Hydrogen diffusion in disordered metals and alloys
Institute of Metal Physics, Ural Division of the Russian Academy of Sciences, ul. S Kovalevskoi 18, Ekaterinburg, 620219, Russian Federation
The state of the art of research into the diffusion of
hydrogen in metallic systems with chemical and crystalline
disorder is reviewed. The physical principles and capabilities
of existing experimental methods for studying hydrogen diffusion in equilibrium and nonequilibrium conditions are discussed.
The current theoretical understanding of and approaches to the
problem are critically analyzed. Based on the authors’ original research, a quite general formalism is proposed for describing hydrogen diffusion on disordered media, which allows the analytical solution of the problem and — very importantly -
enables diffusion and structural data to be used to identify the
structure of amorphous and nanocrystalline alloys.