Corrosion and Hardness Behaviour of Al/GO Nanocomposites Processed by the Ultrasonic Gravitational Stir Casting Method

Narayanan, S.; Sozhamannan, G.G.; Hemalatha, K.; Velmurugan, K.

doi:10.1155/2021/6658186

Cited by 11 publications

(2 citation statements)

References 29 publications

(33 reference statements)

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“…Once the rigid oxide liner is removed, the chloride ions spread into the fabricated aluminium composite through the available circumference microcracks and create aluminium chloride with the elimination of hydrogen bubbles. Tis action initiates the generation of pitting corrosion [23,24]. However, nitric and sulfuric acidic solutions showed less amount of corrosion rate than a hydrochloric acidic solution due to the availability of a strong aluminium oxide layer on the circumference surface of the composite.…”

Section: Infuence Of Acidic Solutionmentioning

confidence: 99%

Investigating the Microstructure, Tensile Strength, and Acidic Corrosion Behaviour of Liquid Metal Stir Casted Aluminium-Silicon Carbide Composite

Singh

Ananthapadmanaban²,

Raja

et al. 2023

Advances in Materials Science and Engineering

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The main objective of this investigation is to study the microstructural features and evaluate the tensile strength, hardness, and acidic corrosion resistance of liquid metal stir casted aluminium-silicon carbide (Al-SiC) composite. As reinforcement for the Al alloy matrix, SiC particles were added to the matrix in the percentages of 0%, 10%, and 20%. The microstructure of Al-SiC composite was studied using optical microscope. The effect of addition of SiC particles on tensile strength and hardness of Al-SiC composite was analyzed.. There were significant improvements in tensile strength and hardness for Al–SiC composite reinforced with 20% SiC particles compared to unreinforced Al–SiC composite, and those improvements were of 14.70% and 26.88%, respectively. The evolution of harder SiC islands in the ductile matrix of aluminium alloy reinforce the Al-SiC composite which enhances the strength and hardness of Al-SiC composite. A weight loss method was used to determine corrosion rate. The samples of Al-SiC composite material were immersed in HCl, HNO3, and H2SO4 solutions for immersion times of 30 hours, 56 hours, and 80 hours. It was found that the weight % of reinforcement had the largest contribution to corrosion rate with 49.86% to that of acidic solution with 29.88%, followed by immersion time with 8.85% and acidic solution with a contribution of 29.88% to the corrosion rate. The Al-SiC composite developed using 20 wt. % of SiC particles showed higher corrosion rate due to the interfacial region formed due to the addition of greater wt % SiC particles to the pure alloy.

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Section: Infuence Of Acidic Solutionmentioning

confidence: 99%

Investigating the Microstructure, Tensile Strength, and Acidic Corrosion Behaviour of Liquid Metal Stir Casted Aluminium-Silicon Carbide Composite

Singh

Ananthapadmanaban²,

Raja

et al. 2023

Advances in Materials Science and Engineering

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“…Narayanan et al evaluated the corrosion behaviour of nanographene oxide reinforced aluminium metal matrix composites. Results show corrosion rate decreased with increasing immersion time periods [37]. Mallireddy and Siva studied the corrosion resistance of aluminium matrix composite (7010-TiB) at 5-10 wt.% content.…”

Section: Introductionmentioning

confidence: 99%

Corrosion behaviour of maize husk reinforced aluminium (1070) metal matrix composites in chloride-sulphate solution

Loto

Williams

2022

Mater. Res. Express

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The effect of maize husk (MH) particulates on the corrosion resistance of 1070 aluminium alloy (AA70) matrix at 5% and 15% wt. content, and 150 µm and 300 µm particle size (AA70/MH composites) was studied in 3.5% NaCl, 0.0125 M H2SO4 and 3.5% NaCl/0.0125 M H2SO4 solutions. Potentiodynamic polarization technique, open circuit potential measurement, weight loss analysis, optical microscopy characterization, x-ray fluorescence and x-ray diffractometry were used for the investigation. Results show increase in MH %wt. content and particle size decreases the corrosion rate of AA70/MH composite. Data from potentiodynamic polarization and weight loss analysis shows AA70/MH composite at 15% wt. content and 300 µm particle size exhibited the lowest corrosion values of 0.135 mm/y, 0.156 mm/y and 1.445mm/y, and -0.00043 mm/y, 0.00104 mm/y and 0.00218 mm/y in 3.5% NaCl, 0.0125 M H2SO4 and 3.5% NaCl/0.0125 M H2SO4 solutions. Optical representative images of the composites showed the presence of micro-pits on samples from NaCl solution, macro-pits and extensive surface deterioration from H2SO4 solution and combined localized and total surface deterioration from NaCl-H2SO4 solution. Weight loss plots showed oxide formation significantly influenced the corrosion behavior of the alloys with respect to time. Open circuit potential plots showed AA70/MH composite at 5% wt. content and 150 um particle size was the most electronegative with the highest thermodynamic tendency to corrosion. Significant X-ray diffraction peaks from AA70/MH composite at 15% wt. content and 300 µm particle size showed the presence of corrosion resistant phase compounds of Al2O3 and Al(ZnS2) before and after corrosion.

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The Corrosion Behavior of Graphene-Reinforced Al Matrix Composites in 3.5 wt.% NaCl Solution

Khezerlou

Hosseini

Şenel

et al. 2022

J. of Materi Eng and Perform

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Corrosion and Hardness Behaviour of Al/GO Nanocomposites Processed by the Ultrasonic Gravitational Stir Casting Method

Cited by 11 publications

References 29 publications

Investigating the Microstructure, Tensile Strength, and Acidic Corrosion Behaviour of Liquid Metal Stir Casted Aluminium-Silicon Carbide Composite

Investigating the Microstructure, Tensile Strength, and Acidic Corrosion Behaviour of Liquid Metal Stir Casted Aluminium-Silicon Carbide Composite

Corrosion behaviour of maize husk reinforced aluminium (1070) metal matrix composites in chloride-sulphate solution

The Corrosion Behavior of Graphene-Reinforced Al Matrix Composites in 3.5 wt.% NaCl Solution

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