Preparation of Magnetic Particles by the Pyrolysis of Ferrous Oxalate in Various Atmospheres.

• Kobayashi Hidehiko

  Dept. of Applied Chemistry, Fac. of Engineering, Saitama University

• Ikeda Takashi

  Dept. of Applied Chemistry, Fac. of Engineering, Saitama University

• Mitamura Takashi

  Fac. of Engineering, Saitama Institute of Technology

• Kakizaki Koichi

  Dept. of Functional Materials Science, Fac. of Engineering Saitama University

• Hiratsuka Nobuyuki

  Dept. of Functional Materials Science, Fac. of Engineering Saitama University

Bibliographic Information

Other Title

• 磁性材料の化学　各種雰囲気下での熱分解によるシュウ酸鉄からの磁性粉末の調製
• カクシュ フンイキカ デ ノ ネツ ブンカイ ニヨル シュウサン テツ カラ

Abstract

Preparation conditions and formation process of magnetic particles, Fe₃O₄, γ-Fe₂O₃, ε-Fe_xN and γ'-Fe₄N were studied by the pyrolysis of ferrous oxalate derived from FeSO₄ and (NH₄)₂C₂O₄ at temperatures of 300-600°C in various atmospheres such as air, Ar gas, CO₂ gas and NH₃ gas. The resulting product from the pyrolysis of the ferrous oxalate at 350°C in various atmospheres was a reactive Fe₃O₄, and γ-Fe₂O₃ and ε-Fe_xN were prepared at heating the Fe₃O₄ at 350°C in air and at 500°C in NH₃ gas, respectively. The preparation conditions of single phase Fe₃O₄, γ-Fe₂O₃, ε-Fe_xN and γ'-Fe₄N fine powders from the ferrous oxalate were as follows: (1)Fe₃O₄ were prepared by heating both at 350-600°C for lh in CO₂ gas and at 350-450°C for lh in Ar gas. (2) γ-Fe₂O₃ was prepared by heating at 350°C for lh in air. (3)ε-Fe_xN was prepared by heating at 500°C for 2h in NH3 gas. (4)γ'-Fe₄N was prepared by heating at 600°C for 2h in NH₃ gas.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 43 (1), 89-94, 1996

  Japan Society of Powder and Powder Metallurgy

Keywords

• ferrous oxalate
• pyrolysis
• magnetic oxide particles
• magnetic nitride particles

Details

• CRID: 1390282681286072576
• NII Article ID: 10002011133
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.43.89
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 3918040
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3918040
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed