Volume 33 Issue 10
Oct.  2007
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Rao Sixian, Zhang Yubo, Zhu Liqun, et al. Electrochemical behaviour of LY12CZ under applied stress[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(10): 1246-1250. (in Chinese)
Citation: Rao Sixian, Zhang Yubo, Zhu Liqun, et al. Electrochemical behaviour of LY12CZ under applied stress[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(10): 1246-1250. (in Chinese)

Electrochemical behaviour of LY12CZ under applied stress

  • Received Date: 01 Nov 2006
  • Publish Date: 31 Oct 2007
  • Potentiodynamic polarization and electrochemical impedance spectroscopy(EIS) techniques were applied to investigate the corrosion behavior of LY12CZ in 3%NaCl aqueous solution.The effects of stress to anodic polarization behavior,free corrosion potential,breakdown potential,polarization resistance and double-layer capacitance of LY12CZ were summarized.Results show that the polarization curve and breakdown potentials show obvious negative removals,and the mechanochemical effects reached maximum during the strain hardening stage. If stressed,under equivalent immersion time, polarization resistance also decreased significantly with the increase of stress.The nagetive removal of breakdown potential and decrease of polarization resistance indicate that stress plays an important role in the localized corrosion of LY12CZ.

     

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