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Technical Ceramics:

Silicon Nitride Ceramics

Nitride ceramics have a major advantage over metals in their high-temperature capability, reflected in their higher strengths at temperatures above 1000 °C and better oxidation and corrosion resistance.

The mechanical properties are strongly dependent on their surfaces and the presence of defects resulting from their finishing and handling. Production of ceramic articles start with fine powder which is given shape by various casting and pressing methods prior to sintering at approximately 0.7 of the melting temperature.

Source

Idemat 2003