On the Microstructures of Steels at Elevated Temperatures

The superconducting properties (Te and J e ) were investigated by the resistivity measurement. and the structure was observed by a transmission electron microscopy in the dilute copper alloys containing small amounts of V lGa particles prepared by quenching from the liquid state and aging. No superconductivity could be observed at 4.2 K in as-quenched and/or in overaged samples. The highest Te2 (= 12.5 K). Tel ( = 9.6 K). and J e ( = 525 A/cm 2 ) were obtained by aging at 700·C for 96 h and corresponded with the structure of fine V lGa precipitates dispersed homogeneously in the copper matrix. Therefore. it is concluded that superconductivity in these alloys results from the superconducting path due to the proximity effect of the superconducting V lGa particles.

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Superconducting properties and microstructure in dilute copper alloys containing small amounts of V3Ga particles

Nagata

Hirayama

Noto

et al. 1977

Journal of Applied Physics

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On the Microstructures of Steels at Elevated Temperatures

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Superconducting properties and microstructure in dilute copper alloys containing small amounts of V3Ga particles

Superconducting properties and microstructure in dilute copper alloys containing small amounts of V3Ga particles

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