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防蝕工程 EIScopus
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| 篇名 | 陰極防護對鋼材抗蝕及機械性能之影響 |
|---|---|
| 卷期 | 8:1 |
| 並列篇名 | A study on the protection of steel using cathodic potential in 3.5% nacl solution |
| 作者 | 黃然 、 葉為忠 、 張建智 、 吳建國 |
| 頁次 | 14-18 |
| 關鍵字 | 臨界保護電位 、 mechanical properties 、 medium carbon steel 、 cathodic protection 、 critical protection potential 、 機械性能 、 中碳鋼 、 陰極防護 、 EI |
| 出刊日期 | 199403 |
中文摘要
中碳鋼棒在25℃及3.5%NaCl溶液中經外加電位測試，電位在-0.75V(SCE)時即達臨界保護電位值(critical protection potential)。未加電位保護之鋼棒試體浸泡30天後測出之腐蝕速率爲5mpy。鋼筋之機械強度因腐蝕面影響而有明顯損失，本研究顯示陰極防護並不造成鋼棒之機械性能的損失，即在3.5%NaCl溶液中並不因氫氣之生成而損失鋼筋之強度與延展性。此外，外加電位以-0.75～-0.8V(SCE)爲宜。
英文摘要
The critical protection potential for medium carbon steel specimens in 3.5% NaCl solutionat 25℃ was evaluated, and -0.75V(SCE)critical protection potential was obtained.After30-day immersion testing, the corrosion rate of specimens without protection potential was 5mpy.Mechanical properties of corroded specimens show significant degradation. On the otherhand, specimens protected by impressed current show no evident changes in mechanical properties, i.e., specimens under impressed current protection in the 3.5% NaCl solution do not lose their strength and ductility because of hydrogen effect. According to this study, the optimum range of protection potential is -0.75V～-0.80V(SCE).