TY - JOUR
T1 - Imperfection of microstructural control in MgB2 superconducting tapes fabricated using an in-situ powder-in-tube process
T2 - Toward practical applications
AU - Hata, S.
AU - Sosiati, H.
AU - Shimada, Y.
AU - Matsumoto, A.
AU - Ikeda, K.
AU - Nakashima, H.
AU - Kitaguchi, H.
AU - Kumakura, H.
N1 - Funding Information:
Acknowledgements The electron microscopy observations in this study were carried out at Research Laboratory for High Voltage Electron Microscopy in Kyushu University, in the framework of the ‘‘Nanotechnology Network,’’ sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. This study was also partly supported by Grants-in-Aid by JSPS and MEXT, Japan. The authors would like to express their sincere gratitude to Prof. Hiroyasu Saka for his kind invitation to submit this paper to the Special Issue of ‘‘EM in Industry.’’ The author would also like to thank Tetsuya Ohashi, Naoya Yuzuriha, and Takeshi Yoshidome for their kind help with the electron microscopy observations.
PY - 2013/1
Y1 - 2013/1
N2 - MgB2 is a promising superconductor for future applications to superconduct wires and tapes used at the liquid hydrogen temperature (20 K). Because the maximal superconducting current (critical current) in MgB 2 depends on its microstructure, an "in-situ" process to fabricate MgB2 based on a reaction between Mg and B is effective in controlling the microstructure. However, the critical current in the fabricated MgB2 wires and tapes is not sufficiently high for practical use. This may be attributed to the imperfectness of the microstructural control in MgB2 wires and tapes. In this paper, we will discuss the microstructural features of MgB2 tapes fabricated using a typical in-situ powder-in-tube process. By observing the early stage of microstructural evolution in detail, we can gain insights into the next strategy for improving the microstructure of MgB2 tapes with respect to their applications.
AB - MgB2 is a promising superconductor for future applications to superconduct wires and tapes used at the liquid hydrogen temperature (20 K). Because the maximal superconducting current (critical current) in MgB 2 depends on its microstructure, an "in-situ" process to fabricate MgB2 based on a reaction between Mg and B is effective in controlling the microstructure. However, the critical current in the fabricated MgB2 wires and tapes is not sufficiently high for practical use. This may be attributed to the imperfectness of the microstructural control in MgB2 wires and tapes. In this paper, we will discuss the microstructural features of MgB2 tapes fabricated using a typical in-situ powder-in-tube process. By observing the early stage of microstructural evolution in detail, we can gain insights into the next strategy for improving the microstructure of MgB2 tapes with respect to their applications.
UR - http://www.scopus.com/inward/record.url?scp=84871623762&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871623762&partnerID=8YFLogxK
U2 - 10.1007/s10853-012-6901-5
DO - 10.1007/s10853-012-6901-5
M3 - Article
AN - SCOPUS:84871623762
SN - 0022-2461
VL - 48
SP - 132
EP - 139
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 1
ER -