The extrusion of continuous lengths of YBa2Cu3O7-x wire using hydroxypropyl methylcellulose
Golden, S. J., Yamashita, T., Bhargarva, A., Barry, John C., Mackinnon, Ian D. R., & Page, D. (1993) The extrusion of continuous lengths of YBa2Cu3O7-x wire using hydroxypropyl methylcellulose. Physica C: Superconductivity and its applications, 217(3-4), pp. 313-318.
Wires of YBa2Cu3O7-x were fabricated by extrusion using a hydroxypropyl methylcellulose (HPMC) binder. As little as 2 wt.% binder was added to an oxide prepared by a novel co-precipitation process, to produce a plastic mass which readily gave continuous extrusion of long lengths of wire in a reproducible fashion. Critical temperatures of 92K were obtained for wires given optimum high-temperature heat treatments. Critical current densities greater than 1000 A cm-1 were measured at 77.3K using heat treatments at around 910°C for 10h. These transport critical current densities, measured on centimeter-long wires, were obtained with microstructures showing a relatively dense and uniform distribution of randomly oriented, small YBa2Cu3O7-x grains. © 1993.
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|Item Type:||Journal Article|
|Additional Information:||Cited By (since 1996): 5
Export Date: 19 February 2013
Language of Original Document: English
Correspondence Address: Golden, S.J.; Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia, QLD 4072, Australia
|Keywords:||Binders, Crystal microstructure, Electric current measurement, Heat treatment, Magnetic field effects, Microscopic examination, X ray analysis, Yttrium compounds, Coprecipitation, Critical current density, Hydroxypropyl methylcellulose, Magnetic susceptibility, Yttrium barium copper oxides, High temperature superconductors|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Ceramics (091201)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Functional Materials (091205)
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Deposited On:||26 Feb 2013 23:42|
|Last Modified:||26 Feb 2013 23:42|
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