Effects of reaction heat and self-stress on the transport of hydrogen through metallic tubes under conditions far from equilibrium

Effects of reaction heat and self-stress on the transport of hydrogen through metallic tubes under conditions far from equilibrium
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远离平衡条件下反应热和自应力对金属管氢传输的影响

DOI:
10.1016/j.actamat.2004.08.038
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发表时间:
2004-12
期刊:
Acta Mater
影响因子:
--
通讯作者:
傅依备
傅依备
中科院分区:
其他
文献类型:
--
作者:
张武寿;侯民强;王和义;傅依备

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建立了氢在金属管中扩散的热力学模型。它包括金属-氢反应的焓变、热损失、反应速率和氢扩散系数对温度的依赖以及自应力效应等。该模型描述了35年来实验发现的氢气加注过程中,在上坡扩散和菲克扩散之前氢气的超快速扩散现象。讨论了压力和其他参数的影响。
A thermokinetic model of hydrogen diffusion across a metallic tube is established. It includes the enthalpy change of the metal–hydrogen reaction, heat losses, dependences of reaction rate and hydrogen diffusion coefficient on temperature, and self-stress effects, etc. A phenomenon, the super fast diffusion of hydrogen before the up-hill diffusion and Fickian diffusion during hydrogen gas charging process, which has been found experimentally for 35 years, is presented by this model. Effects of pressures and other parameters are discussed.
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