KOSEN 한인과학기술자네트워크

(SBIR) DOE - Advanced Technologies And Materials For Fusion Systems Primary Sponsor: Department of Energy Deadline: 2/20/2001 An attractive fusion energy source will require the development of technologies and materials that can withstand the high levels of surface heat flux and neutron wall loads expected for the in-vessel components of future fusion energy systems. These technologies and materials will need to be substantially advanced relative to today's capabilities in order to assure the safe, reliable, economic, and environmentally benign operation of fusion energy systems. Grant applications are sought only in the following subtopics: a. Structural Materials and Coatings¾Grant applications are sought for research that will lead to the relaxation of operating limits by further developing the following materials: (1) vanadium alloy structural materials, (2) silicon carbide/silicon carbide (SiC/SiC) structural composites, (3) oxide dispersion strengthened (ODS) ferritic steels, and (4) electrically insulating coatings to reduce magnetohydrodynamic (MHD) effects in vanadium alloy/liquid lithium systems. For vanadium alloys, areas of interest include the development of improved alloys, increased resistance to degradation under neutron irradiation, relaxation of protection requirements set by their sensitivity to gaseous impurities, and the development of advanced welding/joining techniques to produce tough, ductile vanadium alloy-to-vanadium alloy or vanadium alloy-to-steel joints. For SiC/SiC composites, techniques to improve the thermal conductivity, improved and low cost production methods, and advanced joining processes are needed. For ODS ferritic steels, areas of interest include developing low cost production techniques, product isotropy, and joining methods; these materials would allow for higher temperature service than permitted by the creep strength limits of conventional low activation ferritic steels. For electrically insulating coatings, coating technologies to reduce MHD effects must take into consideration the compatibility with both the coated vanadium alloy and liquid lithium coolant for long time operation at elevated temperatures. In addition, grant applications must address the use of candidate coatings on actual system components and account for the in siturepair of defects that could develop in the coating. Note that in this subtopic, the emphasis is on materials for structural applications; issues related to plasma-surface interactions should not be addressed. b. Free Surface Liquids for Heat Removal¾Innovative in-vessel component concepts are desired for heat removal from high power densities (surface heat fluxes at first walls and divertors of about 1 MW/m2 and 50 MW/m2, respectively) with good safety, reliability, and maintenance features. Current interests are focused on evaluating the use of flowing liquid metals with direct exposure to the plasma. Candidate liquids metals include lithium, tin-lithium, tin, gallium, and lead-lithium. Also, lithium-beryllium fluoride salts are of interest for surface heat fluxes up to 2 MW/m2. Grant applications are sought to develop: (1) techniques for the removal of significant heat loads (at least 1 MW/m2) by free surface flowing liquids (proposed techniques should address the effect of magnetohydrodynamics on heat transfer and should also consider heat removal enhancement techniques, such as turbulence promoters), (2) efficient nonlinear solution methods, as well as alternate object-oriented languages for computational tools, to model fusion-relevant issues of liquid wall flows (such as heat transfer at free surfaces and free flows with magnetohydrodynamic effects and turbulence), (3) techniques to suppress surface vaporization, such as the addition of alloying materials, (4) nozzles for liquid injection (e.g., streams, jets, films, and droplets) and collection/removal techniques that are drip and splash free, self-cooling, and efficient in head recovery at the outlet, and (5) non-invasive diagnostics for experiments to study high temperature free surface liquid flows in magnetic fields (such diagnostics might include measurements of mean flow velocity, turbulence intensity, velocity fluctuations, flow depth, and surface/depth temperature profiles). Please note: (1) The technical topics are to be interpreted literally; DOE personnel are not permitted to further interpret the narrative description of the technical topics. (2) The award selection process is extremely competitive. Last year, only 1 out of 6 grant applications were awarded. Only those applications with the highest scientific/technical quality will be competitive. References Subtopic a: Structural Materials and Coatings Proceedings of the 1997 8th International Conference on Fusion Reactor Materials (ICFRM-7), Sendai, Japan, October 26-31, 1997, Journal of Nuclear Materials, Vols. 258-263 (Parts A and B), Amsterdam: Elsevier, 1996; ibid., Vols. 271-272 (Part C), 1999. (ISSN: 0022-3115) Subtopic b: Free Surface Liquids for Heat Removal Abdou, M. A., et al., eds., Proceedings of the 3rd International Symposium on Fusion Nuclear Technology, Los Angeles, CA, June 4-6, 1994, Fusion Engineering and Design, Vols. 27-29 (parts A-C), March 1995. (ISSN: 0920-3796)Abdou, M. and the APEX Team, "Exploring Novel High Power Density Concepts for Attractive Fusion Systems," Fusion Engineering and Design, 45:145-167, 1999. (ISSN: 0920-3796)Advanced Limiter-Divertor Plasma-Facing Surfaces (ALPS) Argonne National Laboratory http://www.td.anl.gov/Programs/fusion/alps.htmlAdvanced Power EXtraction (APEX) Study University of CA, Los Angeles http://www.fusion.ucla.edu/APEX/Proceedings of the 17th IEEE/NPSS Symposium on Fusion Engineering, San Diego, CA, October 6-10, 1997, 2 Vols., Piscataway, NJ: IEEE, 1998. (ISBN: 0-7803-4226-7) (IEEE Catalogue No. 97CH36131) (Available from IEEE Service Center, 445 Hoes Lane Piscataway, NJ 08855. Telephone: 800-678-4333)U.S. DOE Fusion Energy Sciences Program http://www,ofe.er.doe.gov/ NOTE: The Solicitations listed on this site are copies from the various SBIR agency solicitations and are not necessarily the latest and most up-to-date. For this reason, you should always use the suggested link below. This will take you directly to the appropriate agency information where you can read the official version of the solicitation you are interested in. The official link for this page is: http://sbir.er.doe.gov/sbir/Solicitations/FY%202001/2001.htm. Solicitation closing date is February 20, 2001.