Corrosion inhibitor screening for AA6014 aluminum alloy under different ambient conditions using a novel multielectrode methodology

Samarawickrama, Chathumini; Pöhlker, Sebastian; White, Paul; Cole, Ivan; Keil, Patrick

doi:10.1039/d4me00013g

Mol. Syst. Des. Eng.

2024

DOI: 10.1039/d4me00013g

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Corrosion inhibitor screening for AA6014 aluminum alloy under different ambient conditions using a novel multielectrode methodology

Chathumini Samarawickrama,

Sebastian Pöhlker,

Paul White

et al.

Abstract: Atmospheric corrosion, an electrochemical phenomenon, initiates the degradation of materials, primarily metals, through their interaction with environmental droplets or aerosols. This degradation extends to various aspects such as material performance,...

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Cited by 2 publications

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A critical review on Nano Ferrites pioneering a paradigm shift in corrosion inhibition towards different metal/alloys in diverse corrosive environments

Kundu,

Akanksha,

Sheetal

et al. 2024

Journal of Environmental Chemical Engineering

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A critical review on Nano Ferrites pioneering a paradigm shift in corrosion inhibition towards different metal/alloys in diverse corrosive environments

Kundu,

Akanksha,

Sheetal

et al. 2024

Journal of Environmental Chemical Engineering

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Effects of CTAB (Cetyltrimethylammonium Bromide) and Betaine as Corrosion Inhibitors on the Galvanic Corrosion of Cu Coupled with Au on Print Circuit Board in Etching Solution

Shin,

2024

Metals

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This study investigates the suppression of galvanic corrosion between copper and gold using cetyltrimethylammonium bromide (CTAB) and betaine as inhibitors. When copper is electrically connected to gold in PCB etching solutions, the substantial difference in their electrochemical potentials leads to the accelerated corrosion of copper, posing severe reliability risks. To mitigate this, we systematically investigated the galvanic corrosion inhibition properties of CTAB and betaine. Through comprehensive electrochemical analyses, it was found that the galvanic corrosion current density of copper, initially at 3.26 mA/cm2, decreased significantly to 0.251 mA/cm2 with 0.9 mM CTAB, indicating an inhibition efficiency of 92.3%. Furthermore, betaine, at a concentration of 0.1 mM, demonstrated an even higher inhibition efficiency, reducing the corrosion current to 0.03 mA/cm2, achieving a 99.1% inhibition rate. These findings provide strong evidence that CTAB and betaine are highly effective in suppressing galvanic corrosion in copper–gold systems, thereby enhancing the long-term performance and reliability of PCBs in electronic applications.

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Corrosion inhibitor screening for AA6014 aluminum alloy under different ambient conditions using a novel multielectrode methodology

Abstract: Atmospheric corrosion, an electrochemical phenomenon, initiates the degradation of materials, primarily metals, through their interaction with environmental droplets or aerosols. This degradation extends to various aspects such as material performance,...

Cited by 2 publications

References 44 publications

A critical review on Nano Ferrites pioneering a paradigm shift in corrosion inhibition towards different metal/alloys in diverse corrosive environments

A critical review on Nano Ferrites pioneering a paradigm shift in corrosion inhibition towards different metal/alloys in diverse corrosive environments

Effects of CTAB (Cetyltrimethylammonium Bromide) and Betaine as Corrosion Inhibitors on the Galvanic Corrosion of Cu Coupled with Au on Print Circuit Board in Etching Solution

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