A laboratory test method was developed to evaluate corrosion inhibitors for use in various parts of refineries. The apparatus devised could be used for evaluation of oil-soluble and water-soluble corrosion inhibitors for steel at an acid pH and for Admiralty metal inhibitors at an alkaline pH at low concentrations of oxygen. Reasonably reproducible results were obtained with water-soluble inhibitors on steel at mildly acid pH. Reproducibility was poorer on Admiralty metal at a slightly alkaline pH. Elimination of corrosion coupons in favor of a corrosion probe gave good reproducibility.

Data reported include weight loss of strips by various cleaning methods, effectiveness of 13 inhibitors on steel in acid, corrosion rate of Admiralty metal at a pH of 8.3 (in NH3 and H2S), and inconsistencies in MIL-I-25017 ASTM ratings of coupons. 5.8.1

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Copyright 1959 by the National Association of Corrosion Engineers.
1959
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