九州大学 · 工学
Muye Yang教授の研究室では、鋼構造物におけるガルバニック腐食のメカニズムとその制御に焦点を当てた腐食科学・材料工学の研究を推進しています。特に、炭素繊維強化プラスチック(CFRP)と鋼鉄の界面で生じる腐食挙動、環境要因(湿度、温度、水膜状態)の影響、および効果的な腐食防止技術(例如:犠牲アノード方式、熱溶射被覆、水分保持繊維)の開発を実践的・実験的に検討しています。近年では、屋外環境下における長寿命化技術の確立を目指した、電気化学的評価と加速試験を組み合わせた包括的アプローチが特徴です。
Figures are computed from collected data and may differ slightly.
For a steel structure with carbon fiber-reinforced polymer (CFRP) bonded reinforcement, galvanic corrosion is thermodynamically favored between the carbon fiber and metal. However, understanding of corrosion behaviors and mechanisms between two materials in atmospheric environments remain limited. This study investigated the galvanic corrosion behavior between carbon fiber and steel based on activation-controlled kinetics. The inhibition and facilitation factors of galvanic corrosion in an atmos
To examine the macro-galvanic corrosion of carbon steel near the air–liquid interface, a test panel of array electrodes was developed for investigating the corrosion behaviour in NaCl solution and wet soil environment. The corrosion rates were evaluated by electrochemical approaches and verified by the corrosion exposure tests. The analysis focused on the interaction between the macrocell and microcell according to the ZRA, EIS, and OCP measurements. Test results reveal that the coexisting of ma
In this study, we developed a cathodic protection (CP) system, which includes a sacrificial anode and a moisture-absorbent fiber sheet, and applied it to old steel structures exposed in a chloride environment, especially localized steel members susceptible to corrosion. Additionally, we evaluated the effects of environmental changes caused by the electrolyte and anodic material on the durability and effectiveness of the CP system. To verify the corrosion kinetics of steel affected by the sacrifi
Carbon fiber-reinforced plastic (CFRP)-strengthened steel structures are susceptible to galvanic corrosion, especially in high-humidity and marine environments. This study evaluated the key factors influencing galvanic corrosion coupled between carbon fiber and common steel. These factors include the specific electrochemical properties of unidirectional carbon fiber (CF) materials, contact mode between dissimilar materials, and environmental temperature. The results reveal that the carbon filame
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