INVESTIGATION ON THE REPAIRING EFFECT OF ALTERNATING VOLTAGE ELECTRIC FIELD ON THE PITTED NiCr ALLOY ELECTRODE

J Chin Soc Corr Pro

2003, Vol. 23

Issue (2): 92-98 DOI:

Research Report

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INVESTIGATION ON THE REPAIRING EFFECT OF ALTERNATING VOLTAGE ELECTRIC FIELD ON THE PITTED NiCr ALLOY ELECTRODE

Yunchao Li;Chuanwei Yan;Hongping Duan

中科院金属所金属腐蚀与防护国家重点实验室

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Abstract The repairing effect of Alternating Voltage electri c field on the pitted NiCralloy electrode is investigated by means of convention al electrochemical measurement techniques.The effect of the Alternating Voltage electric field with different parameters,such as the top or bottom potentials,fr equency,ratio of time,on the properties of repassive film displays certain regul arity,and exists optimal range for parameters' value,that is EH(800～1000 mV),EL(-200～0 mV),F(5～20 Hz).The electric field with adequate param eters will produce obvious repairing effect on the pitted electrode.The paramete rs’ condition is optimized by perpendicularity experiment,i.e.EH=800 mV， EL=-200 mV，R=1/2，F=10 Hz.

Key words: NiCralloy pitting passive film electric field

Received: 21 August 2001

ZTFLH:

TG174.36

Corresponding Authors: Yunchao Li

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Yunchao Li; Chuanwei Yan; Hongping Duan. INVESTIGATION ON THE REPAIRING EFFECT OF ALTERNATING VOLTAGE ELECTRIC FIELD ON THE PITTED NiCr ALLOY ELECTRODE. J Chin Soc Corr Pro, 2003, 23(2): 92-98 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2003/V23/I2/92

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