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Pitting failure boundary of duplex stainless steel under sour condition was investigated by electrochemical and immersion tests. Polarization measurements investigate the effect of temperature and H2S on the corrosion behavior.
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High-entropy alloys (HEAs), are multicomponent alloys of at least 5 elements with 5-35 atomic % each. Immersion and electrochemical testing indicate that some high-entropy alloys have better corrosion performance than commercial alloys UNS N10276, UNS K03014, and UNS 31600.
We are using electrochemical methods to measure the corrosion rates of low alloy steels, stainless steels, and Zircaloy-4 that can be used to represent H2 generation rates under the range of Eh-pH conditions that could occur in a disposal system.
This paper compares and contrasts the accelerated laboratory autoclave (NACE TM0185) performance at 300°F (149°C), and 250 psig, of eight polycyclamine cured epoxy linings. The latter were tested for tank, vessel and pipe spool applications in the oil and gas industry. Five of the linings were commercially available and three were experimental. A modified amine cured epoxy was also evaluated in the study, a lining used to transport shale oil in railcars at temperatures up to 200°F (93°C).
Over the past several years, the Bureau of Reclamation’s Materials Engineering Research Laboratory has been developing and refining a test method to evaluate a coating’s resistance to erosion damage in sediment-laden immersion exposure. This test has initially been utilized as a screening/ranking method in selection of new coatings for the aforementioned severe service environments.
This paper summarizes a coating application to a diver’s barge and field performance evaluation process for a system that prevents quagga mussels from attachment. The coating system utilizes two separate manufactures for the one system on the immersion side, combined to create a non adhering quagga mussel barrier coating.
HISTORICAL DOCUMENT. Standard test methods for evaluating protective coatings for immersion service. Two test methods for evaluation of both chemical resistance and permeability for coatings on any substrate.