Nanostructured surface pre-treatment based on self-assembled molecules for corrosion protection of Alclad 7475-T761 aluminum alloy

The protective performances of coating formed by organo-silane with a linear alkyl chain for promoting aluminum alloy corrosion protection were evaluated by electrochemical techniques. The coatings were self-assembled in the hydrolyzed hydroalcoholic bath ofn-octyltriethoxysilane (OS) and cured at hot air oven by different time. The coatings prepared by the less self-assembled number and shorter cured time, were always porous and scarcely protective. On the contrary, those built by the more self-assembled number and the longer cured time had higher coverage on aluminum surface and favorable corrosion resistant property. The best results were obtained whenn-octyltri-ethoxysilane (OS) was hydrolyzed 25 h, self-assembling of OS was conducted for five times and the multi-layers were cured at 120 for 1∼2 hours. In this case, the thicker, high cross-linked and more scarcely defective layer was formed on aluminum alloy surface.

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Layer-by-layer self-assembled polyurea layers onto MAO surface for enhancing corrosion protection to aluminum alloy 6063

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2020.126653 ◽

2021 ◽

Vol 405 ◽

pp. 126653

Author(s):

Qiufeng Mo ◽

Gemei Qin ◽

Kui Ling ◽

Xiaoyu Lv ◽

Nannan Wang ◽

...

Keyword(s):

Aluminum Alloy ◽

Corrosion Protection ◽

Layer By Layer ◽

Self Assembled ◽

Aluminum Alloy 6063

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Atomistic simulation of corrosion protection of Al2Cu aluminum alloy by 8-hydroxyquinoline

Applied Surface Science ◽

10.1016/j.apsusc.2020.148315 ◽

2021 ◽

Vol 540 ◽

pp. 148315

Author(s):

Junhua You ◽

Ziyu Liu

Keyword(s):

Aluminum Alloy ◽

Corrosion Protection ◽

Atomistic Simulation

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The electrochemical synthesis of poly(pyrrole-co-o-anisidine) on 3102 aluminum alloy and its corrosion protection properties

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2010.09.076 ◽

2011 ◽

Vol 125 (3) ◽

pp. 370-376 ◽

Cited By ~ 28

Author(s):

B. Doğru Mert ◽

B. Yazıcı

Keyword(s):

Aluminum Alloy ◽

Corrosion Protection ◽

Electrochemical Synthesis

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Controlled release and corrosion protection by self-assembled colloidal particles electrodeposited onto magnesium alloys

Journal of Materials Chemistry B ◽

10.1039/c4tb01683a ◽

2015 ◽

Vol 3 (8) ◽

pp. 1667-1676 ◽

Cited By ~ 17

Author(s):

Jiadi Sun ◽

Ye Zhu ◽

Long Meng ◽

Wei Wei ◽

Yang Li ◽

...

Keyword(s):

Corrosion Resistance ◽

Magnesium Alloy ◽

Controlled Release ◽

Magnesium Alloys ◽

Corrosion Protection ◽

Colloidal Particles ◽

Self Assembled ◽

Bioactive Agents

Self-assembled nanoparticles loaded with bioactive agents were electrodeposited to provide the magnesium alloy with controlled release and corrosion resistance properties.

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Influence of the thickness and roughness of polyaniline coatings on corrosion protection of AA7075 aluminum alloy

Electrochimica Acta ◽

10.1016/j.electacta.2017.04.083 ◽

2017 ◽

Vol 240 ◽

pp. 215-224 ◽

Cited By ~ 64

Author(s):

Rafael Marinho Bandeira ◽

Julia van Drunen ◽

Amanda Cristina Garcia ◽

Germano Tremiliosi-Filho

Keyword(s):

Aluminum Alloy ◽

Corrosion Protection

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Plasma Surface Treatment: Effects on Mechanical and Corrosion Protection Properties of Hybrid Sol–Gel Coatings

Encyclopedia of Aluminum and Its Alloys ◽

10.1201/9781351045636-140000211 ◽

2019 ◽

Author(s):

R. Subasri

Keyword(s):

Mechanical Properties ◽

Corrosion Resistance ◽

Surface Treatment ◽

Corrosion Protection ◽

Sol Gel ◽

Surface Cleaning ◽

Al Alloys ◽

Plasma Surface ◽

Wet Chemical ◽

Pre Treatment

Surface cleaning and activation of substrates are two critical processes that affect the mechanical and corrosion resistance properties of protective coatings when deposited on the substrates. Surface cleaning removes the contaminants, for example, grease on the substrate, and surface activation introduces active bonds on the substrate thereby increasing the surface free energy. Conventionally, surface cleaning and activation of aluminum and its alloys are carried out by a wet chemical technique. A convenient and safe alternate to the wet chemical cleaning/activation would be to use plasma for the same purpose. Plasma surface pre-treatment greatly improves adhesion of coatings deposited, which is very vital for good corrosion protection and mechanical properties such as scratch and abrasion resistance. Cold and atmospheric air plasma treatments have been the most widely studied pre-treatments for Al alloys. This article will discuss the advancements in the use of plasma treatment on Al/Al alloys and its effect on corrosion resistance and mechanical properties of coatings deposited after the surface treatment.

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