Effect of sillimanite beach sand composition on mullitization and properties of Al2O3-SiO2 system

被引：14

作者：

Tripathi, HS ^{[1
]}

Mukherjee, B ^{[1
]}

Das, SK ^{[1
]}

Ghosh, A ^{[1
]}

Banerjee, G ^{[1
]}

机构：

[1] Cent Glass & Ceram Res Inst, Refractories Div, Kolkata 700032, W Bengal, India

来源：

BULLETIN OF MATERIALS SCIENCE | 2003年 / 26卷 / 02期

关键词：

sillimanite; mullite; beach sand; aggregate; MECHANICAL-PROPERTIES; MULLITE;

D O I：

10.1007/BF02707794

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mullite was developed by reaction sintering of sillimanite beach sand and calcined alumina. Two varieties of sillimanite beach sand viz. S and Z having different compositions were selected. Synthesis and properties of mullite were very much dependent on the sillimanite beach sand composition. Presence of higher amount of impurities in the Z-variety of sillimanite sand favours the densification by liquid phase formation. Presence of zircon in Z-variety increases the hardness and fracture toughness. Alumina addition improves the mechanical/thermomechanical properties of the samples. Mullite retains the usual orthorhombic habit of sillimanite. Rounded to sub rounded zirconia dispersed within the mullite matrix of the sample ZA is noticed.

引用

页码：217 / 220

页数：4

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