CEC-ICMC 2017 - Abstracts, Timetable and Presentations

Session

M2OrF - MgB2 Wires and Tapes: Processing & Properties

M2OrF

11 Jul 2017, 15:00

Hall of Ideas - EH

Conveners

M2OrF - MgB2 Wires and Tapes: Processing & Properties

• Michael Susner (U.S. Air Force Research Laboratory)
• David Cardwell (University of Cambridge)

114. Development of MgB2 superconductor wire and coils for practical applications at Hyper Tech Research

Mr Michael Tomsic (Hyper Tech Research)

11/07/2017, 15:30

Contributed Oral Presentation

Hyper Tech Research will report on progress that has been made on developing magnesium diboride superconductor wires, coils and magnets for commercialization efforts, with a specific emphasis on conduction cooled MRI and AC motor/generator applications.

246. [Invited] Transport properties of IMD-processed 100 m class 6-filament MgB2 wire and solenoid coil

Dr Dongliang Wang (Institute of Electrical Engineering, CAS)

11/07/2017, 15:45

Invited Oral Presentation

100 m long 6-filament MgB2 wire was successfully fabricated using internal magnesium diffusion (IMD) process [1]. We investigated the transport properties and the uniformity of this long multifilament IMD wire. The MgB2 layer and the sub-filament region are regular, and the Jc values have a fairly homogenous distribution throughout the wire, suggesting that there were no obvious defects along...

505. Effect of Carbon and Dy2O3 co-doping on the Critical Field and Transport of MgB2 wires

Fang Wan (The Ohio State University)

11/07/2017, 16:15

Contributed Oral Presentation

It has been found that Dy2O3 doping can enhance critical current density Jc, especially at high temperature (10 K to 30 K), without changing the transition temperature Tc or upper critical magnetic field Bc2 of MgB2. However, it is interestingly noted that the irreversibility field µ0Hirr of the MgB2 sample was increased by Dy2O3 doping. In this paper, the mechanism of the Dy2O3 doping on the...

385. Structure and superconducting characteristics of magnesium diboride; substitution of boron atoms to oxygen and carbon.

Prof. Tatiana Prikhna (Institute for Superhard Materials of the National Academy of Sciences of Ukraine)

11/07/2017, 16:30

Contributed Oral Presentation

As indicated by SEM and Auger analysis, a sizeable amount of oxygen is usually present in superconducting MgB2-based materials (bulks, thin films, and wires). The established correlations between the characteristics of MgB2-based superconducting materials and their structural features, in particular the oxygen distribution and content are under the consideration. The matrix phase of bulk MgB2...

584. The Development of Persistent joints for MgB2 Conductors

Chris Kovacs (The Ohio State University)

11/07/2017, 16:45

Contributed Oral Presentation

Persistent joints using in-situ multifilamentary MgB2 wires have been developed. The joints were made using MRI style MgB2 wire. In order to test a joint, the wire was wound into a one turn coil and then connected by the place outside and away from the single turn coil. A hall sensor was placed in the coil to measure the field of the single turn as well as the decay of that field. After...

506. Doping Effect of Dy2O3 on the Phase Formation in the MgB2 Wire Prepared by Advanced Internal Magnesium Infiltration (AIMI) Method

Fang Wan (The Ohio State University)

11/07/2017, 17:00

Contributed Oral Presentation

The formation of the AIMI MgB2 wire is based on the infiltration of Mg into B powder layer at 650 °C to 675 °C. This study focused on the effect of oxide dopants on the MgB2 phase formation during the diffusion of Mg into the B powder layer. In Dy2O3 doped MgB2 AIMI wires, Dy2O3 reacted with melting Mg to form DyB4 and MgO during heat treatment. The unreacted Dy2O3, DyB4 and MgO have the...