| 摘要 |
A method of electrochemically-testing a bare or chemically-treated metal or other electrically-conductive surface to determine its characteristics, by contacting the surface with a dilute electrolyte, measuring at least the steady-state potential of the surface and preferably also the direct current amperages obtained when respective small positive and negative voltage differentials (relative to the steady-state potential) typically +/- 50 millivolts are applied to the electrolyte solution; and comparing and contrasting the measured results with those secured with a standard comparison surface. …<??>This testing method is used to check the quality of the output of metal pretreatment processes and in methods of controlling their operation. …<??>Testing apparatus used in these methods includes an open-ended electrochemical cell, containing a standard reference electrode and a counter-electrode, for positioning on the surface to be tested as well as circuitry and meters for reading the steady-state potential of the reference electrode and the currents flowing between the surface under test and the counter-electrode via electrolyte in the cell. |
