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Park, Jong-Wan 2014-12-16T20:52:00Z 2014-12-16T20:52:00Z 10000-01-01 1985 1985 Solid-state electrochemical measurements using alternative experimental procedures were made with the double cell Ni + NiO(VBAR)ZrO(,2) + Y(,2)O(,3)(VBAR)Ni or Pd(VBAR)ZrO(,2) + Y(,2)O(,3)(VBAR)Ni + NiO to determine the kinetic and thermodynamic functions of oxygen in solid nickel and palladium. Non-steady state diffusion of oxygen in the specimen was caused by applying a preselected potential between the reference and specimen electrodes and was monitored by measuring time-dependent potentials and/or currents. The following results were obtained for the diffusivities and terminal solubilities of oxygen in nickel and palladium: D (Ni) = 4.9 x 10('-2) exp(-((164 kJ/mole)/RT)) cm('2)/sec (850-1400(DEGREES)C); C(,o)('s) (Ni) = 9.1 exp(-((56 kJ/mole)/RT)) at% (800-1000(DEGREES)C); D (Pd) = 1.03 x 10('-5) exp(-((98 kJ/mole)/RT)) cm('2)/sec (900-1150(DEGREES)C); C(,o)('s)(Pd) = 5.4 x 10('-2) exp(-((117 kJ/mole)/RT)) at% (900-1150(DEGREES)C). Using single galvanic cells with zirconium sinks, the diffusivities of oxygen in Nb-V alloys were measured. Vanadium atoms trap oxygen more strongly in niobium than niobium atoms do in vanadium. The trap energy does not appear to depend on the substitutional concentration, up to 10 at%. An attempt was made to find correlations between the kinetic and thermodynamic behavior of oxygen in Nb-V alloys. Made available in DSpace on 2014-12-16T20:52:00Z (GMT). No. of bitstreams: 1 8511656.pdf: 3657236 bytes, checksum: 7340bb6dad319fa7193ee55a9e9f0dfa (MD5) Previous issue date: 1985 Embargo set by: Seth Robbins for item 71984 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 138 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1985. http://hdl.handle.net/2142/71818 (UMI)AAI8511656 Engineering, Metallurgy The Kinetics and Thermodynamics of Oxygen in Nickel, Palladium, and Niobium-Vanadium Solid Solutions (Diffusion, Solubility, Electrochemistry) text University of Illinois at Urbana-Champaign Dissertation Ph.D. Metallurgy and Mining Engineering Metallurgical Engineering