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Title: Electrochemical Hydrogen Permeability and Oxidation Characteristics of N-Ti-Ni Alloys

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United States

Citation Formats

MICKALONIS, JOHN. Electrochemical Hydrogen Permeability and Oxidation Characteristics of N-Ti-Ni Alloys. United States: N. p., 2006. Web.
MICKALONIS, JOHN. Electrochemical Hydrogen Permeability and Oxidation Characteristics of N-Ti-Ni Alloys. United States.
MICKALONIS, JOHN. Sun . "Electrochemical Hydrogen Permeability and Oxidation Characteristics of N-Ti-Ni Alloys". United States. doi:.
title = {Electrochemical Hydrogen Permeability and Oxidation Characteristics of N-Ti-Ni Alloys},
author = {MICKALONIS, JOHN},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}

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  • Ti-V-Cr bcc-type solid solution alloys can absorb a large amount of hydrogen and be applied to active materials of the negative electrode in Ni-MH batteries. However, because of the insolubility of Ni into these alloys, the electrochemical characteristics like discharge capacity and cycle life were poor. In order to increase the discharge capacity of hydrogen absorbing alloy electrodes, Ti-V-Cr bcc-type alloy powders were sintered with Ni in order to form Ni contained surface layer on the alloy surface. As sintering temperature rose up, the surface composition changed from TiNi to Ti{sub 2}Ni. TiNi surface layer showed better electrochemical characteristics. Formore » the Ni adding method, Ni electroless plating was preferred because of good adhesion. As a result of optimized conditions, a discharge capacity of 570 mAh/g and an improvement of cycle life were achieved.« less
  • Rapid degradation of Fe-Cr-Ni alloys may occur in mixed oxygen- and sulfur-containing environments at elevated temperatures unless a protective surface oxide scale can be formed and maintained. The present results indicate that alloy chemistry has a strong influence on the scaling behavior of a Fe-25% Cr-20% Ni-base alloy. The presence of Mn (which forms a stable sulfide at low sulfur potentials) or Ti (which permits high rates of oxide growth) may contribute to breakaway behavior, whereas the addition of either of two reactive elements, Zr or Nb, promotes protection by an oxide scale. Mechanisms to explain the effects of individualmore » elemental additions to the base alloy are discussed. 8 figures.« less
  • We report solvent and electrolyte effects on the electrocatalytic oxidation of H 2using Ni(P Cy 2N R' 2) 2(R' = Bn, tBu) complexes.
  • No abstract prepared.
  • Cross-section evaluations for three important dosimetry reactions were carried out on the basis of the results of recent comprehensive measurements. Evaluated curves are presented in analytical form in the whole energy range of interest - from effective threshold to 20 MeV. New evaluated cross-sections averaged in the {sup 252}Cf fission neutron spectrum are in somewhat better agreement with the recommended integral values in comparison with the IRDF-90 evaluations.