RU2001119059A - METHOD FOR USING ELECTROCHEMICAL NOISE IN CORROSION - Google Patents

Claims (9)

1. The method involving the use of electrochemical noise to determine the corrosion rate of an electrically conductive product, which consists in placing a working electrode, a reference electrode and a counter electrode in a corrosive environment of interest, said working electrode having substantially the same composition as the product , measure the potential in an open circuit between the working electrode and the reference electrode for the first time period, perform potentiostatic control of the working electrode, and from measure the current between the working electrode and the counter electrode for a second period of time. 2. A method involving the use of electrochemical noise to determine the corrosion rate according to claim 1, wherein said first time period and said second time period are essentially equivalent. 3. A method involving the use of electrochemical noise to determine the corrosion rate according to claim 1, wherein the working electrode, when performing potentiostatic control, is maintained at a substantially steady state potential substantially equivalent to the measured potential. 4. A method involving the use of electrochemical noise to determine the corrosion rate according to claim 3, in which the steady state potential is essentially equivalent to the measured potential at the end of the first time period. 5. A method involving the use of electrochemical noise to determine the corrosion rate according to claim 1, wherein said counter electrode and said reference electrode consist of a material that is substantially inert in said corrosive environment. 6. The method involving the use of electrochemical noise according to claim 1, which consists in repeating the measurement of the potential in an open target between the working electrode and the reference electrode for a first period of time, potential control of the working electrode, and repeating the current measurement between the working electrode and the counter electrode during the second period of time. 7. A system for measuring corrosion, involving the use of electrochemical noise, essentially consisting of a working electrode, which consists of a material of interest, a counter electrode that is inert in the environment of interest, a reference electrode that is inert in the environment of interest, and a measurement system connected with said working electrode, a counter electrode and said reference electrode, said measuring system being configured to control the potential between a crushed working electrode and said electrode for comparing and monitoring an open circuit current between said counter electrode and said working electrode. 8. A system for measuring corrosion, comprising the use of electrochemical noise according to claim 7, in which said counter electrode and said reference electrode consist of a material that is inert in said corrosive environment. 9. The system for measuring corrosion, comprising the use of electrochemical noise according to claim 7, further comprising a processing unit that is configured to automatically measure the potential in an open circuit between the working electrode and the reference electrode for a first period of time, performing potentiostatic control of the working electrode, and measuring current between the working electrode and the counter electrode for a second period of time.