TY - JOUR
T1 - Processing for long YBCO coated conductors by TFA-MOD process
AU - Fuji, Hiroshi
AU - Honjo, Tetsuji
AU - Teranishi, Ryo
AU - Tokunaga, Yoshitaka
AU - Shibata, Junko
AU - Izumi, Teruo
AU - Shiohara, Yuh
AU - Iijima, Yasuhiro
AU - Saitoh, Takashi
N1 - Funding Information:
This work is supported by the new Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications.
PY - 2003/10
Y1 - 2003/10
N2 - The metal organic deposition (MOD) process of YBa2Cu 3O7-X (YBCO) using metal trifluoroacetate (TFA) precursors is considered to be a strong candidate as a low cost fabrication process in coated conductors since the TFA-MOD process is a non vacuum process and can provide high Jc films. In order to develop long tape conductors using this process, the influence of the gas flow direction in the heat treatment was investigated. The Jc value decreases toward to leeward side in the case of the parallel gas flow condition. On the other hand, in the case of the perpendicular gas flow condition. The Jc value reveals uniformity in all over the tape and the high Jc level is maintained. In the case of long tape production, it was found that the perpendicular gas flow to the tape length is effective to fabricate the uniform films. It could minimize the influence of consumption of H2O and generation of HF gas in the up-stream area to the leeward region. The J c and Ic properties and these distribution of the YBCO tape fabricated by this method on CeO2/IBAD-Gd2Zr 2O7/Hastelloy is presented. Furthermore, a large scale equipment for the continues long tape process was developed based on the above findings. Consequently we have fabricated a 1 m long Y123 tape conductor by a reel to reel system. Even in the first trial, the uniform reaction for the entire length was recognized.
AB - The metal organic deposition (MOD) process of YBa2Cu 3O7-X (YBCO) using metal trifluoroacetate (TFA) precursors is considered to be a strong candidate as a low cost fabrication process in coated conductors since the TFA-MOD process is a non vacuum process and can provide high Jc films. In order to develop long tape conductors using this process, the influence of the gas flow direction in the heat treatment was investigated. The Jc value decreases toward to leeward side in the case of the parallel gas flow condition. On the other hand, in the case of the perpendicular gas flow condition. The Jc value reveals uniformity in all over the tape and the high Jc level is maintained. In the case of long tape production, it was found that the perpendicular gas flow to the tape length is effective to fabricate the uniform films. It could minimize the influence of consumption of H2O and generation of HF gas in the up-stream area to the leeward region. The J c and Ic properties and these distribution of the YBCO tape fabricated by this method on CeO2/IBAD-Gd2Zr 2O7/Hastelloy is presented. Furthermore, a large scale equipment for the continues long tape process was developed based on the above findings. Consequently we have fabricated a 1 m long Y123 tape conductor by a reel to reel system. Even in the first trial, the uniform reaction for the entire length was recognized.
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U2 - 10.1016/S0921-4534(03)01149-3
DO - 10.1016/S0921-4534(03)01149-3
M3 - Conference article
AN - SCOPUS:0042284073
VL - 392-396
SP - 905
EP - 908
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - PART 2
T2 - Proceedings of the 15th International Symposium on Superconduc
Y2 - 11 November 2002 through 13 November 2002
ER -