Electrochemical Corrosion Tests of Aluminum 1100 Alloy Coupons in Acid Condensate Environment

Shinde, V. N.; Argade, Gaurav; Chilukuri, Anusha; Gehrich, Monica; Parikh, Chirag R.

doi:10.1007/978-3-030-92381-5_61

Cited by 1 publication

(1 citation statement)

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“…Hosni Ezuber et al [ 10 ] studied the corrosion behavior of AA5083 and AA1100 aluminum alloys in seawater at 23 and 60 °C, and showed that the types of intermetallic particles in the aluminum alloy played a major role in passivity breakdown and pit morphology in seawater. Vasundhara Shinde et al [ 11 ] studied the corrosion of Al 1100 alloys in an acidic condensation environment and found that the formation of acidic condensation droplets led to uneven corrosion of Al 1100 samples. Thus, immersion corrosion is a kind of uniform corrosion which cannot effectively characterize the corrosion behavior of metal materials in an atmospheric environment.…”

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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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: Introductionmentioning

confidence: 99%