将１０１根金属丝聚集成束，制成一种检测防锈油膜防护性能的新型测试电极，测定了涂油丝束电极的腐蚀电位和油膜电阻的分布。结果表明，腐蚀电位分布服从非连续二项分布，油膜极化电阻分布服从对数正态分布。基础油中加人油溶性缓蚀剂，减少徐油丝束电极的腐蚀电位在低电位区的分布，减少甚至消除油膜极化电阻在低阻区的分布，明显改善了油膜的防护性能。
In accordance with the electrochemical nature of corrosion of metals, it is reasonable to evaluate the effectiveness of rust preventive oil by electrochelnical measurements. In the past,nearly all such measurements were performed with a single large metal electrode coated with oil. In this paper, a new wire beam electrode was proposed. The electrode consisted of 101 mild steel wire sensors embedded in epoxy resin.The corrosion potential of oil-coated electrode and polarization resistance of oil film for each individual wire could be successively measured. It was found that the distributions of corrosion potential on oiled metal and polarization resistallce of oil film were heterogeneous. Corrosion potential on oil-coated metal followed discontinuous binomial distribution,and the polarization resistance of oil film followed lognormal distribution. Addition of oil-soluble inhibitor into the oil extended the area of high corrosion potential and reduced the area of low polarization resistance.
参考文献
| [1] | SzauerT,KlennowiczZ,Szklarska-SmialowsskaZ．Corrosion,1980,36(8):4002Nowosz—ArkuszewskaL．CorrosionScience,1983,23(1):753李国希,胡茵,吴翠兰．材料保护,1989,22(4):294徐乃欣,张承典,丁翠红．中国腐蚀与防护学报,199o,10(3):228 |
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