The phase conversion of precursor powders for powder melting process YBa 2Cu 3O 7-x superconductors

Feng Jianqing; Lu Yafeng; Zhou Lian; Zhang Pingxiang; Xu Xiaoyan; Chen Shaokai; Zhang Cuiping; Xiong Xiaomei; Liu Guoqing

doi:10.1007/s10854-007-9468-1

The phase conversion of precursor powders for powder melting process YBa ₂Cu ₃O _7-x superconductors

Feng Jianqing
, Lu Yafeng
, Zhou Lian
, Zhang Pingxiang
, Xu Xiaoyan
, Chen Shaokai
, Zhang Cuiping
, Xiong Xiaomei
, Liu Guoqing

School of Materials Sience and Engineering

Northwest Institute for Nonferrous Metal Research
Northwestern Polytechnical University Xian

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

1 Scopus citations

Abstract

The effects of heating rate and holding time on the formation of YBa ₂Cu ₃O _7-x phase in precursor powders for YBa ₂Cu ₃O _7-x superconducting bulks prepared by powder melting process have been investigated. The phase conversion of the precursor powders is studied by X-ray diffraction and found to be different for different heating rates during heating. The YBa ₂Cu ₃O _7-x phase is formed during heating to peritectic temperature at 100 and 400 °C/h, but not at 6,000 °C/h. The longer the holding time, the more the amount of YBa ₂Cu ₃O _7-x phase between 880 °C and about 950 °C. The results are useful for understanding the mechanism of powder melting process and controlling the process conditions.

Original language	English
Pages (from-to)	1069-1072
Number of pages	4
Journal	Journal of Materials Science: Materials in Electronics
Volume	19
Issue number	11
DOIs	https://doi.org/10.1007/s10854-007-9468-1
State	Published - 2008

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title = "The phase conversion of precursor powders for powder melting process YBa 2Cu 3O 7-x superconductors",

abstract = "The effects of heating rate and holding time on the formation of YBa 2Cu 3O 7-x phase in precursor powders for YBa 2Cu 3O 7-x superconducting bulks prepared by powder melting process have been investigated. The phase conversion of the precursor powders is studied by X-ray diffraction and found to be different for different heating rates during heating. The YBa 2Cu 3O 7-x phase is formed during heating to peritectic temperature at 100 and 400 °C/h, but not at 6,000 °C/h. The longer the holding time, the more the amount of YBa 2Cu 3O 7-x phase between 880 °C and about 950 °C. The results are useful for understanding the mechanism of powder melting process and controlling the process conditions.",

author = "Feng Jianqing and Lu Yafeng and Zhou Lian and Zhang Pingxiang and Xu Xiaoyan and Chen Shaokai and Zhang Cuiping and Xiong Xiaomei and Liu Guoqing",

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T1 - The phase conversion of precursor powders for powder melting process YBa 2Cu 3O 7-x superconductors

AU - Jianqing, Feng

AU - Yafeng, Lu

AU - Lian, Zhou

AU - Pingxiang, Zhang

AU - Xiaoyan, Xu

AU - Shaokai, Chen

AU - Cuiping, Zhang

AU - Xiaomei, Xiong

AU - Guoqing, Liu

PY - 2008

Y1 - 2008

N2 - The effects of heating rate and holding time on the formation of YBa 2Cu 3O 7-x phase in precursor powders for YBa 2Cu 3O 7-x superconducting bulks prepared by powder melting process have been investigated. The phase conversion of the precursor powders is studied by X-ray diffraction and found to be different for different heating rates during heating. The YBa 2Cu 3O 7-x phase is formed during heating to peritectic temperature at 100 and 400 °C/h, but not at 6,000 °C/h. The longer the holding time, the more the amount of YBa 2Cu 3O 7-x phase between 880 °C and about 950 °C. The results are useful for understanding the mechanism of powder melting process and controlling the process conditions.

AB - The effects of heating rate and holding time on the formation of YBa 2Cu 3O 7-x phase in precursor powders for YBa 2Cu 3O 7-x superconducting bulks prepared by powder melting process have been investigated. The phase conversion of the precursor powders is studied by X-ray diffraction and found to be different for different heating rates during heating. The YBa 2Cu 3O 7-x phase is formed during heating to peritectic temperature at 100 and 400 °C/h, but not at 6,000 °C/h. The longer the holding time, the more the amount of YBa 2Cu 3O 7-x phase between 880 °C and about 950 °C. The results are useful for understanding the mechanism of powder melting process and controlling the process conditions.

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U2 - 10.1007/s10854-007-9468-1

DO - 10.1007/s10854-007-9468-1

M3 - 文章

AN - SCOPUS:50349094544

SN - 0957-4522

VL - 19

SP - 1069

EP - 1072

JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

IS - 11

ER -

The phase conversion of precursor powders for powder melting process YBa ₂Cu ₃O _7-x superconductors

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