Diffusion of hydrogen in cubic Laves phase Ho1−xMmxCo2 (x = 0, 0.2 and 0.4) alloys
作者： G SRINIVAS , V SANKARANARAYANAN , S RAMAPRABHU
DOI: 10.1016/J.IJHYDENE.2007.01.003
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摘要: Abstract The diffusion of hydrogen in cubic (C15-type) Laves phase Ho 1 - x Mm Co 2 ( = 0 , 0.2 and 0.4, mischmetal ) alloys was measured the α -phase (solid solution) region over temperature range 500 – 800 ∘ C using Sieverts-type apparatus. its hydrides have been characterized by powder X-ray diffraction (XRD) Rietveld method. constants determined from gas–solid reaction, where gas pressure dependence on time has at fixed temperature. results discussed basis Fick's law diffusion. constant alloy composition initial evaluated. Activation energy is obtained Arrhenius relation.
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