Control of the texture in feeble magnetic ceramics using colloidal processing in a strong magnetic field

Tohru Suzuki, Yoshio Sakka, Koichi Kitazawa

Research output: Contribution to journalArticle

Abstract

The controlled development of texture has recently become a topic of interest in ceramic processing, since it allows improved tailoring of the properties of a material. Anisotropic susceptibilities of feeble magnetic ceramics such as A1 2 O 3 and ZnO are quite small. It is generally difficult to apply a magnetic field effectively in order to rotate fine feeble magnetic particles, since fine particles tend to spontaneously agglomerate due to strong attractive interactions (van der Waals forces). It is necessary to disperse the particles in a suspension in order to effectively utilize a magnetic field to rotate the particles. Colloidal processing is a powerful technique for controlling the stability of particles in a suspension. This processing can be used for production of textured ceramics with complex shapes by near-net-shape slip casting. In addition, the direction of textured polycrystalline can be controlled by the direction of the applied magnetic field.

Original languageEnglish
Pages (from-to)479-487
Number of pages9
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume53
Issue number6
DOIs
Publication statusPublished - 2006 Jun 1
Externally publishedYes

Fingerprint

Textures
Magnetic fields
Suspensions
Processing
Van der Waals forces
Casting
Direction compound

Keywords

  • Diamagnetic ceramics
  • Grain growth
  • Orientation
  • Sintering

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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