skip to main content

DOE PAGESDOE PAGES

Title: Oxidation of alloys for energy applications in supercritical CO 2 and H 2O

To facilitate development of supercritical CO 2 (sCO 2) power plants, a comparison of the oxidation behavior of austenitic stainless steels and Ni-base alloys in sH 2O and sCO 2 were made. Experiments were conducted at 730 °C/207 bar (sCO 2) and 726 °C/208 bar (sH 2O). Ni-base alloys in sCO 2 did not exhibit much change with pressure. Ni-base alloys in sH 2O had an increase in corrosion rate and the log of the parabolic rate constant was proportional to pressure. Lastly, fine-grain austenitic stainless steels in sCO 2 and sH 2O were both less protective with pressure as the dense protective chromia scale was replaced with faster growing Fe-oxide rich scales.
Authors:
 [1] ;  [2] ;  [1]
  1. National Energy Technology Lab. (NETL), Albany, OR (United States)
  2. National Energy Technology Lab. (NETL), Albany, OR (United States); AECOM, Albany, OR (United States)
Publication Date:
Report Number(s):
NETL-PUB-20231
Journal ID: ISSN 0010-938X; PII: S0010938X16301184
Type:
Accepted Manuscript
Journal Name:
Corrosion Science
Additional Journal Information:
Journal Volume: 109; Journal Issue: C; Journal ID: ISSN 0010-938X
Publisher:
Elsevier
Research Org:
National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Supercritical CO2, Supercritical H2O, austenitic stainless steel, Ni-base superalloys, oxidation
OSTI Identifier:
1247687