Formation of mullite from precursor powders: sintering, microstructure and mechanical properties

被引：46

作者：

Ebadzadeh, T ^{[1
]}

机构：

[1] Mat & Energy Res Ctr, Tehran, Iran

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2003年 / 355卷 / 1-2期

关键词：

crystalline phases; mullite; precursor powders;

D O I：

10.1016/S0921-5093(03)00049-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

The effect of precursor powders using aluminium sulphate/boehmite and colloidal silica on the green compact, mullitization, densification, microstructure and mechanical properties was investigated. Mullite precursor powders prepared from aluminium sulphate contain more pores that lowered the density of the green compact and alternatively reduced the density of sintered samples. The average grain size of aluminum sulphate-derived mullite enlarged from 1400 to 1700 degreesC and some elongated grains appeared. The more pores and elongated grains caused the reduction of strength in aluminum sulphate-derived mullite, while these elongated grains lead the toughness values in the range of boehmite derived mullite. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：56 / 61

页数：6

共 23 条

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