Oxford Superconducting Technology

Bruker Ost LLC

Maarten Meinesz

Michael Field

Jeff Parrell

Seung Hong

Seungok Hong

Youzhu Zhang

Hanping Maio

Huang Yibing

Field Michael

A method for successfully heat treating magnet coils of braided BiSrCaCuO(Bi-2212) strand. The Bi-2212 coil is fabricated using standard round wire powder-in-tube techniques, and braided with a ceramic-glass braid with integrated carbonaceous binder. The coil is heated in an atmosphere controlled furnace below the high current density phase reaction sequence to burn off the carbonaceous binder and evacuated to remove unwanted gases from the inner windings. The oxygen environment is then reintroduced and the coil is heat treated to the high Jreaction temperature and then processed as normal. As the local atmosphere around the surface of the wire, particularly the concentration of oxygen, is critical to a successful reaction sequence, high current Bi-2212 coils can thereby be obtained.

Manufacture of high temperature superconductor coils

Growing community of inventors

Parlin, NJ, United States of America

Maarten Meinesz