Effect of temperature on forsterite
The coefficient of thermal expansion of fused magnesite-alumina spinel bricks increases from room temperature to about 1500°C, and the linear expansion rate gradually increases. At 1500°C or so, the maximum linear expansion rate shows no significant decrease. Therefore, the linear expansion rate of the sintered magnesium-magnesia spinel bricks from room temperature to 1500°C is steadily increasing. Analysis of Linear Expansion Coefficients of Forsterite Bricks . Thermal shock stability of mafic spinel and forsterite composite bricks at the same temperature of 1000°C for fused magnesite-alumina spinel and forsterite composite bricks and sintered mafic spinel and spinel Discussion on Thermal Shock Stability of Peridot Composite Bricks .
Photographs of fused M-AF spinel and olivine composite bricks with sintered M-AF spinel and olivine composite bricks after 5 thermal shocks. After five thermal shocks at 1000°C, there was no obvious crack on the surface of the joint between the fused magnesite-alumina spinel and the forsterite composite brick. However, there were slight cracks on the surface of the sintered MgAl2O4 spinel and forsterite composite tile. There were no cracks on the surface of the two samples of magnesium-magnesium-aluminum spinel bricks, and the surface of the forsterite bricks had different degrees of cracking. The cracking phenomenon of the forsterite portion in the composite brick of the fused magnesite-alumina spinel and the forsterite is relatively obvious with respect to the forsterite portion in the composite brick of the sintered magnesite-alumina spinel and the forsterite brick.
It can be concluded that the resistance to high-temperature stress of the sintered mafic-alumina spinel brick and the forsterite brick is higher than that of the refractory bricks of the fused magnesia-alumina spinel brick and the forsterite . Influence of Temperature on Mg, Al2O3, Spinel and Forsterite Bricks. Mainly studied the properties of Mg-Fe-Al spinel and forsterite composite bricks at different temperatures.
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