Published in:
01-06-2009 | Letter
A novel approach for synthesis of nanocrystalline MgAl2O4 powders by co-precipitation method
Authors:
M. M. Rashad, Z. I. Zaki, H. El-Shall
Published in:
Journal of Materials Science
|
Issue 11/2009
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Excerpt
Magnesium aluminate spinel (MgAl
2O
4) posseses a unique combination of desirable properties such as high melting point (2,135 °C), good mechanical strength at room and evaluated temperatures, high chemical inertness, low dielectric constant and electrical losses, good shock resistance, and excellent optical properties [
1]. Due to these desirable properties, it has a wide range of applications in structural, chemical, optical, and electrical industries. MgAl
2O
4 has mainly been used as refractory in heavy industry and as substrate for solid-state electronic devices. Nowadays, new potential applications have been reported including; ceramic ultra-filtration membranes, electro-insulators, and optical materials such as optically transparent, fiber-optic temperature sensors, tunable solid-state lasers, matrix for fabrication of optical nanodevices, high-brightness phosphor screen, catalysis, and humidity sensor applications. Furthermore, the MgAl
2O
4 spinel has been employed as excellent transparent ceramic materials for high temperature arc-enclosing envelopes and alkali-metal vapor discharge devices [
2‐
9]. …