Influence of sintering temperatures on microstructures of mullite-corundum composite materials

被引：0

作者：

Shen Yang ^{[1
]}

Ruan Yuzhong ^{[1
]}

Yu Yan ^{[1
]}

机构：

[1] Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350002, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2007年 / 36卷

关键词：

waste aluminum slag; mullite; corundum; composite materials; microstructures;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Waste aluminum slag and clay were used as raw materials to prepare mullite-corundum composites. The influences of different Al2O3/SiO2 ratios on the crystalline phases were discussed. XRD and SEM techniques were used to characterize the crystalline phases. The results show that sintering temperature can significantly change the crystalline phases and their amount. Two crystals mullite solid solution and corundum were formed in each sample. Mullite solid solution has two compositions: Al4.544Si1.4560O9.728 and Al4.59Si1.41O9.70. The amount of mullite increases with sintering temperature increasing, and reaches to the highest 100% at 1650 degrees C. SEM observation shows that mullite takes needle-like or column shapes which indicates good properties of materials.

引用

页码：830 / 832

页数：3