FERROUS STRUCTURAL COMPONENT FOR USE IN FOULING AND CORROSIVE ENVIRONMENTS, AND METHOD OF MAKING AND USING A FERROUS STRUCTURAL COMPONENT
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United States of America
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Jan 9, 2020
app pub date -
Jul 2, 2019
filing date -
Jul 2, 2019
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Abstract
A method of using a ferrous structural component is described. The method comprises integrating a ferrous structural component into process equipment, where the ferrous structural component comprises an iron alloy body with a modified surface including an aluminized surface layer that comprises one or more iron aluminides. The modified surface of the iron alloy body is exposed to an oxidative environment, thereby forming, as part of the modified surface, a passivating layer comprising aluminum oxide on the aluminized surface layer. The modified surface is also exposed to a process fluid. The exposure to the oxidative environment occurs prior to and/or upon exposure of the modified surface to the process fluid. Due to protection afforded by the passivating layer, the modified surface resists fouling and corrosion while exposed to the process fluid, as exhibited by a substantial absence of carbonaceous deposits on the iron alloy body.
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