Effect of heat treatment atmosphere on grain size and phase composition of (Bi, Pb)2Sr2Ca2 Cu3Oy superconducting tapes

Qing Bin Hao; Cheng Shan Li; Hui Ling Zheng; Xiao Mei Xiong; Guo Qing Liu; Rui Hu

Effect of heat treatment atmosphere on grain size and phase composition of (Bi, Pb)₂Sr₂Ca₂ Cu₃O_y superconducting tapes

Qing Bin Hao, Cheng Shan Li, Hui Ling Zheng, Xiao Mei Xiong, Guo Qing Liu, Rui Hu

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

(Bi, Pb)₂Sr₂Ca₂ Cu₃O_y (Bi-2223) superconducting tapes were made by powder-in-tube (PIT) method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to study the effect of heat treatment atmosphere on grain size, crystallinity and phase composition of the Bi-2223 tapes. The experiment results show that annealing in air increases grain size of Bi-2223. Sintering in 7.5%O₂-Ar reduces the non-superconducting phase and improves crystallinity. It is profitable to reduce non-superconducting phase and increase grain size of Bi-2223 by a combined heat treatment method (using two kinds of different atmospheres during heat treatment). The critical current density of the tapes prepared by controlling heat treatment procedure is 2.0×10⁴ A/cm² at 77 K, self-field.

Original language	English
Pages (from-to)	39-43
Number of pages	5
Journal	Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
Volume	30
Issue number	4
State	Published - Aug 2009

Keywords

AEC phases
Atmosphere
Bi-2223 tape
Grain size

Cite this

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title = "Effect of heat treatment atmosphere on grain size and phase composition of (Bi, Pb)2Sr2Ca2 Cu3Oy superconducting tapes",

abstract = "(Bi, Pb)2Sr2Ca2 Cu3Oy (Bi-2223) superconducting tapes were made by powder-in-tube (PIT) method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to study the effect of heat treatment atmosphere on grain size, crystallinity and phase composition of the Bi-2223 tapes. The experiment results show that annealing in air increases grain size of Bi-2223. Sintering in 7.5%O2-Ar reduces the non-superconducting phase and improves crystallinity. It is profitable to reduce non-superconducting phase and increase grain size of Bi-2223 by a combined heat treatment method (using two kinds of different atmospheres during heat treatment). The critical current density of the tapes prepared by controlling heat treatment procedure is 2.0×104 A/cm2 at 77 K, self-field.",

keywords = "AEC phases, Atmosphere, Bi-2223 tape, Grain size",

author = "Hao, {Qing Bin} and Li, {Cheng Shan} and Zheng, {Hui Ling} and Xiong, {Xiao Mei} and Liu, {Guo Qing} and Rui Hu",

year = "2009",

month = aug,

language = "英语",

volume = "30",

pages = "39--43",

journal = "Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment",

issn = "1009-6264",

publisher = "Chinese Mechanical Engineering Society",

number = "4",

}

TY - JOUR

T1 - Effect of heat treatment atmosphere on grain size and phase composition of (Bi, Pb)2Sr2Ca2 Cu3Oy superconducting tapes

AU - Hao, Qing Bin

AU - Li, Cheng Shan

AU - Zheng, Hui Ling

AU - Xiong, Xiao Mei

AU - Liu, Guo Qing

AU - Hu, Rui

PY - 2009/8

Y1 - 2009/8

N2 - (Bi, Pb)2Sr2Ca2 Cu3Oy (Bi-2223) superconducting tapes were made by powder-in-tube (PIT) method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to study the effect of heat treatment atmosphere on grain size, crystallinity and phase composition of the Bi-2223 tapes. The experiment results show that annealing in air increases grain size of Bi-2223. Sintering in 7.5%O2-Ar reduces the non-superconducting phase and improves crystallinity. It is profitable to reduce non-superconducting phase and increase grain size of Bi-2223 by a combined heat treatment method (using two kinds of different atmospheres during heat treatment). The critical current density of the tapes prepared by controlling heat treatment procedure is 2.0×104 A/cm2 at 77 K, self-field.

AB - (Bi, Pb)2Sr2Ca2 Cu3Oy (Bi-2223) superconducting tapes were made by powder-in-tube (PIT) method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to study the effect of heat treatment atmosphere on grain size, crystallinity and phase composition of the Bi-2223 tapes. The experiment results show that annealing in air increases grain size of Bi-2223. Sintering in 7.5%O2-Ar reduces the non-superconducting phase and improves crystallinity. It is profitable to reduce non-superconducting phase and increase grain size of Bi-2223 by a combined heat treatment method (using two kinds of different atmospheres during heat treatment). The critical current density of the tapes prepared by controlling heat treatment procedure is 2.0×104 A/cm2 at 77 K, self-field.

KW - AEC phases

KW - Atmosphere

KW - Bi-2223 tape

KW - Grain size

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M3 - 文章

AN - SCOPUS:70049085506

SN - 1009-6264

VL - 30

SP - 39

EP - 43

JO - Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment

JF - Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment

IS - 4

ER -

Effect of heat treatment atmosphere on grain size and phase composition of (Bi, Pb)₂Sr₂Ca₂ Cu₃O_y superconducting tapes

Abstract

Keywords

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