Method of measuring accelerated corrosion rate

Details Method of measuring accelerated corrosion rate Method of measuring accelerated corrosion rate

1974-12-09

1976-03-30

Tung, T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

204195C, G01N 2746, G01N 2726

Patent

active

039473295

ABSTRACT:
An improvement in the measurement of accelerated corrosion rate when measured on two duplicated electrodes in accordance with U.S. Pat. No. 3,694,324. Difference in free electrode potential between said electrodes is first determined. A means is introduced for varying the ohmic resistance ratio of the isolation resistors through which the cathodic polarizing current is passed to said electrodes. The cathodic current is then applied at a selected rate of increase from zero while said ratio is adjusted to maintain said difference in potential. The cathodic current is then removed and said electrodes are allowed to return to said difference in potential. Measurement is then continuously made of the relationship between corrosion current measured on said electrodes and said cathodic current increased in said manner.

REFERENCES:
patent: 3694324 (1972-09-01), Seyl
patent: 3850736 (1974-11-01), Seyl

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