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1 Journal of Achievements in Materials and Manufacturing Engineering

1 2008

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The electric double layer in hydriding metals

Jamroziak K., Jargulinski W., Szelka J.

Journal of Achievements in Materials and Manufacturing Engineering

2008

Vol. 31, nr 2

678-682

Purpose: The effect of penetration hydrogen into fatigue load metals is widely investigated by many researchers. Hydrogen is the chemical element which plays negative role in fatigue durability of structures. It decides on fatigue brittle cracking. In the paper authors carry out an analysis of fatigue durability. Making use of naturally coming into existence the electric double layer phenomenon authors discussed the model of absorbing hydrogen into fatigue gap. Design/methodology/approach: A proposed model of the mechanism of hydrogen absorption by metal was based on particle hydrogen and water vapor from the air. Findings: It assumes that the EDL has crucial role in intercepting of polar dipole particles of hydrogen and water's vapor, especially in an already formed fatigue micro-gaps and gaps by effects of its electrostatic attraction force. The authors assume that the main source of hydrogen is water's vapor, and number of hydrogen dipoles is negligible. Practical implications: The problems of metals fragility/durability were also discussed in other papers in which author mainly tried to develop new methods of materials production with the consideration of assumed fatigue durability. Originality/value: Currently, in progress are works on proposing a model for hydrogen absorption by metal. Such approach to optimization in production and development of the new technologies is an essence of modern constructions that work in all variety of mechanical stress conditions.