The Influence of Dissolved Hydrogen on the Superconducting Properties of Molybdenum
Baldwin1 found that molybdenum becomes brittle on addition of dissolved hydrogen and exhibits ductility curves typical of the alloys of hydrogen with bcc transition metals. The popular theories2 of “hydrogen embrittlement” associate this interesting phenomenon with one or more of the following mechanisms: stresses due to hydrogen gas precipitation in voids and cracks; the reduction of surface free energy on hydrogen adsorption; reduced cohesive energy on hydrogen solution. All these theories are based essentially on the observed mechanical properties. We undertook a study of the influence of dissolved hydrogen on the superconducting properties of molybdenum to obtain information about the effects of interstitial hydrogen on the electronic properties of the host metal and their correlation with its mechanical behavior.
KeywordsHydrogen Embrittlement Critical Field Hydrogen Diffusion Superconducting Property Hydrogen Solution
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