Sungkyunkwan University · Materials Science
Professor Jung-Gu Kim's research lab specializes in corrosion science and materials engineering, with a focus on understanding and mitigating localized corrosion in metallic systems under complex environmental conditions. The lab investigates the synergistic effects of environmental factors—such as pH, chloride, and sulfate—on pipeline and structural materials, employing advanced experimental designs like response surface methodology and electrochemical techniques. It also explores corrosion inhibition mechanisms, particularly using agents like benzotriazole on copper and stainless steels, and applies emerging technologies such as machine learning to accelerate materials discovery for energy and infrastructure applications.
Figures are computed from collected data and may differ slightly.
External damage to buried pipelines is mainly caused by corrosive components in soil solution. The reality that numerous agents are present in the corrosive environment simultaneously makes it troublesome to study. To solve that issue, this study aims to determine the influence of the combination of pH, chloride, and sulfate by using a statistical method according to the design of experiment (DOE). Response surface methodology (RSM) using the Box-Behnken design (BBD) was selected and applied to
In this study, the cause of failure of a low-carbon steel pipe meeting standard KS D 3562 (ASTM A135), in a district heating system was investigated. After 6 years of operation, the pipe failed prematurely due to pitting corrosion, which occurred both inside and outside of the pipe. Pitting corrosion occurred more prominently outside the pipe than inside, where water quality is controlled. The analysis indicated that the pipe failure occurred due to aluminum inclusions and the presence of a pear
Carbonaceous residues on copper pipes during the manufacturing process are known to be one of the main causes of pitting corrosion on copper pipes. This study examined the corrosion-inhibiting effect of benzotriazole (BTA) on C12200 copper pipes with carbonaceous film in synthetic tap water. In the absence of BTA, localized corrosion mechanisms due to galvanic corrosion, crevice corrosion, and oxygen-concentration cell were proposed in the boundary part of the carbonaceous film on the copper thr
This study investigates the corrosion resistance of Type 316 stainless steel as a candidate material for radioactive waste disposal canisters. The viability of stainless steel is examined under groundwater conditions with variations in pH, bisulfide ions (HS<sup>-</sup>), and chloride ions (Cl<sup>-</sup>) concentrations. Utilizing response surface methodology, correlations between corrosion factors and two crucial response variables, passive film breakdown potential and protection potential, ar
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