RECENT APPLICATIONS OF ELECTROCHEMICAL NOISE FOR CORROSION TESTING - BENEFITS AND RESTRICTIONS

摘要

The phenomenon of the electrochemical noise is already known since some decades. With the growing technical possibilities in the fields of electronic measuring devices and recording techniques a new window of observation has been opened for corrosion experts to see and record smallest charge fluctuations from dynamic corrosion processes. The main advantage compared to other electrochemical techniques is the contemporary and sensible way of getting information from the beginning of and the tendency to corrosion. This is also the basis for applications for corrosion testing and examination. In this paper, it is shown as representative for a lot of possible applications, how conventional testing methods and investigation procedures can be enriched by this advantages. The prerequisites with regard to the measuring techniques, the experimental procedure and the assessment of the measured data are shown as well as some natural restrictions, which have to be taken into account.