Role of cobalt additive on formation and anticorrosion properties of PEO coatings on AA2024 alloy in alkali-silicate electrolyte

The plasma electrolytic oxidation (PEO) process was used to form an oxide layer on an Al5754 aluminum alloy for subsequent application of organic coating. The effect of the oxidation time on the morphology and anticorrosion properties of PEO-coatings was investigated. The oxide layer possess low apparent porosity and provides high adhesion to the paint. The resulting composite coating (CC) is characterized by high barrier properties in chloride solution.

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Role of PEO coatings in long-term biodegradation of a Mg alloy

Applied Surface Science ◽

10.1016/j.apsusc.2016.08.005 ◽

2016 ◽

Vol 389 ◽

pp. 810-823 ◽

Cited By ~ 27

Author(s):

E. Matykina ◽

I. Garcia ◽

R. Arrabal ◽

M. Mohedano ◽

B. Mingo ◽

...

Keyword(s):

Mg Alloy ◽

Peo Coatings

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Morphological Features and Electrochemical Properties of the Hydrophobized Sealed PEO-Coatings on Al Alloy

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.245.137 ◽

2015 ◽

Vol 245 ◽

pp. 137-143

Author(s):

Vladimir Egorkin ◽

Igor Vyaliy ◽

Alexander Minaev ◽

Sergey Sinebryukhov ◽

Sergey Gnedenkov

Keyword(s):

Additional Treatment ◽

Ethanol Solution ◽

Al Alloy ◽

Bidistilled Water ◽

Composite Layers ◽

Electrolytic Oxidation ◽

Hydrophobic Agent ◽

Plasma Electrolytic ◽

Peo Coatings ◽

Anticorrosion Properties

The developed methods of formation and results of the study of the hydrophobic layers on aluminum alloy, previously subjected to plasma electrolytic oxidation (PEO), boiling in bidistilled water, and additional treatment (either in ethanol solution or under UV-radiation in the presence of ozone plasma) with subsequent deposition of the hydrophobic agent (methoxy-{3-[(2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluoroctyl) oxy] propyl}-silane solution in decane) have been described. It was found, that the formed composite layers possess hydrophobicity (contact angle higher 155o) and high anticorrosion properties (the impedance modulus (|Z|f = 0.01 Hz) ranges from 1.5·108 to 1.7·108 Оhm·cm2 depending on treatment procedure).

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Active protective PEO coatings on AA2024: Role of voltage on in-situ LDH growth

Materials & Design ◽

10.1016/j.matdes.2017.01.097 ◽

2017 ◽

Vol 120 ◽

pp. 36-46 ◽

Cited By ~ 51

Author(s):

M. Mohedano ◽

M. Serdechnova ◽

M. Starykevich ◽

S. Karpushenkov ◽

A.C. Bouali ◽

...

Keyword(s):

Peo Coatings

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Evaluation of Electrochemical Properties of the PEO-Coatings Treated with Hydrophobic Agent Solution on Aluminium Alloy

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.245.116 ◽

2015 ◽

Vol 245 ◽

pp. 116-120 ◽

Cited By ~ 1

Author(s):

Vladimir Egorkin ◽

Igor Vyaliy ◽

Sergey Sinebryukhov ◽

Sergey Gnedenkov

Keyword(s):

Additional Treatment ◽

Ethanol Solution ◽

Treatment Procedure ◽

Composite Layers ◽

Electrolytic Oxidation ◽

Hydrophobic Agent ◽

Plasma Electrolytic ◽

Peo Coatings ◽

Silane Solution ◽

Anticorrosion Properties

The developed methods of formation and results of the study of the hydrophobic layers on aluminum alloy, previously subjected to plasma electrolytic oxidation (PEO) and additional treatment (either in ethanol solution or under UV-radiation in the presence of ozone plasma) with subsequent deposition of the hydrophobic agent (methoxy-{3-[(2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluoroctyl) oxy] propyl}-silane solution in decane) have been described. It was found, that the formed composite layers possess a hydrophobicity (contact angle higher 157o) and high anticorrosion properties (the impedance modulus, |Z|f=0.01Hz, ranges from 9.2·109 to 4.0·1010 Оhm·cm2 depending on the treatment procedure).

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