Engineered Surfaces for the Lithium Tokamak Experiment

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-04ER84045
Agency Tracking Number: 75376B04-I
Amount: $650,000.00
Phase: Phase II
Program: SBIR
Awards Year: 2005
Solicitation Year: 2004
Solicitation Topic Code: 02 b
Solicitation Number: DOE/SC-0072
Small Business Information
4914 Moores Mill Road, Huntsville, AL, 35811
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Scott O'Dell
 (256) 851-7653
Business Contact
 Timothy McKechnie
Title: Mr.
Phone: (256) 851-7653
Research Institution
75376B Reactor studies have identified liquid lithium walls as a promising solution to magnetic fusion energy first wall problems. For near-term applications, such as the Lithium Tokamak eXperiment (LTX), a thin-film approach has been pursued; however, thin lithium films can become saturated with hydrogen and form LiH, which is not attractive as a plasma facing component. A ¿thick¿ lithium film approach would enable hundreds of discharges without the formation of LiH. This project will develop engineered surfaces to enable the evaluation of a thick lithium film approach for plasma facing components. Phase I demonstrated the feasibility of plasma-spray-formed engineered surfaces for use with liquid lithium plasma facing components. Testing was performed to demonstrate the excellent wetting characteristics of the plasma-spray-formed porous deposits with liquid lithium ¿ plasma-sprayed porous Mo surfaces were wet at temperatures less than 300¿C. During Phase II, the engineered surface fabrication techniques will be optimized for full scale testing of a thick lithium plasma facing concept within LTX. Comparisons to thin films of liquid lithium adhered to a nonporous stainless steel surface by surface tension will be made. Commercial Applications and Other Benefits as described by the awardee: The thick film technology should have commercial application to heat pipes; thermal and electrical insulating coatings for the electronics industries; improved chemical compatibility for molten metal processing; and improved thermal protection systems for furnaces, turbines, incinerators, plasma torches, rocket engines, fuel injectors, hard coatings, plasma treating of materials, and thick film heaters.

* Information listed above is at the time of submission. *

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