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Characterization of Iron-Chromium-Aluminum surface coated Zircaloy-2 under high temperature steam
Zhong, Weicheng
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https://hdl.handle.net/2142/90654
Description
- Title
- Characterization of Iron-Chromium-Aluminum surface coated Zircaloy-2 under high temperature steam
- Author(s)
- Zhong, Weicheng
- Issue Date
- 2016-04-29
- Director of Research (if dissertation) or Advisor (if thesis)
- Heuser, Brent J.
- Department of Study
- Nuclear, Plasma, & Rad Engr
- Discipline
- Nuclear, Plasma, Radiolgc Engr
- Degree Granting Institution
- University of Illinois at Urbana-Champaign
- Degree Name
- M.S.
- Degree Level
- Thesis
- Date of Ingest
- 2016-07-07T19:58:05Z
- Keyword(s)
- Cladding
- FeCrAl
- Zircaloy
- coating
- oxidation
- Abstract
- Iron-Chromium-Aluminum (FeCrAl) thin films have been deposited on Zircaloy-2 (Zry2) and yttria-stabilized zirconia (YSZ) by magnetron sputtering, and they have been tested with respect to the oxidation weight gain in high temperature steam. In 700C steam environment, the FeCrAl-coated Zry2 samples have significantly reduced the oxidation rate, compared to the uncoated Zry2. Alumina was promoted for FeCrAl with high Al composition, and a parabolic alumina growth rate under 700_C steam exposure was quantified by AES depth profile. Zirconia formation was inhibited by the FeCrAl coating. A thicker film proved to be more protective, and delayed zirconia formation for a longer time. In 1100C steam environment, a complete film loss was observed due to the low eutectic temperature (950C) of the Fe-Zr binary system.
- Graduation Semester
- 2016-05
- Type of Resource
- text
- Permalink
- http://hdl.handle.net/2142/90654
- Copyright and License Information
- Copyright 2016 Weicheng Zhong
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Graduate Dissertations and Theses at Illinois PRIMARY
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