Electricity: measuring and testing – Electrolyte properties
Patent
1983-01-05
1986-03-11
Karlsen, Ernest F.
Electricity: measuring and testing
Electrolyte properties
204404, 324 712, 324348, G01N 2700
Patent
active
045756783
ABSTRACT:
In an apparatus or installation having a metal part corroding in an electrolyte contacting the part, that part is a first electrode electrically insulated from a second electrode, for example another part of the apparatus, also contacting the electrolyte. No external electrical power is applied to the electrodes/electrolyte system. The low frequency voltage between the electrodes is observed. This voltage is a low frequency noise signal. Amplitude values of the signal are measured and subjected to an averaging computation yielding data indicating the corrosion rate of the first electrode and the nature of the corrosion.
REFERENCES:
patent: 2374088 (1945-04-01), Fontana et al.
patent: 2777111 (1957-01-01), Hunter
patent: 3365376 (1968-01-01), Weyland
patent: 4322805 (1982-03-01), Rog et al.
Iverson, Warren P., "Transient Voltage Changes Produced in Corroding Metals and Alloys", J. of Electrochemical Soc.: Electrochemical Science, Jun. 1968.
Karlsen Ernest F.
O'Shea Kevin D.
The University of Manchester Institute of Science and Technology
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