Effect of Isothermal on the Heat Treatment of Ag/Bi2212 Superconducting Tapes

Antonio Renato Bigansolli; D. Rodrigues Jr.

doi:10.4028/www.scientific.net/MSF.899.400

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HomeMaterials Science ForumMaterials Science Forum Vol. 899Effect of Isothermal on the Heat Treatment of...

Effect of Isothermal on the Heat Treatment of Ag/Bi2212 Superconducting Tapes

Abstract:

Tapes of Ag/Bi2212 (Bi₂Sr₂CaCu₂O₈₊_δ) have been revealed as promising materials for superconducting applications at low temperatures (4.2 K using liquid helium or 20 K using a cryocooler) and high fields (above 10 T). The reaction and formation of phases are related to the ceramic densification and to the alignment of the grains, important for the improvement of the superconductor transport properties. In the present work, it is analyzed the influence of long isotherms at the temperature of 830 °C on the superconducting properties of Ag/Bi2212 samples. The heat treatments consisted of the use of two maximum temperatures of treatment (890 °C and 905 °C), with two different soaking times, both with an annealing isotherm at 830 °C for 5 h, 30 h, and 50 h.

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Periodical:

Materials Science Forum (Volume 899)

Pages:

400-405

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.899.400

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Online since:

July 2017

Authors:

Antonio Renato Bigansolli*, D. Rodrigues Jr.

Keywords:

Bi2212, Critical Currents, Heat Treatment, Superconducting Tapes

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References

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