Fabrication and performance testing of CaO insulator coatings on V-5%Cr-5%Ti in liquid lithium
- Argonne National Lab., Chicago, IL (United States)
Corrosion resistance of structural materials, and the magnetohydrodynamic (MHD) force and its influence on thermal hydraulics and corrosion, are major concerns in the design of liquid-metal blankets for magnetic fusion reactors (MFRs). The objective of this study is to develop in-situ stable coatings at the liquid-metal/structural-material interface, with emphasis on coatings that can be converted to an electrically insulating film to prevent adverse currents that are generated by the MHD force from passing through the structural walls. The electrical resistance of CaO coatings produced on V-5Cr-5Ti by exposure of the alloy to liquid Li that contained 0.5 - 8.5 wt.% dissolved Ca was measured as a function of time at temperatures between 250 and 600{degree}C. The solute element, Ca in liquid Li, reacted with the alloy substrate at 400-420{degree}C to produce a CaO coating.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- OSTI ID:
- 115711
- Report Number(s):
- DOE/ER-0313/17; ON: DE95013663; TRN: 95:022901
- Resource Relation:
- Other Information: PBD: Apr 1995; Related Information: Is Part Of Fusion materials semiannual progress report for the period ending September 30, 1994; PB: 390 p.
- Country of Publication:
- United States
- Language:
- English
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