Mechanical grinding and reforming process of the Bi-2201 phase

Yasunori Ikeda, Yoshihiro Daitoh, Mikio Takano, Yoshichika Bando, Toshinobu Niinae, Jun Takada

Research output: Contribution to journalArticle

Abstract

Mechanical grinding and the reformation from ground powder of the Bi-2201 phase were examined by XRD, TEM and DTA. The `2201' phase changed easily into amorphous powder and ultra-fine crystals by mechanical grinding. When heated above 800°C, the ground powder reacted to reform the original `2201' phase. The fine `2201' crystals smaller than a critical size remaining in the ground powder were decomposed into Bi2CuO4 and SrCO3 by heating around 500°C in air, while even at room temperature in the air the XRD peaks from these ultra-fine crystals tend to disappear and SrCO3 formed on grinding.

Original languageEnglish
Pages (from-to)183-186
Number of pages4
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume40
Issue number2
Publication statusPublished - Feb 1993

Fingerprint

Reforming reactions
Powders
Crystals
Air
Differential thermal analysis
Transmission electron microscopy
Heating
Temperature

ASJC Scopus subject areas

  • Mechanical Engineering
  • Metals and Alloys

Cite this

Mechanical grinding and reforming process of the Bi-2201 phase. / Ikeda, Yasunori; Daitoh, Yoshihiro; Takano, Mikio; Bando, Yoshichika; Niinae, Toshinobu; Takada, Jun.

In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 40, No. 2, 02.1993, p. 183-186.

Research output: Contribution to journalArticle

Ikeda, Y, Daitoh, Y, Takano, M, Bando, Y, Niinae, T & Takada, J 1993, 'Mechanical grinding and reforming process of the Bi-2201 phase', Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, vol. 40, no. 2, pp. 183-186.
Ikeda, Yasunori ; Daitoh, Yoshihiro ; Takano, Mikio ; Bando, Yoshichika ; Niinae, Toshinobu ; Takada, Jun. / Mechanical grinding and reforming process of the Bi-2201 phase. In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy. 1993 ; Vol. 40, No. 2. pp. 183-186.
@article{e7532c9544244623bb0133e21a03af34,
title = "Mechanical grinding and reforming process of the Bi-2201 phase",
abstract = "Mechanical grinding and the reformation from ground powder of the Bi-2201 phase were examined by XRD, TEM and DTA. The `2201' phase changed easily into amorphous powder and ultra-fine crystals by mechanical grinding. When heated above 800°C, the ground powder reacted to reform the original `2201' phase. The fine `2201' crystals smaller than a critical size remaining in the ground powder were decomposed into Bi2CuO4 and SrCO3 by heating around 500°C in air, while even at room temperature in the air the XRD peaks from these ultra-fine crystals tend to disappear and SrCO3 formed on grinding.",
author = "Yasunori Ikeda and Yoshihiro Daitoh and Mikio Takano and Yoshichika Bando and Toshinobu Niinae and Jun Takada",
year = "1993",
month = "2",
language = "English",
volume = "40",
pages = "183--186",
journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",
issn = "0532-8799",
publisher = "Funtai Funamtsu Yakin Kyokai/Japan Soc. of Powder Metallurgy",
number = "2",

}

TY - JOUR

T1 - Mechanical grinding and reforming process of the Bi-2201 phase

AU - Ikeda, Yasunori

AU - Daitoh, Yoshihiro

AU - Takano, Mikio

AU - Bando, Yoshichika

AU - Niinae, Toshinobu

AU - Takada, Jun

PY - 1993/2

Y1 - 1993/2

N2 - Mechanical grinding and the reformation from ground powder of the Bi-2201 phase were examined by XRD, TEM and DTA. The `2201' phase changed easily into amorphous powder and ultra-fine crystals by mechanical grinding. When heated above 800°C, the ground powder reacted to reform the original `2201' phase. The fine `2201' crystals smaller than a critical size remaining in the ground powder were decomposed into Bi2CuO4 and SrCO3 by heating around 500°C in air, while even at room temperature in the air the XRD peaks from these ultra-fine crystals tend to disappear and SrCO3 formed on grinding.

AB - Mechanical grinding and the reformation from ground powder of the Bi-2201 phase were examined by XRD, TEM and DTA. The `2201' phase changed easily into amorphous powder and ultra-fine crystals by mechanical grinding. When heated above 800°C, the ground powder reacted to reform the original `2201' phase. The fine `2201' crystals smaller than a critical size remaining in the ground powder were decomposed into Bi2CuO4 and SrCO3 by heating around 500°C in air, while even at room temperature in the air the XRD peaks from these ultra-fine crystals tend to disappear and SrCO3 formed on grinding.

UR - http://www.scopus.com/inward/record.url?scp=0027541091&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027541091&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0027541091

VL - 40

SP - 183

EP - 186

JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

SN - 0532-8799

IS - 2

ER -