Effects of Cooling Rate on the Microstructures and Transport Properties of AgAu Sheathed Bi-2223 Tapes

Xiaobo Ma; Shengnan Zhang; Zeming Yu; Guoqing Liu; Lei Jiao; Hui Ling Zheng; Chengshan Li; Pingxiang Zhang; Jinshan Li

Effects of Cooling Rate on the Microstructures and Transport Properties of AgAu Sheathed Bi-2223 Tapes

Xiaobo Ma, Shengnan Zhang, Zeming Yu, Guoqing Liu, Lei Jiao, Hui Ling Zheng, Chengshan Li, Pingxiang Zhang, Jinshan Li

School of Materials Sience and Engineering

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

2 Scopus citations

Abstract

Monofilament AgAu sheathed Bi-2223 tapes were fabricated by powder in tube (PIT) process. The influences of cooling rate during the second heat treatment process (HT2) on the phase composition, microstructures and transport properties of Bi-2223/AgAu tapes were investigated. Results show that after the HT2 process, the content of Pb-rich Pb₃Sr_2.5Bi_0.5Ca₂CuO_y (3321) phase increases with the decreasing cooling rate, while the size of CuO phase particles becomes bigger. With the cooling rate decreasing from 600℃/h by 1℃/h, the critical current density J_c increases from 7 kA/cm² to the maximum value of 11.5 kA/cm², which increases by 64%. Meanwhile the current capacities in magnetic field of these Bi-2223/AgAu tapes have also been enhanced with slow cooling process, attributed to the improvements of both the intergrain connectivity and the flux pinning properties.

Translated title of the contribution	降温速率对Bi-2223/AgAu带材微观结构和传输性能的影响
Original language	English
Pages (from-to)	1814-1818
Number of pages	5
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	48
Issue number	6
State	Published - 1 Jun 2019

Keywords

(Bi, Pb)-2223/AgAu tapes
Cooling rate
Critical current density
High temperature superconductor
Microstructure

Cite this

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title = "Effects of Cooling Rate on the Microstructures and Transport Properties of AgAu Sheathed Bi-2223 Tapes",

abstract = "Monofilament AgAu sheathed Bi-2223 tapes were fabricated by powder in tube (PIT) process. The influences of cooling rate during the second heat treatment process (HT2) on the phase composition, microstructures and transport properties of Bi-2223/AgAu tapes were investigated. Results show that after the HT2 process, the content of Pb-rich Pb3Sr2.5Bi0.5Ca2CuOy (3321) phase increases with the decreasing cooling rate, while the size of CuO phase particles becomes bigger. With the cooling rate decreasing from 600℃/h by 1℃/h, the critical current density Jc increases from 7 kA/cm2 to the maximum value of 11.5 kA/cm2, which increases by 64%. Meanwhile the current capacities in magnetic field of these Bi-2223/AgAu tapes have also been enhanced with slow cooling process, attributed to the improvements of both the intergrain connectivity and the flux pinning properties.",

keywords = "(Bi, Pb)-2223/AgAu tapes, Cooling rate, Critical current density, High temperature superconductor, Microstructure",

author = "Xiaobo Ma and Shengnan Zhang and Zeming Yu and Guoqing Liu and Lei Jiao and Zheng, {Hui Ling} and Chengshan Li and Pingxiang Zhang and Jinshan Li",

year = "2019",

month = jun,

day = "1",

language = "英语",

volume = "48",

pages = "1814--1818",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

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T1 - Effects of Cooling Rate on the Microstructures and Transport Properties of AgAu Sheathed Bi-2223 Tapes

AU - Ma, Xiaobo

AU - Zhang, Shengnan

AU - Yu, Zeming

AU - Liu, Guoqing

AU - Jiao, Lei

AU - Zheng, Hui Ling

AU - Li, Chengshan

AU - Zhang, Pingxiang

AU - Li, Jinshan

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Monofilament AgAu sheathed Bi-2223 tapes were fabricated by powder in tube (PIT) process. The influences of cooling rate during the second heat treatment process (HT2) on the phase composition, microstructures and transport properties of Bi-2223/AgAu tapes were investigated. Results show that after the HT2 process, the content of Pb-rich Pb3Sr2.5Bi0.5Ca2CuOy (3321) phase increases with the decreasing cooling rate, while the size of CuO phase particles becomes bigger. With the cooling rate decreasing from 600℃/h by 1℃/h, the critical current density Jc increases from 7 kA/cm2 to the maximum value of 11.5 kA/cm2, which increases by 64%. Meanwhile the current capacities in magnetic field of these Bi-2223/AgAu tapes have also been enhanced with slow cooling process, attributed to the improvements of both the intergrain connectivity and the flux pinning properties.

AB - Monofilament AgAu sheathed Bi-2223 tapes were fabricated by powder in tube (PIT) process. The influences of cooling rate during the second heat treatment process (HT2) on the phase composition, microstructures and transport properties of Bi-2223/AgAu tapes were investigated. Results show that after the HT2 process, the content of Pb-rich Pb3Sr2.5Bi0.5Ca2CuOy (3321) phase increases with the decreasing cooling rate, while the size of CuO phase particles becomes bigger. With the cooling rate decreasing from 600℃/h by 1℃/h, the critical current density Jc increases from 7 kA/cm2 to the maximum value of 11.5 kA/cm2, which increases by 64%. Meanwhile the current capacities in magnetic field of these Bi-2223/AgAu tapes have also been enhanced with slow cooling process, attributed to the improvements of both the intergrain connectivity and the flux pinning properties.

KW - (Bi, Pb)-2223/AgAu tapes

KW - Cooling rate

KW - Critical current density

KW - High temperature superconductor

KW - Microstructure

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M3 - 文章

AN - SCOPUS:85072663573

SN - 1002-185X

VL - 48

SP - 1814

EP - 1818

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 6

ER -

Effects of Cooling Rate on the Microstructures and Transport Properties of AgAu Sheathed Bi-2223 Tapes

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