Boots – shoes – and leggings
Patent
1994-09-13
1996-05-14
Ramirez, Ellis B.
Boots, shoes, and leggings
364499, G01N 700, G06F 1900
Patent
active
055174256
ABSTRACT:
The plateau region of P-C-T isotherm of a hydrogen absorbing alloy between the .alpha. phase region and .beta. phase region thereof is expressed by a normal cumulative distribution function wherein hydrogen content X is taken as frequency and the logarithm of equilibrium hydrogen pressure as a random variable. Parameters such as standard deviation .sigma. of the function are determined by numerical analysis based on measured data as to the equilibrium hydrogen pressure and hydrogen content of the plateau region of the alloy to be evaluated. Whether the equilibrium characteristics of the alloy are acceptable is determined using the parameters as evaluation criteria.
REFERENCES:
Oates, "Thermodynamic Properties of the Pd-H System", Journal of the Less-Common Metals, 88, pp. 411-424, The Netherlands, 1982.
Flangan et al., "Hysteresis in Metal Hydrides", Journal of the Less-Common Metals, 83, pp. 127-141, The Netherlands, 1982.
"A Numerical Method for the P-C-T Properties of Metal Hydrides", H. Bjurstrom et al., Journal of the Less-Common Metals, vol. 130, Mar. 1, 1978, pp. 365-370.
"A Theoretical Formula for the Solubility of Hydrogen in Palladium", John R. Lacher, Proceedings of the Royal Society of London (Series A-Mathematical and Physical Sciences), vol. 161, Aug. 20, 1937, pp. 525-545.
Fujitani et al., "Formulation for Pressure Composition Isotherms of Hydrogen in Hydrogen Absorbing Rare Earth-Ni Alloys/Y, Mn Substitution Effect of Hydrogen Equilibrium Characteristics of Hydrogen-Absorbing Rare Earth-Nickel Alloys", Journal of the Japan Institute of Metals, V. 56, N. 8, 1992 pp. 965-972.
Fujitani Shin
Furukawa Akio
Saito Toshihiko
Yonezu Ikuo
Kemper M.
Ramirez Ellis B.
Sanyo Electric Co,. Ltd.
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