PEO Processing of AZ91Nd/Al2O3 MMC-the Role of Alumina Fibers | Sciact - CRIS-system of Boreskov Institute of Catalysis

PEO Processing of AZ91Nd/Al2O3 MMC-the Role of Alumina Fibers Full article

Journal

Journal of Magnesium and Alloys
ISSN: 2213-9567

Output data

Year: 2022, Volume: 10, Number: 2, Pages: 423-439 Pages count : 17 DOI: 10.1016/j.jma.2021.09.017

Tags

Plasma electrolytic oxidation; Mg alloy; Metal matrix composite; Al2O3; MgAl2O4

Authors

Wu Ting ¹ , Blawert Carsten ¹ , Serdechnova Maria ¹ , Karlova Polina ¹ , Dovzhenko Gleb ² , Wieland D.C.Florian ³ , Zheludkevich Mikhail L ^1,4

Affiliations

1	Institute of Surface Science, Helmholtz-Zentrum Hereon, Max-Planck Strasse. 1, Geesthacht 21502, Germany
2	Institute of Materials Physics, Helmholtz-Zentrum Hereon, Max-Planck Strasse. 1, Geesthacht 21502, Germany
3	Institute of Metallic Biomaterials, Helmholtz-Zentrum Hereon, Max-Planck Strasse. 1, Geesthacht 21502, Germany
4	Faculty of Engineering, Institute of Materials Science, Kiel University, Kaiserstrasse 2, Kiel 24143, Germany

This work reports the influence of alumina fiber reinforcement of an AZ91Nd MMC (metal matrix composite) on the PEO coating formation process in a sodium phosphate-based electrolyte. By comparison with the pure AZ91Nd, the evolution of alumina fiber during the processing and the characteristics of the resultant PEO coating were investigated. The voltage response as a function of processing time was changed. Lower voltage in the presence of alumina fiber is responsible for the lower coating thickness. The morphology and phase composition of the coatings are also influenced by the incorporation of the fiber. Firstly, the fiber is embedded in the coating and interrupts the continuity of the coating. With increasing processing time, the fiber is found to be reactively incorporated in the coating. The intention to produce a MgAl2O4 containing coating is achieved and it is mainly accumulated near the coating surface. However, due to the low number of fibers, the Al content is overall still low and only near to the fibers the MgAl2O4 spinel phase can form

Wu T. , Blawert C. , Serdechnova M. , Karlova P. , Dovzhenko G. , Wieland D.C.F. , Zheludkevich M.L.
PEO Processing of AZ91Nd/Al2O3 MMC-the Role of Alumina Fibers
Journal of Magnesium and Alloys. 2022. V.10. N2. P.423-439. DOI: 10.1016/j.jma.2021.09.017 WOS Scopus РИНЦ AN OpenAlex

Submitted:	May 5, 2021
Accepted:	Sep 22, 2021
Published online:	Dec 5, 2021
Published print:	Feb 1, 2022

Web of science:	WOS:000785648800007
Scopus:	2-s2.0-85120862998
Elibrary:	47843263
Chemical Abstracts:	2021:2628660
OpenAlex:	W4200293512

DB	Citing
Scopus	19
Web of science	13
OpenAlex	18