272

JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

M1 - 115354

ER -

Characteristics of magnesium phosphate coatings formed on AZ31 Mg alloy by plasma electrolytic oxidation with improved current efficiency

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this