Manufacture of Nb3Al Short Wires by RHQT Method Using a Newly Designed Apparatus

Chuan Chen; Zhi Ming Bai; Ping Xiang Zhang

doi:10.4028/www.scientific.net/AMR.834-836.1638

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 834-836Manufacture of Nb3Al Short Wires by RHQT Method...

Manufacture of Nb₃Al Short Wires by RHQT Method Using a Newly Designed Apparatus

Abstract:

A new apparatus is designed and fabricated for rapid heating and quenching (RHQ) process of Nb/Al precursor short wires. As the primary step, Nb/Al precursor with large Nb/Al filaments is manufactured through rod-in-tube (RIT) method to study the RHQ parameters. This apparatus could heat Nb/Al precursor short wire up to about 2000 °C in 10 ms-100 ms and then quench the wire into molten gallium. Results of line scan from SEM-EDS show that Nb₃Al is formed in short wires. Tests show that the zero-resistance temperature of Nb₃Al short wire is about 17.7 K, which also indicates that stoichiometric Nb₃Al is formed. However, the critical current (I_C) is only 1.8 A at 10.2 K. The low I_C can be explained by the low volume ratio of superconducting Nb₃Al and lots of voids along the wire. Further optimization and improvements will be performed.

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Periodical:

Advanced Materials Research (Volumes 834-836)

Pages:

1638-1641

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.834-836.1638

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Online since:

October 2013

Authors:

Chuan Chen, Zhi Ming Bai*, Ping Xiang Zhang

Keywords:

Nb₃Al, RHQT, Superconductor

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