Influence of Ge addition on phase formation and electromagnetic properties in internal tin processed Nb3Sn wires

D. W. Ha, S. S. Oh, H. S. Ha, N. J. Lee, R. K. Ko, Y. K. Kwon, K. S. Ryu, Hong Koo Baik

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

In order to investigate the effect of Ge addition to the Cu matrix on the microstructure and the critical current density, four kinds of internal tin processed Nb3Sn strands with pure Cu and Cu - 0.2, 0.4, 0.6 wt% Ge alloys were drawn to 0.8 mm diameter. The microstructure and critical current of internal tin processed Nb3Sn wires that were heat treated at temperatures ranging from 680°C for 240 h were investigated. The Ge addition to the matrix did not make workability worse. A Ge rich layer in the Cu-Ge matrix suppressed the growth of the Nb3Sn layer and promoted grain coarsening. The greater the Ge content in the matrix, the lower the net Jc result after Nb3Sn reaction heat treatment. There was no significant variation in Jc observed with heat treatment temperature ranging from 680°C to 740°C.

Original languageEnglish
Pages (from-to)3565-3568
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume11
Issue number1 III
DOIs
Publication statusPublished - 2001 Mar 1
Event2000 Applied Superconductivity Conference - Virginia Beach, VA, United States
Duration: 2000 Sep 172000 Sep 22

Fingerprint

Tin
electromagnetic properties
tin
Heat treatment
wire
Wire
Microstructure
Critical currents
Coarsening
matrices
critical current
heat treatment
Temperature
microstructure
strands
current density
heat
temperature
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Ha, D. W. ; Oh, S. S. ; Ha, H. S. ; Lee, N. J. ; Ko, R. K. ; Kwon, Y. K. ; Ryu, K. S. ; Baik, Hong Koo. / Influence of Ge addition on phase formation and electromagnetic properties in internal tin processed Nb3Sn wires. In: IEEE Transactions on Applied Superconductivity. 2001 ; Vol. 11, No. 1 III. pp. 3565-3568.
@article{1c5217ed1c2243208498b8fe13ca07a5,
title = "Influence of Ge addition on phase formation and electromagnetic properties in internal tin processed Nb3Sn wires",
abstract = "In order to investigate the effect of Ge addition to the Cu matrix on the microstructure and the critical current density, four kinds of internal tin processed Nb3Sn strands with pure Cu and Cu - 0.2, 0.4, 0.6 wt{\%} Ge alloys were drawn to 0.8 mm diameter. The microstructure and critical current of internal tin processed Nb3Sn wires that were heat treated at temperatures ranging from 680°C for 240 h were investigated. The Ge addition to the matrix did not make workability worse. A Ge rich layer in the Cu-Ge matrix suppressed the growth of the Nb3Sn layer and promoted grain coarsening. The greater the Ge content in the matrix, the lower the net Jc result after Nb3Sn reaction heat treatment. There was no significant variation in Jc observed with heat treatment temperature ranging from 680°C to 740°C.",
author = "Ha, {D. W.} and Oh, {S. S.} and Ha, {H. S.} and Lee, {N. J.} and Ko, {R. K.} and Kwon, {Y. K.} and Ryu, {K. S.} and Baik, {Hong Koo}",
year = "2001",
month = "3",
day = "1",
doi = "10.1109/77.919834",
language = "English",
volume = "11",
pages = "3565--3568",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "1 III",

}

Influence of Ge addition on phase formation and electromagnetic properties in internal tin processed Nb3Sn wires. / Ha, D. W.; Oh, S. S.; Ha, H. S.; Lee, N. J.; Ko, R. K.; Kwon, Y. K.; Ryu, K. S.; Baik, Hong Koo.

In: IEEE Transactions on Applied Superconductivity, Vol. 11, No. 1 III, 01.03.2001, p. 3565-3568.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Influence of Ge addition on phase formation and electromagnetic properties in internal tin processed Nb3Sn wires

AU - Ha, D. W.

AU - Oh, S. S.

AU - Ha, H. S.

AU - Lee, N. J.

AU - Ko, R. K.

AU - Kwon, Y. K.

AU - Ryu, K. S.

AU - Baik, Hong Koo

PY - 2001/3/1

Y1 - 2001/3/1

N2 - In order to investigate the effect of Ge addition to the Cu matrix on the microstructure and the critical current density, four kinds of internal tin processed Nb3Sn strands with pure Cu and Cu - 0.2, 0.4, 0.6 wt% Ge alloys were drawn to 0.8 mm diameter. The microstructure and critical current of internal tin processed Nb3Sn wires that were heat treated at temperatures ranging from 680°C for 240 h were investigated. The Ge addition to the matrix did not make workability worse. A Ge rich layer in the Cu-Ge matrix suppressed the growth of the Nb3Sn layer and promoted grain coarsening. The greater the Ge content in the matrix, the lower the net Jc result after Nb3Sn reaction heat treatment. There was no significant variation in Jc observed with heat treatment temperature ranging from 680°C to 740°C.

AB - In order to investigate the effect of Ge addition to the Cu matrix on the microstructure and the critical current density, four kinds of internal tin processed Nb3Sn strands with pure Cu and Cu - 0.2, 0.4, 0.6 wt% Ge alloys were drawn to 0.8 mm diameter. The microstructure and critical current of internal tin processed Nb3Sn wires that were heat treated at temperatures ranging from 680°C for 240 h were investigated. The Ge addition to the matrix did not make workability worse. A Ge rich layer in the Cu-Ge matrix suppressed the growth of the Nb3Sn layer and promoted grain coarsening. The greater the Ge content in the matrix, the lower the net Jc result after Nb3Sn reaction heat treatment. There was no significant variation in Jc observed with heat treatment temperature ranging from 680°C to 740°C.

UR - http://www.scopus.com/inward/record.url?scp=0035268254&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035268254&partnerID=8YFLogxK

U2 - 10.1109/77.919834

DO - 10.1109/77.919834

M3 - Conference article

VL - 11

SP - 3565

EP - 3568

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 1 III

ER -