Effects of Dry Grinding of Powder Mixture on Formation of Cordierite in Sintered Body and Its Mechanical Properties

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Fumio Saito¹  Mitsuru Nikaido²  Shigeru Sano¹ 

[1] Institute for Advanced Materials Processing, Tohoku University;Chemical Engineering Department, Ichinoseki National College of Technology

关键词: Grinding;    Cordierite;    Kaolinite;    Talc;    Tumbling Ball Mill;   

DOI  :  10.1252/jcej.33.715

来源: Maruzen Company Ltd

【 摘 要 】

References(12)Dry grinding a mixture composed of kaolinite, talc, and aluminum hydroxide was conducted using a tumbling ball mill to investigate its effect on formation of cordierite in a sintered body prepared from the ground product and its mechanical and thermal properties. The grinding enables us to induce structural changes in the raw materials, namely into amorphous state with good homogenization. Prolonged grinding of about 192 h leads to the formation of single-phase α-cordierite from the ground product at relatively low sintering temperature. Grinding for 192 h and sintering at 1573 K allows us to produce dense α-cordierite in the sintered body, having high Vickers hardness (700 Hv) and a low linear thermal expansion coefficient of 0.6 × 10–6/K (298–1173 K).

【 授权许可】

Unknown