Paper number 886

IMPROVED MAGNETIZATION OF 3Y-ZRO2/ BA-HEXAFERRITE COMPOSITE BY POST-PLASTIC DEFORMATION

Yoshikazu Suzuki, Masanobu Awano, Naoki Kondo and Tatsuki Ohji

National Industrial Research Institute of Nagoya
1-1 Hirate-cho, Kita-ku, Nagoya 462-8510, Japan

Summary

Microstrucure, deformation behavior and magnetic properties of 3 mol%-Y2O3-partially-stabilized zirconia (3Y-ZrO2) containing 20 wt% barium hexaferrite (BaFe12O19) were studied. Post-plastic deformation for the composite at high temperatures (i.e. hot-forging) led to the formation of textile microstructure of the platelet BaFe12O19 grains. Saturation magnetization and coercivity were improved by the post-plastic deformation process, presumably due to the alignment of easy-magnetization axis of BaFe12O19 grains.

Keywords

tetragonal zirconia polycrystals, barium hexaferrite, magnetoplumbite, plasticity, textile microstructure, hot-forging, magnetization, coercive force.