27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Enhanced critical current densities in Nb3Sn superconducting strands prepared by bronze process

28 Aug 2017, 13:15
1h 45m
Posters Area

Posters Area

Poster Presentation of 1h45m F1 - Low-Tc Wires and Cables Mon-Af-Po1.08

Speaker

Dr Ke Zhang (Western Superconducting Technologies Co. Ltd.)

Description

In the past much of the emphasis in the development of Nb3Sn superconducting strands has been on improving the non-Cu critical current density (Jc). Different design Nb3Sn strands were manufactured by the bronze route artificially doped with titanium in bronze. The influences of bronze to Nb volume ratio, filament diameter and Ti content were studied.Bronze to Nb volume ratio affected Jc largely for the different Nb3Sn volume formed after heat treatment. The study of filament diameter on Jc indicates that Jc increases small with the filament diameter increases. Ti diffused into Nb filament when temperature is higher than 340℃ and no Ti element has been found in the Cu-Sn matrix after heat treatment.Results shows that Ti content had weak influence on Jc.Microstructure images show that residual Nb core can be seen in each filament. The Nb3Sn grains are almost equiaxed and uniform in size.

Submitters Country China

Primary author

Dr Ke Zhang (Western Superconducting Technologies Co. Ltd.)

Co-authors

Mr Xing Qin (Western Superconducting Technologies Co. Ltd.) Mrs Huixian Gao (Western Superconducting Technologies Co. Ltd.) Mr Yigong Shi (Western Superconducting Technologies Co. Ltd.) Dr Bo Wu (Western Superconducting Technologies Co. Ltd.) Dr Jianwei Liu (Western Superconducting Technologies Co. Ltd.) Dr Jianfeng Li (Western Superconducting Technologies Co. Ltd.) Prof. Pingxiang Zhang (Western Superconducting Technologies Co. Ltd.) Prof. Xianghong Liu (Western Superconducting Technologies Co. Ltd.) Prof. Yong Feng (Western Superconducting Technologies Co. Ltd.)

Presentation Materials