Characteristic of MAO coatings formed on CuAl2 in-situ reinforced aluminum matrix composites

D. I. Mafouz; A. H. Paksoy; F. Muhaffel; O. Tazegul; H. Cimenoglu

doi:10.5604/18972764.1229423

Characteristic of MAO coatings formed on CuAl₂ in-situ reinforced aluminum matrix composites

D. I. Mafouz, A. H. Paksoy, F. Muhaffel, O. Tazegul, H. Cimenoglu^*

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

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

Abstract

Purpose: The aim of this study was to examine the structural and mechanical properties of coatings formed on CuAl₂ in-situ reinforced aluminium matrix composites (AMCs) by micro arc oxidation (MAO) process. AMC, which were fabricated by powder metallurgy method upon addition of copper powder into aluminium powder at different percentages (0%, 15 wt.% and 30 wt.%), were exposed to MAO after sintering at 550°C for 6 h. During sintering process CuAl₂ type intermetallic was precipitated in the microstructure of copper containing compacts. MAO caused covering of the surfaces of AMCs with an oxide layer mostly consisting of mullite and alumina. Mechanical performance of the coatings were determined by hardness measurements and wear tests. In summary, the oxide layers formed on the AMCs exhibit a reduction in hardness and tribological performance with increasing copper content of the AMC.

Original language	English
Pages (from-to)	60-63
Number of pages	4
Journal	Archives of Materials Science and Engineering
Volume	79
Issue number	2
DOIs	https://doi.org/10.5604/18972764.1229423
Publication status	Published - Jun 2016

Bibliographical note

Publisher Copyright:
© by International OCSCO World Press. All rights reserved. 2016.

Keywords

Aluminium matrix composite
Intermetallic
Micro arc oxidation
Mullite
Wear

Access to Document

10.5604/18972764.1229423

Cite this

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title = "Characteristic of MAO coatings formed on CuAl2 in-situ reinforced aluminum matrix composites",

abstract = "Purpose: The aim of this study was to examine the structural and mechanical properties of coatings formed on CuAl2 in-situ reinforced aluminium matrix composites (AMCs) by micro arc oxidation (MAO) process. AMC, which were fabricated by powder metallurgy method upon addition of copper powder into aluminium powder at different percentages (0%, 15 wt.% and 30 wt.%), were exposed to MAO after sintering at 550°C for 6 h. During sintering process CuAl2 type intermetallic was precipitated in the microstructure of copper containing compacts. MAO caused covering of the surfaces of AMCs with an oxide layer mostly consisting of mullite and alumina. Mechanical performance of the coatings were determined by hardness measurements and wear tests. In summary, the oxide layers formed on the AMCs exhibit a reduction in hardness and tribological performance with increasing copper content of the AMC.",

keywords = "Aluminium matrix composite, Intermetallic, Micro arc oxidation, Mullite, Wear",

author = "Mafouz, {D. I.} and Paksoy, {A. H.} and F. Muhaffel and O. Tazegul and H. Cimenoglu",

year = "2016",

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T1 - Characteristic of MAO coatings formed on CuAl2 in-situ reinforced aluminum matrix composites

AU - Mafouz, D. I.

AU - Paksoy, A. H.

AU - Muhaffel, F.

AU - Tazegul, O.

AU - Cimenoglu, H.

PY - 2016/6

Y1 - 2016/6

N2 - Purpose: The aim of this study was to examine the structural and mechanical properties of coatings formed on CuAl2 in-situ reinforced aluminium matrix composites (AMCs) by micro arc oxidation (MAO) process. AMC, which were fabricated by powder metallurgy method upon addition of copper powder into aluminium powder at different percentages (0%, 15 wt.% and 30 wt.%), were exposed to MAO after sintering at 550°C for 6 h. During sintering process CuAl2 type intermetallic was precipitated in the microstructure of copper containing compacts. MAO caused covering of the surfaces of AMCs with an oxide layer mostly consisting of mullite and alumina. Mechanical performance of the coatings were determined by hardness measurements and wear tests. In summary, the oxide layers formed on the AMCs exhibit a reduction in hardness and tribological performance with increasing copper content of the AMC.

AB - Purpose: The aim of this study was to examine the structural and mechanical properties of coatings formed on CuAl2 in-situ reinforced aluminium matrix composites (AMCs) by micro arc oxidation (MAO) process. AMC, which were fabricated by powder metallurgy method upon addition of copper powder into aluminium powder at different percentages (0%, 15 wt.% and 30 wt.%), were exposed to MAO after sintering at 550°C for 6 h. During sintering process CuAl2 type intermetallic was precipitated in the microstructure of copper containing compacts. MAO caused covering of the surfaces of AMCs with an oxide layer mostly consisting of mullite and alumina. Mechanical performance of the coatings were determined by hardness measurements and wear tests. In summary, the oxide layers formed on the AMCs exhibit a reduction in hardness and tribological performance with increasing copper content of the AMC.

KW - Aluminium matrix composite

KW - Intermetallic

KW - Micro arc oxidation

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KW - Wear

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