Effects of temperature and operation parameters on the galvanic corrosion of Cu coupled to Au in organic solderability preservatives process

Oh, Seung Jin; Kim, Young‐Jun; Jung, Ki Min; Kim, Jongsoo; Shon, MinYoung; Kwon, Hyuk‐Sang

doi:10.1007/s12540-017-6495-1

Cited by 10 publications

(4 citation statements)

References 19 publications

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“…The difference in dissolved oxygen concentration induces the formation of an oxygen concentration cell. [23,24] This cell acts as a driving force for the propagation of pitting corrosion of Al in the solution. Pitting corrosion of Al in a 3.5 wt% NaCl solution propagates with an electromotive force of 0.09 V. Figure 6 shows the corrosion behavior of pure aluminum at 25°C in DI water and a 3.5 wt% NaCl solution.…”

Section: → H + 2ementioning

confidence: 99%

Effects of environmental factors on corrosion behavior of aluminum

Jung

Kwon

2020

Materials & Corrosion

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Aluminum, used as a material for heat exchangers in air conditioners, often has problems of leakage of refrigerant on the Al surface due to corrosion. The problems originate from pitting corrosion of the Al in an external environment. To understand corrosion problems, it is necessary to study the corrosion behavior of Al in various environments. In this study, the effects of environmental factors on the corrosion behavior of Al were studied by the surface analysis and electrochemical testing in 3.5 wt% NaCl solutions, with changes of dissolved oxygen, temperature, and concentration of Cl− and S ions. Among the external environmental factors, the presence of oxygen and the increase of Cl− ion concentration do not significantly affect the corrosion potential of Al, leading to an increase of only 1.1 and 6 times, respectively. There was a significant decrease in the corrosion resistance of Al, approximately 40 and 800 times, respectively, with the increase of concentration of S and temperature.

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Section: → H + 2ementioning

confidence: 99%

Effects of environmental factors on corrosion behavior of aluminum

Jung

Kwon

2020

Materials & Corrosion

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“…Generally speaking, the material with a low electrode potential acted as the anode and the material with a high electrode potential acted as the cathode in the galvanic couple [46]. The GCP of the Cu-Fe GC is close to the OCP of the drawn steel 20 electrode, indicating that the copper electrode is only used as the supporter of the cathode process.…”

Section: Open-circuit Potentialmentioning

confidence: 92%

Galvanic Corrosion Behavior of Copper–Drawn Steel for Grounding Grids in the Acidic Red Soil Simulated Solution

Fan

Chen

Lin

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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The influence of pH and metallographic structure on the corrosion behavior of copper-drawn steel is studied with the simulated system. The effect of pH on the corrosion behavior of copper-drawn steel has been investigated using open-circuit potential, potentiodynamic polarization, galvanic current measurement, scanning electron microscopy and scanning vibrating electrode technique techniques. The steel is corroded as anode, while the corrosion of copper plate is protected as cathode. All the results revealed that pH and metallographic structure had a significant influence on the corrosion behavior of copper-drawn steel. With the decrease in pH value from 6 to 2.4, the corrosion rate of copper-drawn steel galvanic couple (Cu-Fe GC) obviously increased in the simulated solution of acidic red soil. The electric field formed by the Cu-Fe GC changes the direction of ion migration between the copper and drawn steel electrodes, which impacts the composition and microstructure of corrosion products formed on the electrode surface.

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“…These uncoated contact structures may cause severe galvanic corrosion while they are exposed to corrosive atmospheres . Galvanic corrosion is affected by multiple factors, including the area ratio of the cathode/anode, the coupled distance, temperature, electrolyte concentration, and the flow rate of the medium . These influential factors do not exist in isolation, rather they interact and have a broad impact on corrosion characteristics; any change in the above‐mentioned factors may cause the corrosion characteristics to alter profoundly.…”

Section: Introductionmentioning

confidence: 99%

Anode characteristics of Al/Ti galvanic couple in a salt spray environment

Zou

Zhou

et al. 2019

Materials & Corrosion

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The galvanic corrosion behavior of a 2A12 aluminum alloy and a Ti-15-3 titanium alloy in a salt spray environment was investigated. The results indicated that the galvanic effect accelerated the dissolution rate of the anodes significantly; however, the corrosion of the anode was not uniform. The region adjacent to the coupled joint experienced the most significant corrosion, with galvanic corrosive action emerging as dominant. The corrosion of the region distant from the joint was slight and was dominated by the self-corrosion process. A new model for the current difference distribution of the galvanic couple was established to illuminate the nonuniform corrosion phenomenon of the anode. K E Y W O R D S aluminum alloy, anode characteristics, galvanic corrosion, salt spray environment

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Effects of temperature and operation parameters on the galvanic corrosion of Cu coupled to Au in organic solderability preservatives process

Cited by 10 publications

References 19 publications

Effects of environmental factors on corrosion behavior of aluminum

Effects of environmental factors on corrosion behavior of aluminum

Galvanic Corrosion Behavior of Copper–Drawn Steel for Grounding Grids in the Acidic Red Soil Simulated Solution

Anode characteristics of Al/Ti galvanic couple in a salt spray environment

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