Tribological Behavior of Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> Composite Ceramic Coating on Al-Zn-Mg-Cu Alloy

Tribological Behavior of Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> Composite Ceramic Coating on Al-Zn-Mg-Cu Alloy

In order to enhance wear properties of Al-Zn-Mg-Cu alloy parts, Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> composite ceramic coatings are formed on Al-Zn-Mg-Cu alloy by the DC micro-arc oxidation (MAO) method in the silicate electrolyt...

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Main Authors: Diping Zeng, Zhiyi Liu, Lihua Zou, Haijiang Wu
Format: Article
Language:English
Published: MDPI AG 2021-07-01
Series:Coatings
Subjects:
micro-arc oxidation
composite ceramic coating
wear property
tribological behavior
Online Access:https://www.mdpi.com/2079-6412/11/8/915
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spelling doaj-54555a348b384f15a1ba51bc16804bd02021-08-26T13:38:40ZengMDPI AGCoatings2079-64122021-07-011191591510.3390/coatings11080915Tribological Behavior of Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> Composite Ceramic Coating on Al-Zn-Mg-Cu AlloyDiping Zeng0Zhiyi Liu1Lihua Zou2Haijiang Wu3Department of Mechanical and Energy Engineering, Shaoyang University, Shaoyang 422000, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaDepartment of Mechanical and Energy Engineering, Shaoyang University, Shaoyang 422000, ChinaDepartment of Mechanical and Energy Engineering, Shaoyang University, Shaoyang 422000, ChinaIn order to enhance wear properties of Al-Zn-Mg-Cu alloy parts, Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> composite ceramic coatings are formed on Al-Zn-Mg-Cu alloy by the DC micro-arc oxidation (MAO) method in the silicate electrolyte with sodium molybdate. Effects of sodium molybdate concentration on the structure characteristics and wear resistance of the composite ceramic coatings are analyzed by scanning electron microscopy, X-ray diffraction and the wear test, respectively. Analyses indicate that the composite coating consists of different states of Al<sub>2</sub>O<sub>3</sub>, MoO<sub>2</sub> and mullite phase. With the addition of molybdate in the electrolyte, the morphology and structure are changed. The tribological behavior is greatly affected by the surface characteristics and hardness of the coatings. The composite coatings formed by adding 3 g/L of sodium molybdate electrolyte have the best wear resistance.https://www.mdpi.com/2079-6412/11/8/915micro-arc oxidationcomposite ceramic coatingwear propertytribological behavior
collection DOAJ
language English
format Article
sources DOAJ
author Diping Zeng
Zhiyi Liu
Lihua Zou
Haijiang Wu
spellingShingle Diping Zeng
Zhiyi Liu
Lihua Zou
Haijiang Wu
Tribological Behavior of Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> Composite Ceramic Coating on Al-Zn-Mg-Cu Alloy
Coatings
micro-arc oxidation
composite ceramic coating
wear property
tribological behavior
author_facet Diping Zeng
Zhiyi Liu
Lihua Zou
Haijiang Wu
author_sort Diping Zeng
title Tribological Behavior of Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> Composite Ceramic Coating on Al-Zn-Mg-Cu Alloy
title_short Tribological Behavior of Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> Composite Ceramic Coating on Al-Zn-Mg-Cu Alloy
title_full Tribological Behavior of Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> Composite Ceramic Coating on Al-Zn-Mg-Cu Alloy
title_fullStr Tribological Behavior of Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> Composite Ceramic Coating on Al-Zn-Mg-Cu Alloy
title_full_unstemmed Tribological Behavior of Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> Composite Ceramic Coating on Al-Zn-Mg-Cu Alloy
title_sort tribological behavior of al<sub>2</sub>o<sub>3</sub>-moo<sub>2</sub>-sio<sub>2</sub> composite ceramic coating on al-zn-mg-cu alloy
publisher MDPI AG
series Coatings
issn 2079-6412
publishDate 2021-07-01
description In order to enhance wear properties of Al-Zn-Mg-Cu alloy parts, Al<sub>2</sub>O<sub>3</sub>-MoO<sub>2</sub>-SiO<sub>2</sub> composite ceramic coatings are formed on Al-Zn-Mg-Cu alloy by the DC micro-arc oxidation (MAO) method in the silicate electrolyte with sodium molybdate. Effects of sodium molybdate concentration on the structure characteristics and wear resistance of the composite ceramic coatings are analyzed by scanning electron microscopy, X-ray diffraction and the wear test, respectively. Analyses indicate that the composite coating consists of different states of Al<sub>2</sub>O<sub>3</sub>, MoO<sub>2</sub> and mullite phase. With the addition of molybdate in the electrolyte, the morphology and structure are changed. The tribological behavior is greatly affected by the surface characteristics and hardness of the coatings. The composite coatings formed by adding 3 g/L of sodium molybdate electrolyte have the best wear resistance.
topic micro-arc oxidation
composite ceramic coating
wear property
tribological behavior
url https://www.mdpi.com/2079-6412/11/8/915
work_keys_str_mv AT dipingzeng tribologicalbehaviorofalsub2subosub3submoosub2subsiosub2subcompositeceramiccoatingonalznmgcualloy
AT zhiyiliu tribologicalbehaviorofalsub2subosub3submoosub2subsiosub2subcompositeceramiccoatingonalznmgcualloy
AT lihuazou tribologicalbehaviorofalsub2subosub3submoosub2subsiosub2subcompositeceramiccoatingonalznmgcualloy
AT haijiangwu tribologicalbehaviorofalsub2subosub3submoosub2subsiosub2subcompositeceramiccoatingonalznmgcualloy
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