Critical current density of Ag-sheathed (Bi,Pb) 2223 tapes produced by various thermo-mechanical treatment patterns

Shinkawa, Masaki; Utsunomiya, Hiroshi; Sakai, Taiji; Saito, Yoshihiro

doi:10.1016/s0921-4534(97)00456-5

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…The degree of the texturing was evaluated by the full width at half maxi-mum (FWHM) along the rolling direction of the (0 0 14) pole intensity normal to the rolling plane [22]. Transversal crosssection images of tapes were observed on a Nova 400 Nano-SEM in the backscattered electron (BSE) imaging mode.…”

Section: Methodsmentioning

confidence: 51%

Fabrication and Properties of Ag–Ni Bimetallic Sheathed (Bi,Pb)-2223 Tapes

Chen

Liu

et al. 2012

J Supercond Nov Magn

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10-meter-long Ag-Ni bimetallic sheathed (Bi,Pb)-2223 tapes with outer nickel sheath and inner silver sheath have been successfully fabricated by the "Powder in tube" technique. Microstructure and phase evolution studies by means of SEM and XRD, as well as critical current density (J c ) measurements have been performed. It is found that the nickel sheath and dwell time in the first sintering process have great influences on the texture evolution, phase transformation and J c of the Bi-2223/Ag/Ni tapes. Monofilament (Bi,Pb)-2223 tape with a J c of 6656 A cm −2 and 61-filament tape with a J c of 12420 A cm −2 are obtained. Although using composite bimetallic sheaths can reduce production costs and improve mechanical properties of the Bi-2223 tapes, the Bi-2223 content and J c of Bi-2223/Ag/Ni tapes are relatively lower than that of traditional Bi-2223/Ag tapes. Meanwhile, due to higher Bi-2223 content and better alignment of Bi-2223 grains, tapes with 61-filament have higher J c than mono-filament tapes.

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Section: Methodsmentioning

confidence: 51%

Fabrication and Properties of Ag–Ni Bimetallic Sheathed (Bi,Pb)-2223 Tapes

Chen

Liu

et al. 2012

J Supercond Nov Magn

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“…In previous studies it has been proven that a sufficient combination of heat treatment and mechanical deformation (flat rolling or pressing) can improve the J c of Bi-2223/Ag tapes [4][5][6][7]. The mechanical deformation was found to improve the alignment of Ag/Bi 1.8 Pb 0.4 Sr 2 Ca 2.2 Cu 3 O 10−x (Bi-2223) grains in the tapes [8][9][10], to increase the HTSC core density [11,12] and to facilitate greater conversion of precursor powder to the 2223 phase in the tapes [13].…”

Section: Introductionmentioning

confidence: 99%

Effect of intermediate rolling on the transport properties of Ag-sheathed (Bi,Pb)₂Sr₂Ca₂Cu₃O_xsuperconductor tapes

Lau

Chen

Abd‐Shukor

2002

Supercond. Sci. Technol.

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We have studied the transport properties of Ag-sheathed (Bi,Pb)2Sr2Ca2Cu3Ox (Bi-2223/Ag) superconductor tapes prepared by different thermo-mechanical treatments from the aspects of structural quality and the intermediate rolling effect. Intermediate rolling improved the self-field Jc of the tapes by a factor of three compared to tapes without intermediate rolling. A similar behaviour of Jc decreasing in the magnetic field was observed for all samples. It is suggested that weak and strong links play a role in the decrease. The contribution of strong links in all tapes is calculated and is briefly discussed. The pinning behaviour of the tapes in the applied field is discussed, and the critical magnetic fields at which the pinning force density vanished were found to be from 0.25 to 0.77 T. Intermediate rolling was found to improve the structural quality of the tapes.

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Effects of tension during rolling on the critical current density of Ag-sheathed (Bi,Pb)2223 superconducting tapes

Shinkawa

Utsunomiya

Sakai

et al. 1998

Physica C: Superconductivity

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Critical current density of Ag-sheathed (Bi,Pb) 2223 tapes produced by various thermo-mechanical treatment patterns

Cited by 6 publications

References 10 publications

Fabrication and Properties of Ag–Ni Bimetallic Sheathed (Bi,Pb)-2223 Tapes

Fabrication and Properties of Ag–Ni Bimetallic Sheathed (Bi,Pb)-2223 Tapes

Effect of intermediate rolling on the transport properties of Ag-sheathed (Bi,Pb)₂Sr₂Ca₂Cu₃O_xsuperconductor tapes

Effects of tension during rolling on the critical current density of Ag-sheathed (Bi,Pb)2223 superconducting tapes

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Critical current density of Ag-sheathed (Bi,Pb) 2223 tapes produced by various thermo-mechanical treatment patterns

Cited by 6 publications

References 10 publications

Fabrication and Properties of Ag–Ni Bimetallic Sheathed (Bi,Pb)-2223 Tapes

Fabrication and Properties of Ag–Ni Bimetallic Sheathed (Bi,Pb)-2223 Tapes

Effect of intermediate rolling on the transport properties of Ag-sheathed (Bi,Pb)2Sr2Ca2Cu3Oxsuperconductor tapes

Effects of tension during rolling on the critical current density of Ag-sheathed (Bi,Pb)2223 superconducting tapes

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Effect of intermediate rolling on the transport properties of Ag-sheathed (Bi,Pb)₂Sr₂Ca₂Cu₃O_xsuperconductor tapes