ORNL-1816 - the Molten Salt Energy Technologies Web Site

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4 . CRITICAL EXPERIMENTS ........................................... 52 Ref lector-Moderated Reactor .......................................... 52 PART II . MATERIALS RESEARCH 5 . CHEMISTRY OF MOLTEN MATERIALS ................................... 57 Phase Equilibrium Studies ............................................ 57 Solid phase studies in the NaF.Zr,.UF, system ............................. 57 Phase relationships in UF3-bearing systems ............................... 58 Solubility of UF, in NaF-KF-LiF eutectic ................................ 59 UF stability ................................................... 60 DifLential thermal analysis ......................................... 61 Chemical Reactions in Molten Salts ...................................... 61 Reduction of FeF, by H, in NaF.ZrF, systems ............................. 61 Reduction of UF, to UF, in fluoride melts ................................ 61 Electrochemistry of fused salts ....................................... 62 Stability of chromous and ferrous fluorides in molten fluorides ................... 63 Reduction of UF, by structural metals ................................... 64 Production of Purified rkiolten Fluorides ................................... 66 Electrolytic purification of zirconium-base fluorides .......................... 66 Fluoride production facility .......................................... 68 Alkali fluoride processing facility ..................................... 69 Purification of KF and RbF .......................................... 70 Preparation of various fluorides ....................................... 71 Chemis+ry of Alkali Hydroxides ........................................ 71 Purification of hydroxides .......................................... 71 Effect of additives on hydrogen pressure over NaOH-Ni system ................... 71 Fundamental Chemistry of Fused Salts .................................... 72 Solubility of xenon in fused salts ...................................... 72 X-ray diffraction studies in salt systems ................................. 72 Physical chemistry ............................................... 73 Viscosity measurements ............................................ 75 6 . CORROSION RESEARCH ............................................ 76 viii Thermal-Convection Loop Corrosion Studies ................................ 76 lnconel loop containing UF, in alkali-metal-base mixtures ...................... 76 Type 316 stainless steel loops containing UF, in alkali-metal-base mixtures ......... 76 Effect of induced potentials ......................................... 77 Hastelloy B thermal-convection loops ................................... 77 Special alloy thermal-convection loops .................................. 77 Sodi urn-beryl lium-lnconel Compatibility ................................... 78 Static Corrosion Studies ............................................. 80 Brazing alloys on stainless steel ...................................... 80 Grazing alloys on nickel ............................................. 80 Screening tests of carbides .......................................... 82 Magnesium-lithium alloy in water ...................................... 86 Rubidium Investigations ............................................. 87 U Y f .i
Fundamental Corrosion Research ....................................... 88 Mass transfer in liquid lead .......................................... Fused hydroxides as acid-base analog systems ............................. Flammability of alkali metal solutions at high temperatures ..................... Chemical Studies of Corrosion ......................................... Effect of temperature on the corrosion of lnconel melts with NiF, additions .......... 98 98 Effect on chromium additions on the corrosion of lnconel and fluoride melts with NiF, additions ................................................. Effect of chromium valence state on corrosion oi lnconel 98 7 . METALLURGYANDCERAMICS ....................................... 100 Development of Ni ckel-Mol ybdenum Base AI loys ............................. 100 Fabrication experiments ............................................ 100 New alloys .................................................... 102 Oxidation and oxidation protection ..................................... 103 Radiator fabrication .............................................. 103 88 92 96 ....................... 99 Welding ....................................................... Mechanical properties studies ........................................ Special Materials Fabrication ......................................... Duplex tubing .................................................. Boron carbide shielding ............................................ Tubular fuel elements ............................................. Control rods ................................................... AI.UO, elements for shielding experiment ................................ Brazing Alloy Development ........................................... Heat Exchanger Fabrication ........................................... Beryllium Oxide Fuel Elements ........................................ 8 . HEAT TRANSFER AND PHYSICAL PROPERTIES ........................... Fused Salt Heat Transfer ............................................ in-Pile Loop Heat Exchanger Analysis ................................... Free Convection Fluids with Volume Heat Sources .......................... Heaf Transfer Effectiveness of Reactor Coolants ............................. ART Core Hydrodynamics ............................................ ART Heat Transfer .......................... ...................... nts ................ ...................... Heat capacity ............................. ...................... ......................... ...................... ...................... 104 106 107 107 107 108 108 108 108 109 111 112 112 112 113 114 114 115 116 116 117 117 9 . ...... MTR Static Corrosion Tests ..................... ....... . ..~ . . . . . . ... i. ...... . > . . Effect of Irradiation on UF.C.F. ............. ...................... Miniature Loop ........................ ...................... Benchtest ..................................................... Heat transfer calculations ........................................... 121 122 122 122 . . ix
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