Covalent surface modification of LY12 aluminum alloy surface by self-assembly dodecyl phosphate film towards corrosion protection

2020 ◽  
Vol 143 ◽  
pp. 105638 ◽  
Author(s):  
Da-Hai Xia ◽  
Chengcheng Pan ◽  
Zhenbo Qin ◽  
Baomin Fan ◽  
Shizhe Song ◽  
...  
Keyword(s):  
Surface Modification ◽  
Aluminum Alloy ◽  
Corrosion Protection ◽  
Self Assembly ◽  
Alloy Surface ◽  
Aluminum Alloy Surface ◽  
Phosphate Film

scholarly journals Corrosion protection in sulfate medium by self-assemb films adsorbed on AA 2024 T3 aluminum alloy surface

2015 ◽  
Vol 20 (2) ◽  
pp. 420-435
Author(s):  
Aline Viomar ◽  
Maysa Terada ◽  
Isolda Costa ◽  
Paulo Rogério Pinto Rodrigues ◽  
Claudia Schlindwein ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Protection ◽  
Alloy Surface ◽  
Aa 2024 ◽  
Sulfate Medium ◽  
Aluminum Alloy Surface

The protection of TDPA deposited from mixed solutions with different water/ethanol ratios for aluminum alloy against corrosion in NaCl solution

2017 ◽  
Vol 64 (2) ◽  
pp. 233-240 ◽  
Author(s):  
Qu Jun-e ◽  
Chen Geng ◽  
Wang Hai-ren ◽  
Cao Zhi-yong
Keyword(s):  
Aluminum Alloy ◽  
Water Content ◽  
Corrosion Protection ◽  
Corrosion Inhibition ◽  
Adsorption Behavior ◽  
Alloy Surface ◽  
Nacl Solution ◽  
2024 Aluminum Alloy ◽  
Content Type ◽  
Aluminum Alloy Surface

Purpose The purpose of this paper is to investigate the effect of water content of assembly solution on the adsorption behavior and corrosion protection performance of 1–tetradecylphosphonic acid [TDPA, CH3(CH2)13P(O)(OH)2] films on aluminum alloy surface in NaCl solution. Design/methodology/approach Self-assembled monolayers (SAMs) of TDPA were prepared on the 2024 aluminum alloy surface in TDPA containing ethanol-water solutions with different water contents. The adsorption behavior of the SAMs on the alloy surface and their corrosion protection properties in a 3.5 per cent NaCl solution were characterized by potentiodynamic polarization scan, Fourier-transformed infrared spectroscopy (FTIR) and atomic force microscopy (AFM). Findings The FTIR results demonstrated that the TDPA molecules were successfully adsorbed on the 2024 aluminum alloy surface, and the density of the SAMs increased with the increasing water content in the assembly solution. The electrochemical studies and corrosion morphologies observed by AFM showed that the optimal condition is 2 h of assembling in solution B or solution C. The corrosion inhibition efficiency values follow the order solution B ≈ solution C > solution A at the first 2 h assembly and solution B > solution C > solution A while the assembly time exceeded 2 h. The dependence of corrosion inhibition performance of the SAM on the water content and on the assembly time is related to the balancing of competition between TDPA adsorption and dissolution of the alloy oxidation film. Originality/value It illustrates potential application prospects of TDPA for surface treatment of aluminum alloy. Via the comparison with our previous work, this paper provides useful information regarding the difference of corrosion inhibition properties of organic phosphonic acid for aluminum alloy between in neutral and in acid solution.

scholarly journals Fabrication of Superhydrophobic AA5052 Aluminum Alloy Surface with Improved Corrosion Resistance and Self Cleaning Property

Coatings ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 390 ◽  
Author(s):  
Qian Zhao ◽  
Tiantian Tang ◽  
Fang Wang
Keyword(s):  
Contact Angle ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Materials Science ◽  
Composite Coatings ◽  
Alloy Surface ◽  
Corrosion Resistant ◽  
Self Cleaning ◽  
Aa5052 Aluminum Alloy ◽  
Aluminum Alloy Surface

The development of a self-cleaning and corrosion resistant superhydrophobic coating for aluminum alloy surfaces that is durable in aggressive conditions has attracted great interest in materials science. In the present study, a superphydrophobic film was fabricated on an AA5052 aluminum alloy surface by the electrodeposition of Ni–Co alloy coating, followed by modification with 6-(N-allyl-1,1,2,2-tetrahydro-perfluorodecyl) amino-1,3,5-triazine-2,4-dithiol monosodium (AF17N). The surface morphology and characteristics of the composite coatings were investigated by means of scanning electron microscopy (SEM), energy dispersive X-ray spectrum (EDS), atomic force microscope (AFM) and contact angle (CA). The corrosion resistance of the coatings was assessed by electrochemical tests. The results showed that the surface exhibited excellent superhydrophobicity and self-cleaning performance with a contact angle maintained at 160° after exposed to the atmosphere for 240 days. Moreover, the superhydrophobic coatings significantly improved the corrosion resistant performance of AA5052 aluminum alloy substrate in 3.5 wt.% NaCl solution.

WC Nano-Particle Implanting Strengthening on Aluminum Alloy Surface Via Laser Shock Peening

2011 ◽  
Vol 38 (12) ◽  
pp. 1203006
Author(s):  
吕亮 Lü Liang ◽  
黄婷 Huang Ting ◽  
钟敏霖 Zhong Minlin
Keyword(s):  
Aluminum Alloy ◽  
Laser Shock Peening ◽  
Alloy Surface ◽  
Nano Particle ◽  
Laser Shock ◽  
Shock Peening ◽  
Aluminum Alloy Surface

scholarly journals Investigation on the Surface Properties of 5A12 Aluminum Alloy after Nd: YAG Laser Cleaning

Coatings ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 578 ◽  
Author(s):  
Guodong Zhu ◽  
Shouren Wang ◽  
Wei Cheng ◽  
Gaoqi Wang ◽  
Wentao Liu ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Laser Cleaning ◽  
Alloy Surface ◽  
Residual Tensile Stress ◽  
Yag Laser ◽  
Diode Pumped ◽  
Aluminum Alloy Surface ◽  
Diode Pumped Nd:Yag Laser

The surface of the aluminum alloy is prone to oxidation, which in turn affects the quality of the weld. The 5A12 aluminum alloy was cleaned by acousto-optic Q-switched diode-pumped Nd:YAG laser and the effects of different laser powers and different cleaning speeds on the surface roughness, microstructure, element content, microhardness, residual stress and corrosion resistance of aluminum alloy were investigated. The results show that when the power is 98W and the cleaning speed is 4.1 mm/s, the effect of Nd: YAG laser on the removal of oxide film on 5A12 aluminum alloy surface is the most effective. After laser cleaning, the smoothness and strength of aluminum alloy surface can be effectively improved. However, as a major element in 5A12 aluminum alloy, the content of magnesium decreased. At the same time, the residual tensile stress was generated on the surface of the aluminum alloy after cleaning, and the corrosion resistance slightly decreased.

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