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RECENT PROGRESS IN SECOND-GENERATION HTS WIRE TECHNOLOGY AT SUPERPOWER

Published online by Cambridge University Press:  01 February 2011

Yimin Chen
Affiliation:
ychen@superpower-inc.com, Superpower Inc,450 Duane Ave, Schenectady, NY, 12304, United States, 5183461414, 5183466080
Xuming Xiong
Affiliation:
xxiong@superpower-inc.com, SuperPower Inc, 450 Duane Ave, Schenectady, NY, 12304, United States
Yiyuan Xie
Affiliation:
yxie@superpower-inc.com, SuperPower Inc, 450 Duane Ave, Schenectady, NY, 12304, United States
Yunfei Qiao
Affiliation:
yqiao@superpower-inc.com, SuperPower Inc, 450 Duane Ave, Schenectady, NY, 12304, United States
Xun Zhang
Affiliation:
xzhang@superpower-inc.com, SuperPower Inc, 450 Duane Ave, Schenectady, NY, 12304, United States
Andrei Rar
Affiliation:
arar@superpower-inc.com, SuperPower Inc, 450 Duane Ave, Schenectady, NY, 12304, United States
Maxim Martchevskii
Affiliation:
mmarchevskii@superpower-inc.com, SuperPower Inc, 450 Duane Ave, Schenectady, NY, 12304, United States
Robert Schmidt
Affiliation:
rschimit@superpower-inc.com, SuperPower Inc, 450 Duane Ave, Schenectady, NY, 12304, United States
Kenneth Lenseth
Affiliation:
klenseth@superpower-inc.com, SuperPower Inc, 450 Duane Ave, Schenectady, NY, 12304, United States
John Herrin
Affiliation:
jherrin@superpower-inc.com, SuperPower Inc, 450 Duane Ave, Schenectady, NY, 12304, United States
Drew Hazelton
Affiliation:
dhazelton@superpower-inc.com, SuperPower Inc, 450 Duane Ave, Schenectady, NY, 12304, United States
Venkat Selvamanickam
Affiliation:
selva@superpower-inc.com, SuperPower Inc, 450 Duane Ave, Schenectady, NY, 12304, United States
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Abstract

We report recent progress in 2G-HTS wire technology at Superpower Inc. The throughputs of 4mm-wide tape have reached 750m/h for sputtering AlO3+Y2O3 base layer, 360m/h for IBAD MgO template, 345m/h for sputtering Homo-epi MgO+LMO buffer, 180m/h for MOCVD REBCO. Critical current (Ic) of 813A/cm-width at 77K and self-field has been achieved on 1 meter length of 12mm-wide tape in which the thickness of GdYBCO film is 3.3 microns. Ic in a magnetic field has been significantly improved through composition modification, doping and MOCVD condition optimization. Ic of 185.6A/cm-width at 77K and 1Tesla has been obtained. For Ic on long lengths, 314A/cm-width on 202m, 221A/cm-width on 610m and 170A/cm-width on 935m have been achieved. A coil of 19.1mm diameter we made with our 2G wires generated 26.8T magnetic field in the magnet. A 30m-long cable made with nearly 10,000 meters of Superpower 2G wires showed excellent overall performance and has been installed and energized in the power grid.

Type
Research Article
Copyright
Copyright © Materials Research Society 2008

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References

1 Shiohara, Y, Yoshizumi, M, Izumi, T and Yamada, Y, Supercond. Sci. Technol. 21, 034002 (2008).CrossRefGoogle Scholar
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3 Barnes, P. Int. J. Appl. Ceram. Technol., 4, 242249 (2007)CrossRefGoogle Scholar
4 Haught, Debbie, Daley, Jim, Bakke, Paul, and Marchionini, Brian, Int. J. Appl. Ceram. Technol, 4, 197202 (2007)CrossRefGoogle Scholar
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RECENT PROGRESS IN SECOND-GENERATION HTS WIRE TECHNOLOGY AT SUPERPOWER
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