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  2. 180405-用電化學阻抗譜研究提高鋯基無鉻化學轉化膜耐蝕性的方法
    2018-03-26 15:56:27 作者:徐子謙1,李明芳2,馬鴻婷2,辛鋼2 來源:電鍍與涂飾 分享至:
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      DOI: 10.19289/j.1004-227x.2018.04.005
     
      用電化學阻抗譜研究提高鋯基無鉻化學轉化膜耐蝕性的方法
     
      徐子謙1,李明芳2,馬鴻婷2,辛鋼2, *(1.廈門大學化學化工學院,福建 廈門 361000;2.大連理工大學化學學院,遼寧 大連 116024)
     
      摘要:采用含1.4%(質量分數)ZRT-955 陶化環保處理劑的水溶液(pH = 4.5),在20 °C 下對Q235 鋼板表面鋯化處理12 min,通過測量所得鋯化膜在0.35% (NH4)2SO4 + 0.05% NaCl 的模擬汗液中的電化學阻抗譜(EIS),探索了烘干溫度和緩蝕處理對膜層耐蝕性的影響。確定最佳烘干溫度為180 °C。采用硅氧烷酮類緩蝕劑對鋯基轉化膜進行后處理能夠有效地提高其防腐性能。
     
      關鍵詞:低碳鋼;鋯基轉化膜;電化學阻抗譜;模擬汗液;耐蝕性;緩蝕劑
     
      中圖分類號:TG178; TQ153.6
     
      文獻標志碼:A
     
      文章編號:1004 – 227X (2018) 04 – 0173 – 05
     
      Study on methods for improving corrosion resistance of chromium-free zirconium-based chemical conversion film by electrochemical impedance spectroscopy // XU Zi-qian, LI Ming-fang, MA Hong-ting, XIN Gang*
     
      Abstract: Q235 steel sheets were treated by zirconium-based chemical conversion in an environment-friendly solution containing 1.4wt.% of ZRT-955 zirconization agent at a temperature of 20 °C and pH 4.5 for 12 min. The effects of baking temperature and corrosion inhibition treatment on corrosion resistance of the zirconium-based conversion film were studied by electrochemical impedance spectroscopy in an artificial sweat solution composed of 0.35% (NH4)2SO4 and 0.05% NaCl.The optimal baking temperature was determined to be 180 °C. The post-treatment with siloxane ketone inhibitor greatly improves the corrosion resistance of zirconium-based conversion film.
     
      Keywords: mild steel; zirconium-based conversion film; electrochemical impedance spectroscopy; artificial sweat;corrosion resistance; corrosion inhibitor
     
      First-author's address: Chemical Engineering College, Xiamen University, Xiamen 361000, China
     
      PDF全文下載,請點擊具體鏈接:
     
     
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