首页|Preparation of porous mullite ceramics Using Al as Foaming Agent

Preparation of porous mullite ceramics Using Al as Foaming Agent

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Effects of Al in different added condition on pores shape and mullite configuration were investigated. Three sorts of hole were got by using Al as foaming agent in mullite composites. It was concluded that isolated holes could be formed by Al changing to Al_2Ol_3 with acidity condition in green state, open holes could be formed by Al changing to Al_2O_3 directly in sintering process, and mixed hole of isolated and open ones could be formed by Al changing to Al(OH)_3 with alkalescence condition in green state followed changing to Al_2O_3 in sintering process. These holes could supply a position for growth of mullite as well.

porous ceramicsmullitealuminum

Jiazhi Yin、Jiachen Liu、Anran Guo、Di Song、Wenjun Wang

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School of Materials Science and Engineering of Tianjin University, Key Lab of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin 300072, China

China Coal Pingshuo Industry Coal Corporation, Shanxi 036000, China

2010

Key engineering materials

Key engineering materials

ISSN:1013-9826
年,卷(期):2010.434/435
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