Abstract: This invention relates to a sulfidic process of inhibiting corrosion which comprises heating a system with a sulfur-containing polycarboxylic acid or derivatives thereof having carboxylic groups attached to adjacent carbons.

Abstract: The corrosion of galvanically coupled metals can be measured and monitored by linear polarization techniques using a test galvanic electrode comprising two individual electrodes of different metals preferably connected end to end with a rigid metallic fastener. The galvanic electrode is treated as a single electrode and can be used as the test electrode in any two or three electrode configuration which includes at least the test electrode and a reference electrode. A three electrode configuration, including also an auxiliary electrode, is adapted for use in combination with the PAIR meter.

Abstract: An electrochemical cell having a catalytic electrode which comprises a refractory oxide having a surface area of from 1 to 500 square meters per gram and a carbonaceous pyropolymer consisting of carbon and hydrogen forming at least a monolayer on said refractory oxide, said electrode having a conductivity at room temperature of from 10.sup.0 to 10.sup.2 inverse ohm-centimeters.