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| EFFECT OF ALTERNATING VOLTAGE MODULATIONON THE PASSIVITY AND THE FEATURE OFPASSIVE FILM OF STAINLESS STEELS |
| 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 effect of alternating voltage electric fiel d on the corrosion potential,the passivity and the features of passive film of s tainless steels is reviewed,and the results show that AV usually destroys passiv e film,decreases the passive potential region and causes a shift in the corrosio n poten tial.However,some experimental results have evidenced that the overall propertie s of the passive film of stainless steels formation under alternating voltage elec tric field controlled by adequate parameters(i.e.,alternating voltage modulation ) are enhanced by a large scale,such as increasing the stability,the breakdown p otential(Eb) and the resistance against cathodic reductive dissolution of the passive film.The mechanism of passive film formation under alternating v oltage (AV) modulation condition is also summarized in this paper.These indicate there is particular research value in this field.
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Received: 02 July 2001
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Corresponding Authors:
Yunchao Li
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