Effect of the Addition of Oxygen on the Structure and Superconducting Properties of Zirconium—Niobium Alloys
The effect of traces of oxygen on the critical current density of Zr-26-33%Nb alloys is studied. After cold working the critical current of the alloys containing oxygen only slightly exceeds that of oxygen-free alloys, whereas after heat treatment there is a much greater difference. The rise of critical current in alloys containing oxygen is associated with the effect of the precipitation of the O-stabilized α-phase, which differs sharply in superconducting properties from the matrix.
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