Corrosion protection ability of Al2O3 coatings deposited with ion beam assisted deposition

Emmerich, R.; Enders, B.; Martin, H.; Stippich, F.; Wolf, Gerhard; Andersen, P.E.; Küdelha, J.; Lukáč, P.; Hasuyama, H.; Shima, Y.

doi:10.1016/s0257-8972(96)02901-5

Cited by 25 publications

(8 citation statements)

References 13 publications

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“…In the past decades, various traditional surface treatments, such as physical vapor deposition [1][2], chemical vapor deposition [3], ion beam assisted deposition [4] and spraying [5], have been applied to metallic substrates to improve their generally poor tribological properties. However, most of the aforementioned methods involve high processing temperature, which may degrade the coatings and/or substrates.…”

Section: Introductionmentioning

confidence: 99%

Plasma Electrolytic Oxidation Coatings on Lightweight Metals

Li¹,

Liang²,

Wang³

2013

Modern Surface Engineering Treatments

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Section: Introductionmentioning

confidence: 99%

Plasma Electrolytic Oxidation Coatings on Lightweight Metals

Li¹,

Liang²,

Wang³

2013

Modern Surface Engineering Treatments

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“…On the other hand, their disadvantages are low wear resistance, low hardness and hard to lubricate, hence they have limited usage area [1]. Some surface treatment methods have applied on aluminium alloys for improving their mechanical and tribological properties [2][3][4][5]. One of these surface treatment methods is MAO that forms thick and hard alumina coating having high wear resistance, thermal resistance and corrosion resistance [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Investigation of High Energy Single Pulse Effect on Micro Arc Oxidation (MAO) Process on Aluminium

Yılmaz¹,

Şahin²

2019

IJMMME

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Micro Arc Oxidation (MAO) was applied by using high-energy anodic/cathodic pulses with various pulse durations. Anodic and cathodic pulse couples were kept at a constant voltage of 500 volts. Energy of each pulse increased with increasing duration of pulses. Since the aim of the present study was to investigate effect of pulse durations on MAO processing, other processing parameters such as duty cycle (8%), electrolyte temperature (25±5 °C), electrolyte composition (KOH, Na2SiO3.5H2O), process time (20 minutes), anodic pulse voltage, cathodic pulse voltage and chemical composition of substrate were all kept constant. Five different anodic and cathodic pulse durations were applied. Scanning electron microscope (SEM), indenter, profilometer, eddy current and X-ray diffractometer were employed to investigate the microstructure, hardness, surface roughness, coating thickness and phase distribution of the coatings. Varying of pulse duration occurred significant differences among coating specifications. Coating layers with thickness between 50-90 μm and surface roughness between 3.1-5.2 μm were obtained. The hardness of coating layers was between 800-2000 Vickers. Coatings consist of two sub-layers, inner dense layer and outer porous layer, which were a mixture of γ-Al2O3 and α-Al2O3.

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“…On the other hand, their disadvantages are low wear resistance, low hardness and hard to lubricate, hence they have limited usage area [1]. Some surface treatments have applied on aluminium alloys for improving their mechanical and tribological properties [2][3][4][5].One of the alternative system is Micro-Arc Oxidation which performs thick and hard alumina coatings at bulk material and acquired wear resistance, thermal resistance and corrosion resistance surfaces [6][7][8][9]. The properties of MAO coatings are identified by some parameters, such as electrolyte composition, applied power modes, applied power modes, additives, processing temperature, substrate, processing time, etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the High Energy Single Pulses Affect on Micro Arc Oxidation Process on Aluminium

Yılmaz¹,

Şahin²

2018

World Congress on Mechanical, Chemical, and Material Engineering

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Micro Arc Oxidation (MAO) was applied by using high anodic (500 volt) and high cathodic (500 volt) voltages with increasingly pulse duration couples (anodic and cathodic single pulses). While the increasing pulse duration, the single pulse energy was increased also. Due to the investigation of the single pulse affect, all other parameters were kept constant, such as duty cycle (8%), electrolyte temperature (25±5°C), electrolyte composition (KOH, Na2SiO3.5H2O), process time (20 minutes), anodic voltage, cathodic voltage and substrate. Five different anodic and cathodic pulse durations were applied. Scanning electron microscope (SEM), indenter, profilometer, eddy current, X-ray diffractometer were employed to investigate the microstructure, hardness, surface roughness, coating thickness and phase distribution of the coatings. The pore volume and distribution of the coating layers were analysed. Varying of pulse duration occurred significant differences among coating specifications. Coating layers with thickness between 50-90 μm and surface roughness between 3.1-5.2 μm were obtained. The hardness of coating layers was between 800-2000 Vickers. Coatings consist of two layers, inner dense layer and outer porous layer, which was a mixture of γ-Al2O3 and α-Al2O3.

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Corrosion protection ability of Al2O3 coatings deposited with ion beam assisted deposition

Cited by 25 publications

References 13 publications

Plasma Electrolytic Oxidation Coatings on Lightweight Metals

Plasma Electrolytic Oxidation Coatings on Lightweight Metals

Investigation of High Energy Single Pulse Effect on Micro Arc Oxidation (MAO) Process on Aluminium

Investigation of the High Energy Single Pulses Affect on Micro Arc Oxidation Process on Aluminium

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