Effect of Current Density on Characteristics of 2024 Aluminum Alloy Microarc Oxidation Coatings with Titanium Dioxide Particles

Wang, Ping

doi:10.20964/2019.05.30

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…The corrosion resistance performance is closely associated with process parameters and electrolyte composition. Tran et al achieved rapid growth of the micro-arc oxidation layer and improved corrosion resistance and hardness by adding ammonia to the sodium silicate electrolyte solution [12], while Wang et al adjusted the electrical parameters to obtain a coating with improved corrosion resistance [13]. The dense ceramic coatings exhibit excellent corrosion properties [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Adhesion Strength and Anti-Corrosion Performance of Ceramic Coating on Laser-Textured Aluminum Alloy

Fan,

Wang,

Yin

et al. 2023

Coatings

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Laser surface texturing and micro-arc oxidation provide excellent approaches to enhance the adhesion strength and anti-corrosion performance of adhesive bonding interfaces in aluminum alloys, which can be applied in the field of automotive light weighting. Herein, micro-arc oxidation coatings were fabricated on the laser-textured aluminum surface under the voltage of 500 V for various treatment times (5 min, 15 min, 30 min, 60 min). The anti-corrosion performance of ceramic coatings on the laser-textured surface was analyzed using electrochemical measurements. The results of electrochemical measurement indicate that the coating on the sample surface presents two time constants corresponding to a dual-layer structure. The sample grown under 500 V for 60 min exhibits excellent protective performance with a value of 1.3 × 107 ohm·cm2. The adhesion strength of laser-textured ceramic coating is improved compared with the as-received substrate. The sample treated with 500 V for 30 min exhibits the highest bonding strength with a value of 52 MPa. The wider pores and bulges for the sample grown in 60 min would introduce microcracks and consequently reduce the adhesion strength.

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Section: Introductionmentioning

confidence: 99%

Adhesion Strength and Anti-Corrosion Performance of Ceramic Coating on Laser-Textured Aluminum Alloy

Fan,

Wang,

Yin

et al. 2023

Coatings

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The incorporation of particles suspended in the electrolyte into plasma electrolytic oxidation coatings on Ti and Al substrates

Ohara

Troughton

Francis

et al. 2020

Surface and Coatings Technology

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Corrosion behavior of the pre-heated friction stir welded AA2024 alloy reinforced with AA7075 in 3.5% NaCl solution

Abdelfatah¹

2021

International Journal of Electrochemical Science

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The corrosion resistance of friction stir welded (FSW) AA2024 base material (BM) reinforced with different AA7075 weld material (WM) with different width namely 1.0, 1.5, 2.0, 2.5, and 3.0 mm as a compensation layer were studied. The effect of pre-weld heat treatment on the corrosion resistance of BM, WM, and heat affected zone (HAZ) were investigated. Both AA2024 and AA7075 alloys were preweld treated under different heat treatment conditions, the first condition was annealed (O), while the second condition was solution heat treated followed by artificial aging (T6). The welded samples were examined for corrosion resistance using potentiodynamic measurements in 3.5% NaCl solution for the two heat treatment conditions (O and T6). Then, the corroded zones for the two conditions after welding were examined using scanning electron microscopy (SEM), energy dispersion x-ray analysis (EDAX), and mapping of the elemental distribution. It was found that WM-T6 has a higher corrosion rate than WM-O with a uniform corrosion, localized pitting and local galvanic cells formation. After welding, both alloys were highly susceptible to corrosion, and AA2024 alloy had higher susceptibility to corrosion than AA7075 alloy.

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Effect of Current Density on Characteristics of 2024 Aluminum Alloy Microarc Oxidation Coatings with Titanium Dioxide Particles

Cited by 3 publications

References 20 publications

Adhesion Strength and Anti-Corrosion Performance of Ceramic Coating on Laser-Textured Aluminum Alloy

Adhesion Strength and Anti-Corrosion Performance of Ceramic Coating on Laser-Textured Aluminum Alloy

The incorporation of particles suspended in the electrolyte into plasma electrolytic oxidation coatings on Ti and Al substrates

Corrosion behavior of the pre-heated friction stir welded AA2024 alloy reinforced with AA7075 in 3.5% NaCl solution

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