Feasibility Study of AlN/Al2O3 Coating on Aluminum Alloy Using Microarc Oxidation Method

In the present study, microarc oxidation (MAO) coatings were formed on ZL101A aluminum alloy in an electrolytic bath containing 3[Formula: see text]g/L KOH [Formula: see text] 2[Formula: see text]g/L Na2WO[Formula: see text] 4[Formula: see text]g/L KF. The morphology and wearing behavior were investigated. In both electrolytes, the additives were borates (Na2B4O718[Formula: see text]g/L) and silicates (Na2SiO3 18[Formula: see text]g/L), respectively. It was found that the coating formed in borates-containing electrolyte was of compact and smooth structure than that of the one formed in silicates-containing electrolyte at the optimum treatment time. It was found that all the coatings were composed of á-Al2O3 and ã-Al2O3. The microhardness and wear tests proved that the coating formed in borates-containing electrolyte was having better mechanical properties than those of the coating formed in silicates-containing electrolyte.

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Feasibility study of hydraulic cylinder subject to high pressure made of aluminum alloy and composite material

Composite Structures ◽

10.1016/j.compstruct.2018.11.021 ◽

2019 ◽

Vol 209 ◽

pp. 739-746 ◽

Cited By ~ 8

Author(s):

Luigi Solazzi

Keyword(s):

High Pressure ◽

Composite Material ◽

Aluminum Alloy ◽

Feasibility Study ◽

Hydraulic Cylinder

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The Infulence of Microarc Oxidation Method Modes on the Properties of Coatings

Journal of Engineering Science and Technology Review ◽

10.25103/jestr.075.19 ◽

2014 ◽

Vol 7 (5) ◽

pp. 70-73 ◽

Cited By ~ 1

Author(s):

N. Y. Dudareva ◽

◽

М. М. Abramova ◽

I. V. Alexandrov ◽

◽

...

Keyword(s):

Microarc Oxidation ◽

Properties Of Coatings ◽

Oxidation Method

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Effect of oxidation time on the microstructure and properties of ceramic coatings prepared by microarc oxidation on 7A04 superhard aluminum alloy

International Journal of Modern Physics B ◽

10.1142/s021797921744026x ◽

2017 ◽

Vol 31 (16-19) ◽

pp. 1744026

Author(s):

Feng Xiao ◽

Hui Chen ◽

Jingguo Miao ◽

Juan Du

Keyword(s):

Aluminum Alloy ◽

Microarc Oxidation ◽

Ceramic Coatings ◽

Ceramic Layer ◽

X Ray Diffraction ◽

Oxidation Treatment ◽

X Ray ◽

Metallurgical Bonding ◽

Dense Ceramic ◽

Morphology Of Surface

Under the sodium aluminates’ system, microarc oxidation treatment was conducted on the superhard aluminum alloy 7A04 for different times. The microstructure of microarc oxidation ceramic layer was investigated by using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The influences of different oxidation times on the adhesion strength of ceramic layer and substrate, the morphology of surface and cross-section, the phase composition and the electrochemical properties were studied. The results indicated that the connection of the coating and substrate appears to be metallurgical bonding and dense ceramic layer, and the surface is in a “volcanic vent” morphology, which is composed of [Formula: see text]-Al2O3 and little [Formula: see text]-Al2O3. The corrosion resistance of ceramic layer is improved significantly in contrast with that of the substrate.

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Tribological Behavior of Microarc Oxidation Coatings on Aluminum Alloy

ISIJ International ◽

10.2355/isijinternational.46.287 ◽

2006 ◽

Vol 46 (2) ◽

pp. 287-291 ◽

Cited By ~ 17

Author(s):

Wenbin Xue ◽

Jiancheng Du ◽

Xiaoling Wu ◽

Yongchun Lai

Keyword(s):

Aluminum Alloy ◽

Tribological Behavior ◽

Microarc Oxidation

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Results of engine tests of an experimental gasoline internal combustion engine

BIO Web of Conferences ◽

10.1051/bioconf/20201700078 ◽

2020 ◽

Vol 17 ◽

pp. 00078

Author(s):

Dmitry Maryin ◽

Andrei Glushchenko ◽

Anton Khokhlov ◽

Evgeny Proshkin ◽

Rail Mustyakimov

Keyword(s):

Internal Combustion Engine ◽

Fuel Consumption ◽

Economic Performance ◽

Combustion Engine ◽

Microarc Oxidation ◽

Internal Combustion ◽

Oxidation Method ◽

Piston Head ◽

Comparative Results ◽

Insulating Properties

To improve the power and fuel and economic performance of a gasoline internal combustion engine, it has been proposed to improve the insulating properties of the piston by forming a heat-insulating coating on the working surfaces of the piston head with a thickness of 25...30 μm using the microarc oxidation method. Comparative results of engine tests are carried out, which showed that an engine equipped with pistons with a heat-insulating coating on the working surfaces of the head increases power by 5.3 % and reduces hourly fuel consumption by 5.7 % compared to an engine equipped with standard pistons.

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Acoustic emission that occurs during the destruction of coatings applied by microarc oxidation on an aluminum alloy

Materials Today Proceedings ◽

10.1016/j.matpr.2019.08.174 ◽

2019 ◽

Vol 19 ◽

pp. 2522-2525

Author(s):

Oleg Bashkov ◽

Xuewei Li ◽

Fengyuan Bao ◽

Vladimir Alekseevich Kim ◽

Changhai Zhou

Keyword(s):

Acoustic Emission ◽

Aluminum Alloy ◽

Microarc Oxidation

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Corrosion tests of oxideceramic coatings formed by microarc oxidation

NOVYE OGNEUPORY (NEW REFRACTORIES) ◽

10.17073/1683-4518-2020-4-51-55 ◽

2020 ◽

pp. 51-55

Author(s):

N. S. Chernyshov ◽

Yu. A. Kuznetsov ◽

M. A. Markov ◽

A. V. Krasikov ◽

A. D. Bykova

Keyword(s):

Corrosion Resistance ◽

Experimental Studies ◽

Microarc Oxidation ◽

Ceramic Coatings ◽

Oxidation Method ◽

Corrosion Tests

The results of experimental studies of the corrosion resistance of aluminum and its alloys modified with ceramic coatings based on the microarc oxidation method in some aggressive environments are presented. The mechanism of destruction of the coating is considered. Recommendations on increasing corrosion resistance are given.

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