US 7713405 B2

 

　　ABSTRACT

 

　　An electrochemical noise method, apparatus and system may be used to estimate and/or calculate parameters of interest related to corrosion rates of an electrically conductive article. The apparatus involves a working electrode （having substantially the same composition of the electrically conductive article）， a reference electrode, and a counter electrode in an environment of interest. The working electrode is placed under potentiostatic control. A current transient between the working electrode and the counter electrode is measured. The working electrode is switched to open potential. A potential transient is measured over the duration of a localized corrosion event. The localized corrosion may then be calculated based on the measured potential transient and the current transient.

 

　　摘要

 

　　电化学噪声的方法，装置和系统可被用于估计和/或计算有关的导电性物品的腐蚀速率的感兴趣的参数。该装置包括一个工作电极（具有基本导电性物品的相同组合物），参比电极，并在感兴趣的环境中的对电极。将工作电极置于恒电位下的控制。在工作电极和对电极之间的电流瞬变的测量。在工作电极被切换到开路电势。在一个局部腐蚀事件的持续时间里一个瞬时电势被测量。局部腐蚀然后可以基于所测量的电势瞬间，电流瞬态计算。