Reactive sintering for oriented and connected Bi-2223 superconductive oxides from a mixture of delaminated Bi-2212 and fine powdered supplemental ingredients

Takenori Kashimura, Tetsuhiko Isobe, Mamoru Senna, Mitsuru Itoh, Tsutomu Koizumi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

For the purpose of obtaining high critical current densities (Jc), well-oriented and connected Bi-2223 was prepared by improved processing techniques, i.e., (i) delamination by mild, wet grinding of a mixture of Bi-2212 and a supplemental phase containing Pb, Sr, Ca and Cu; (ii) preparation of green sheets by casting the slurry on a thin silver plate using an applicator bar; (iii) compression of the green sheet and calcination at 800°C in air; and (iv) firing at 827°C in 7% O2-Ar gas flow. Holding samples under compression in each processing step after delamination promoted grain growth, degree of orientation, fraction of Bi-2223 and, accordingly, better connectivity of the grain colonies.

Original languageEnglish
Pages (from-to)297-304
Number of pages8
JournalPhysica C: Superconductivity and its Applications
Volume270
Issue number3-4
Publication statusPublished - 1996 Oct 20

Fingerprint

Delamination
ingredients
Oxides
sintering
Compaction
Sintering
Applicators
oxides
grinding
Processing
Grain growth
Silver
Calcination
roasting
gas flow
Flow of gases
critical current
Casting
silver
current density

Keywords

  • Bi-2223
  • Delamination
  • Green sheet densification
  • Quantitative analysis of texture
  • Reactive sintering

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Reactive sintering for oriented and connected Bi-2223 superconductive oxides from a mixture of delaminated Bi-2212 and fine powdered supplemental ingredients. / Kashimura, Takenori; Isobe, Tetsuhiko; Senna, Mamoru; Itoh, Mitsuru; Koizumi, Tsutomu.

In: Physica C: Superconductivity and its Applications, Vol. 270, No. 3-4, 20.10.1996, p. 297-304.

Research output: Contribution to journalArticle

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