会议专题

Fabrication of Iron Carbide and Nitride Ceramics with Controlled Magnetic Properties by the Non-Oxide Sol-Gel Process

  The carbodiimide-based non-oxide sol-gel process is a novel route to non-oxide nitride and carbide ceramics.This process has been applied to fabricate ternary or binary silicon based nitride and carbide ceramics.Based on this non-oxide sol-gel process,iron carbide and nitride have been fabricated by reaction of iron trichloride with bis(trimethylsilyl)carbodiimide to form FeCN gel followed by pyrolysis in argon flow at different temperatures.The iron carbide material obtained at 700℃ exhibits hard ferromagnetic properties whereas α-iron along with iron nitride formed at 1200℃ shows soft ferromagnetic properties.Therefore,iron carbide and nitride ceramics with controlled magnetic properties can be obtained along this novel non-oxygen sol-gel process by controlled pyrolysis.The pyrolysis behavior was investigated based on thermal gravimetric analysis coupled with differential scanning calorimetry.The phase structures of the iron carbide and nitride are identified by X-ray diffraction and the magnetic properties of the materials are measured by magnetometer.

Sol-gel process Iron carbide and nitride ceramics Magnetic properties

Xun Lao Xiao Yan Jiao Xie Ya-Li Li

Key Laboratory of Advanced Ceramics and Machining Technology,Ministry of Education,School of Materials Science and Engineering,Tianjin University,Tianjin 300072,P.R.China

国际会议

The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

厦门

英文

1429-1433

2011-11-04(万方平台首次上网日期,不代表论文的发表时间)