Furukawa Electric Co. / SuperPower Inc.

Product Overview

SuperPower’s 2G HTS tape is a high-temperature superconducting conductor consisting of multiple buffer layers, a REBCO superconducting layer, a silver protective layer, and a copper stabilizer deposited on a high-strength Hastelloy® substrate. The buffer layers prevent the diffusion of elements from the Hastelloy substrate and provide the critical preferential texture required for the growth of the REBCO superconducting layer. The silver layer protects the superconducting layer and provides good electrical contact. The copper stabilizer is an important component that provides electrical and thermal stability and protects the tape in the event of a quench.

For 2G HTS AP tape, zirconium is added into the precursor for the deposition of the REBCO superconducting layer by metal-organic chemical vapor deposition [MOCVD] to form columnar BZO (BaZrO₃) structures within the superconducting layer. These BZO columnar structures act as artificial pinning centers and contribute to improved current-carrying performance in magnetic fields.

The critical current of REBCO 2G HTS tape depends on the operating temperature, magnetic field strength, and the orientation of the magnetic field relative to the tape surface. When selecting a tape for a particular application, it is therefore important to consider not only the operating current but also the operating temperature, magnetic field strength, and magnetic field angle.

The tape is initially manufactured in a width of 12 mm and can be slit to widths of 2 mm, 3 mm, 4 mm, or 6 mm, depending on the application. Hastelloy substrate thicknesses of 30 µm and 50 µm are available. Copper stabilizer thicknesses ranging from approximately 5 µm to 55 µm per side are available. Please contact us for information on available specifications, manufacturable piece lengths, and lead times.

SuperPower Inc. is engaged in the development and manufacturing of second-generation high-temperature superconducting wire (2G HTS tape). The company has established technologies for manufacturing long-length 2G HTS tape and for evaluating critical current characteristics along the tape length using transport current measurements and non-contact magnetization measurements.

About company

The Furukawa Electric Group develops and manufactures both high-temperature and low-temperature superconducting wires. SuperPower Inc. develops and manufactures second-generation high-temperature superconducting wire (2G HTS tape) and has expertise in the production of long-length 2G HTS tape and evaluation of critical current characteristics along the tape length using transport current and non-contact magnetization measurements. Furukawa Electric Co., Ltd. develops and manufactures NbTi and Nb3Sn low-temperature superconducting wires.

Contact in Japan

References

• SuperPower 2G HTS Wire Specification