WIRE BEAM ELECTRODE USED FOR INVESTIGATING RUST PREVENTIVE OIL FILM

J Chin Soc Corr Pro

1996, Vol. 16

Issue (4): 298-302 DOI:

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WIRE BEAM ELECTRODE USED FOR INVESTIGATING RUST PREVENTIVE OIL FILM

ZHONG Qingdong; SHU Yude; JIANG Hanying; WU Cuilan (Central-south University of Technology)(Hunan University)

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Abstract 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.

Key words: Rust preventive oil Electrochemical measurement Wire beam electrode

Received: 25 August 1996

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ZHONG Qingdong; SHU Yude; JIANG Hanying; WU Cuilan (Central-south University of Technology)(Hunan University). WIRE BEAM ELECTRODE USED FOR INVESTIGATING RUST PREVENTIVE OIL FILM. J Chin Soc Corr Pro, 1996, 16(4): 298-302.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1996/V16/I4/298

1SzauerT,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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