Title

Comparison of the Corrosion of Materials in Supercritical Carbon Dioxide, Air, and Argon Environments

Published In

Corrosion Science

Document Type

Citation

Publication Date

11-1-2021

Abstract

The corrosion resistance of structural alloys was investigated in conditions that simulate supercritical carbon dioxide sCO2" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 0px; display: inline-block; line-height: normal; font-size: 16.2px; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">2 power fluid environments at 20 MPa and 550°" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 0px; display: inline-block; line-height: normal; font-size: 16.2px; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">°C. Complementary air and Ar experiments were conducted at 1 atm. The alloys investigated in this study were as follows: Gr. 91, ferritic martensitic steel; 316L, austinetic stainless steel; HR 120, Ni-Fe based superalloy; and IN625, Ni based superalloy. The results for the air and sCO2" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 0px; display: inline-block; line-height: normal; font-size: 16.2px; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">2 exposed samples indicated parabolic mass-gain with respect to time and sCO2" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 0px; display: inline-block; line-height: normal; font-size: 16.2px; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">2 was more aggressive. The austinetic alloys exposed to sCO2" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 0px; display: inline-block; line-height: normal; font-size: 16.2px; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">2 developed recrystallized zones under the oxide. The same alloys exposed to air showed signs of recrystallization that was detectable with TEM.

Rights

© 2021 Elsevier Ltd. All rights reserved.

DOI

10.1016/j.corsci.2021.109752

Persistent Identifier

https://archives.pdx.edu/ds/psu/36682

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