微粉体プロセスの高度化による高次構造制御セラミックスの創製
Fabrication of Highly Structure Controlled Ceramics by Advanced Powder Processing

Yoshio SAKKA
The Micromeritics  
Highly structure controlled ceramics were required for improving their properties. Powder processing using fine particles provides this required control mechanism through advancement of (1) fine particle preparation, (2) surface modification, (3) consolidation, and (4) sintering. Here some elementary techniques are shown such as colloidal processing for preparing fine-grained dense or porous ceramics, texture control using a strong magnetic field, and simulation of electric current
more » ... isted sintering (ECAS). As the developments of the above fine powder processing the following advanced ceramics have been demonstrated. (i) Conductive CNT dispersed alumina with excellent mechanical properties by hetero-coagulation of CNT and alumina powders followed by ECAS, (ii) Ordered porous body with controlled pore size and porosity by heterocoagulation of burnable polymer and ceramic fine particles, (iii) Shell-like structure (nacre) of MAX phase ceramics with excellent mechanical properties by colloidal processing under strong magnetic field, (iv) Crystalline-textured laminated composite by EPD under strong magnetic field.
doi:10.24611/micromeritics.2015003 fatcat:qvsh67pjxbcptgp5dejqydbuym