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| A THEORETICAL APPROACH OF THE ELECTROCHEMICAL BEHAVIOR WITHIN CORROSION CREVICE Ⅱ. THE DEPENDENCE OF POTENTIAL, PH AND C(?)CONCENTRATION WITHIN CREVICE ON APPLIED POLARIZATION POTENTIAL AND TIME |
| Huang Zixun Li Delin and Jai Jinkun (Beijing Institute of Aeronautics and Astronautics; Beijing China) |
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Abstract The potential, pH and Cl~- concentration changes of a modulated crevice were measured simultaneously at the distance oi 4, 8, 13.5 and 18.5 mm from the crevice opening. The distribution of potential, pH and Cl~-concentration along the crevice and their changes with time in the presence and absence of stress were recorded in 3.5%NaCl solution for 3oCrMnSiA specimens. Results showed that in the absence of applied stress potential gradient increased with applied polarizaton potential, and the relationships between pH, Cl~- and crevice potential were: pH=-4-(40)/3E and [Cl~-]x=17+21E; whereas in the presence of applied stress,potential and pH change fluctunatly with time, the maximum change in potential was 70mV and that in pH was 1.5 respectively, while Cl~- concentration remained unchanged.
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Received: 25 June 1986
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Cite this article:
Huang Zixun Li Delin and Jai Jinkun (Beijing Institute of Aeronautics and Astronautics; Beijing China). A THEORETICAL APPROACH OF THE ELECTROCHEMICAL BEHAVIOR WITHIN CORROSION CREVICE Ⅱ. THE DEPENDENCE OF POTENTIAL, PH AND C(?)CONCENTRATION WITHIN CREVICE ON APPLIED POLARIZATION POTENTIAL AND TIME. J Chin Soc Corr Pro, 1986, 6(3): 21-30.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1986/V6/I3/21
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