Abstract

Aluminum titanate has been widely used in low expansion applications and its thermal stability has been a hot topic. The stability of aluminium titanate research for improving product quality, and expanding its application field is of great significance. Aluminum titanate as glass melt erosion resistance and high temperature resistant, can be applied to high temperature pigment base. The medium temperature stability of aluminum titanate can be improved by ion doping, and magnesium stability of aluminum titanate has been widely studied. Therefore aluminium titanate is expected to become an ideal high temperature ceramic base material. In this paper, the preparation technology of magnesium-stabilized aluminum titanate powder was reviewed, and the preparation of magnesium-stabilized aluminum titanate powder by non-hydrolyzed sol-gel was mainly introduced.

Highlights

  • Aluminum titanate (Al2TiO5, abbreviated as AT) is characterized by high melting point (1860 ̊C ± 10 ̊C) and low expansion (α < 1.5 × 10−6/ ̊C)

  • Its melting point is higher than other low expansion materials, and it has a unique application in high-temperature area, so it is more and more noticed by material workers

  • Magnesium stabilization improves the thermal stability of aluminum titanate

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Summary

Introduction

Aluminum titanate (Al2TiO5, abbreviated as AT) is characterized by high melting point (1860 ̊C ± 10 ̊C) and low expansion (α < 1.5 × 10−6/ ̊C). It is a ceramic material with the best high-temperature resistance among low expansion materials (quartz glass, spodumene, cordierite and aluminum titanate). It has the characteristics of low thermal conductivity (1.5 W/m·K), good thermal shock re-. It can be seen that the coordination octahedrons [AlO6] and [TiO6] formed by Al3+, Ti4+ and O2− form the structural units of aluminum titanate crystal. The preparation methods of magnesium stabilized aluminum titanate are reviewed

Solid-Phase Method
Microwave Sintering
Coprecipitation Method
Sol-Gel Method
Gel Injection Molding
Findings
Conclusion
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