Corrosion Behavior and Microstructure of 2024 Aluminum Alloy Sheets by Shot Peen Forming in a Salt Spray Environment

Qiao, Jingzhen; Fu, Xuesong; Gai, Pengtao; Zhou, Wen-long

doi:10.1007/s11665-022-07389-w

Cited by 6 publications

(4 citation statements)

References 36 publications

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“…The corrosion rate can be judged according to the corrosion current density, and the higher the corrosion current density, the higher the corrosion rate [ 14 , 25 , 26 ]. Under the same corrosion potential, the corrosion current density of the extruded 1100 aluminum alloy was higher than that of the homogenized 1100 aluminum alloy, indicating that the corrosion rate of the extruded 1100 aluminum alloy was fast in the middle and late stages of corrosion, which was also the reason for the significant loss of the extruded 1100 aluminum alloy.…”

Section: Resultsmentioning

confidence: 99%

“…Some articles have reported the corrosion of aluminum alloys in salt spray environments. Jing-zhen Qiao et al [ 14 ] studied the corrosion behavior and microstructure of 2024 aluminum alloy sheets after shot peen forming in a salt spray environment. Surendarnath et al [ 15 ] used traditional and new equal-channel angular pressing (ECAP) molds to process commercial pure aluminum, and studied the corrosion of annealed and ECAP-treated samples using the immersion test and salt spray test.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion Behavior of Homogenized and Extruded 1100 Aluminum Alloy in Acidic Salt Spray

Zhao,

Lu,

Wang

et al. 2024

Materials

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The 1100 aluminum alloy has been widely used in many industrial fields due to its high specific strength, fracture toughness, excellent thermal conductivity, and corrosion resistance. In this study, the corrosion behavior of the homogenized and hot-extruded 1100 aluminum alloy in acid salt spray environment for different time was studied. The microstructure of the 1100 aluminum alloy before and after corrosion was characterized by an optical microscope (OM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and a laser scanning confocal microscope (LSCM). The difference in corrosion resistance between the homogenized and extruded 1100 aluminum alloy was analyzed via the electrochemical method. The results indicate that after hot extrusion at 400 °C, the microstructure of the 1100 aluminum alloy changes from an equiaxed crystal structure with (111) preferentially distributed in a fibrous structure with (220) preferentially distributed. There was no obvious dynamic recrystallization occurring during extrusion, and the second-phase particles containing Al-Fe-Si were coarse and unevenly distributed. With the increase in corrosion time, corrosion pits appeared on the surface of the 1100 aluminum alloy, and a corrosion product layer was formed on the surface of the homogenized 1100 aluminum alloy, which reduced the corrosion rate. After 96 h of corrosion, the CPR of the extruded samples was 0.619 mm/a, and that of the homogenized samples was 0.442 mm/a. The corrosion resistance of the extruded 1100 aluminum alloy was affected by the microstructure and the second phase, and no protective layer of corrosion products was formed on the surface, resulting in a faster corrosion rate and deeper corrosion pits.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Homogenized and Extruded 1100 Aluminum Alloy in Acidic Salt Spray

Zhao,

Lu,

Wang

et al. 2024

Materials

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“…In practice, salt-containing water vapor (especially in the marine environment) will cause serious corrosion of the shielding materials, resulting in a decline in the conductivity of the materials(the materials’ conductivity), which then triggers the failure of EMI shielding, thus posing a serious hazard to electronic equipment. Therefore, how to prepare a conductive filler with high salt spray resistance is a key issue that must be faced and solved at present. − …”

Section: Introductionmentioning

confidence: 99%

Preparation of AntiSalt Spray Conductive Silver-Plated Carbon Fiber via Tannic Acid/Metal Ion Complex Inhibitors for Electromagnetic Interference Shielding

Shao,

He,

Chen

et al. 2024

Ind. Eng. Chem. Res.

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Conductive fillers are critical raw materials for many applications. However, vulnerability to salt spray corrosion remains the biggest problem for silver-plated conductive fillers. Herein, highly conductive silver-plated carbon fiber powders (Ag/pCF) were prepared via catechol/polyamine activation and subsequently formed a tannic acid/metal ion (TA@Me) complex inhibition layer. The electromagnetic interference (EMI) shielding effectiveness of the composite fabricated with original Ag/pCF decreased from 106.4 to 90.4 dB after a 4-cycle salt spray corrosion test, while the composites protected by TA@Me remained unchanged above 110 dB. Further research revealed that TA@Me could effectively block the penetration of Cl − , which is the primary corrosive chemical in a salt fog environment. Considering the high conductivity and the excellent antisalt spray performance, the Ag/pCF protected by the efficient TA@Me inhibition layer via an eco-friendly approach will be a priority alternative for high-performance EMIshielding applications.

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“…Today, massive electromagnetic (EM) waves will not only cause harm to the human body but also interfere with the normal operation of electronic equipment. − However, the water vapor at high altitudes and above the sea may cause aircraft and vessels to suffer from the salt fog environment, leading to the failure of EMI shielding materials and posing a great threat to safety. Therefore, EMI shielding materials with high salt spray resistance are still an important research topic at present. − …”

Section: Introductionmentioning

confidence: 99%

Improved Salt Spray Resistance of Silver-Plated SiO₂ via Self-Assembled Mercapto Inhibitors

Shao

et al. 2023

ACS Appl. Eng. Mater.

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Highly conductive fillers are an essential raw material in the fabrication of conductive composites, paste, ink, adhesive, etc. Still, susceptibility to salt spray erosion remains a serious issue for silver-based fillers. Herein, we first prepared highly conductive silver-plated microspherical silica (Ag/pSiO2) through catechol/polyamine surface functionalization and subsequently formed a self-assembled inhibition layer on the surface of Ag/pSiO2 by using (3-mercaptopropyl)trimethoxysilane (KH590) to enhance the salt spray erosion resistance. The results suggested that the self-assembled KH590 greatly improved the salt spray erosion resistance of the Ag/pSiO2. The total shielding effectiveness (SEt) of the composites protected by KH590 was 106 dB after the salt spray erosion, which was even 16 dB higher than that before erosion. In contrast, the SEt of the composites without KH590 decreased significantly from 111 to 76 dB. Further studies revealed that the KH590 inhibitor strongly prevented the penetration of Cl– and subsequently enhanced the salt spray resistance. Considering the facile and effective preparation, this strategy could be applied in large-scale silver-based EMI shielding materials.

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Corrosion Behavior and Microstructure of 2024 Aluminum Alloy Sheets by Shot Peen Forming in a Salt Spray Environment

Cited by 6 publications

References 36 publications

Corrosion Behavior of Homogenized and Extruded 1100 Aluminum Alloy in Acidic Salt Spray

Corrosion Behavior of Homogenized and Extruded 1100 Aluminum Alloy in Acidic Salt Spray

Preparation of AntiSalt Spray Conductive Silver-Plated Carbon Fiber via Tannic Acid/Metal Ion Complex Inhibitors for Electromagnetic Interference Shielding

Improved Salt Spray Resistance of Silver-Plated SiO₂ via Self-Assembled Mercapto Inhibitors

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Corrosion Behavior and Microstructure of 2024 Aluminum Alloy Sheets by Shot Peen Forming in a Salt Spray Environment

Cited by 6 publications

References 36 publications

Corrosion Behavior of Homogenized and Extruded 1100 Aluminum Alloy in Acidic Salt Spray

Corrosion Behavior of Homogenized and Extruded 1100 Aluminum Alloy in Acidic Salt Spray

Preparation of AntiSalt Spray Conductive Silver-Plated Carbon Fiber via Tannic Acid/Metal Ion Complex Inhibitors for Electromagnetic Interference Shielding

Improved Salt Spray Resistance of Silver-Plated SiO2 via Self-Assembled Mercapto Inhibitors

Contact Info

Product

Resources

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Improved Salt Spray Resistance of Silver-Plated SiO₂ via Self-Assembled Mercapto Inhibitors