Bulk manufacture of YBCO powders by coprecipitation

Bhargava, A., Mackinnon, Ian D. R., Yamashita, T., & Page, D. (1995) Bulk manufacture of YBCO powders by coprecipitation. Physica C: Superconductivity and its applications, 241(1-2), pp. 53-62.

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This work presents an assessment of the coprecipitation technique for the reliable production of high-temperature superconducting (HTS) copper-oxide powders in quantities scaled up to 1 kg. This process affords precise control of cation stoichiometry (< 4% relative), occurs rapidly (almost instantaneously) and can be suitably developed for large-scale (e.g. tonne) manufacture of HTS materials. The process is based upon a simple control of the chemistry of the cation solution and precipitation with oxalic acid. This coprecipitation method is applicable to all copper-oxides and has been demonstrated in this work using over thirty separate experiments for the following compositions: YBa2Cu3O7-δ, Y2BaCuO5 and YBa2Cu4O8. The precursor powders formed via this coprecipitation process are fine-grained (∼ 5-10 nm), chemically homogeneous at the nanometer scale and reactive, Conversion to phase-pure HTS powders can therefore occur in minutes at appropriate firing temperatures. © 1995.

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22 citations in Web of Science®

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ID Code: 57474
Item Type: Journal Article
Refereed: Yes
Additional Information: Cited By (since 1996): 15 Export Date: 19 February 2013 Source: Scopus CODEN: PHYCE Language of Original Document: English Correspondence Address: Bhargava, A.; Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia, QLD 4072, Australia
Keywords: high temperature superconductors, copper oxides, coprecipitation, bulk production, YBa2Cu3O7-x
DOI: 10.1016/0921-4534(94)00638-5
ISSN: 0921-4534
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > MACROMOLECULAR AND MATERIALS CHEMISTRY (030300) > Synthesis of Materials (030306)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Ceramics (091201)
Divisions: Current > Institutes > Institute for Future Environments
Deposited On: 26 Feb 2013 23:47
Last Modified: 26 Feb 2013 23:47

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