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

 

　　電化學噪聲的方法，裝置和系統可被用于估計和/或計算有關的導電性物品的腐蝕速率的感興趣的參數。該裝置包括一個工作電極（具有基本導電性物品的相同組合物），參比電極，并在感興趣的環境中的對電極。將工作電極置于恒電位下的控制。在工作電極和對電極之間的電流瞬變的測量。在工作電極被切換到開路電勢。在一個局部腐蝕事件的持續時間里一個瞬時電勢被測量。局部腐蝕然后可以基于所測量的電勢瞬間，電流瞬態計算。