Effect of Mixed Grinding of Powders On Superconducting Properties of Yba2Cu307-yCeramics

Hojin Ryu; Kazumasa Sugiyama; Eiki Kasai; Daisuke Shindo; Fumio Saito

doi:10.1252/jcej.26.627

Effect of Mixed Grinding of Powders On Superconducting Properties of Yba₂Cu₃0_7-_yCeramics

Hojin Ryu, Kazumasa Sugiyama, Eiki Kasai, Daisuke Shindo, Fumio Saito

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

1 Citation (Scopus)

Abstract

The effect of mixed grinding of Y₂0₃, BaCO₃ and CuO powders using a planetary ball mill before heat treatment of the crystal structure and the superconducting properties of the sintered body has been investigated by XRD, SEM, TEM-EDX, EELS, and measurement of the critical temperature and critical current density. The size reduction of powders predominates in the early stage of grinding, after which aggregation of the obtained fine particles takes place. The homogeneity in the mixture is improved with increase in grinding time. The critical current density of the sintered body changes with increase in grinding time of the mixture and reaches maximum value at 60 minutes grinding, while the critical temperature is almost independent of grinding time.

Original language	English
Pages (from-to)	627-632
Number of pages	6
Journal	JOURNAL of CHEMICAL ENGINEERING of JAPAN
Volume	26
Issue number	6
DOIs	https://doi.org/10.1252/jcej.26.627
Publication status	Published - 1993

Keywords

Ceramics
Critical Current Density
Critical Temperature
Crystal Structure
Grinding
Planetary Ball Mill
Superconductor

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

Access to Document

10.1252/jcej.26.627

Cite this

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title = "Effect of Mixed Grinding of Powders On Superconducting Properties of Yba2Cu307-yCeramics",

abstract = "The effect of mixed grinding of Y203, BaCO3 and CuO powders using a planetary ball mill before heat treatment of the crystal structure and the superconducting properties of the sintered body has been investigated by XRD, SEM, TEM-EDX, EELS, and measurement of the critical temperature and critical current density. The size reduction of powders predominates in the early stage of grinding, after which aggregation of the obtained fine particles takes place. The homogeneity in the mixture is improved with increase in grinding time. The critical current density of the sintered body changes with increase in grinding time of the mixture and reaches maximum value at 60 minutes grinding, while the critical temperature is almost independent of grinding time.",

keywords = "Ceramics, Critical Current Density, Critical Temperature, Crystal Structure, Grinding, Planetary Ball Mill, Superconductor",

author = "Hojin Ryu and Kazumasa Sugiyama and Eiki Kasai and Daisuke Shindo and Fumio Saito",

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AU - Ryu, Hojin

AU - Sugiyama, Kazumasa

AU - Kasai, Eiki

AU - Shindo, Daisuke

AU - Saito, Fumio

PY - 1993

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AB - The effect of mixed grinding of Y203, BaCO3 and CuO powders using a planetary ball mill before heat treatment of the crystal structure and the superconducting properties of the sintered body has been investigated by XRD, SEM, TEM-EDX, EELS, and measurement of the critical temperature and critical current density. The size reduction of powders predominates in the early stage of grinding, after which aggregation of the obtained fine particles takes place. The homogeneity in the mixture is improved with increase in grinding time. The critical current density of the sintered body changes with increase in grinding time of the mixture and reaches maximum value at 60 minutes grinding, while the critical temperature is almost independent of grinding time.

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