Refractory Technology
Chrome magnesite bricks are

Neutral in nature
Having higher RUL than silica bricks
Acidic in nature
Made by mixing 30% chromite and 70% periclase

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Refractory Technology
Cermets are

Having high strength & resistance to high temperature
All of these
Used in space vehicles, missiles & nuclear energy plants
Composite material containing both ceramic & metallic constituents

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