SILICON NITRIDE-BASED SINTERED COMPACT

PROBLEM TO BE SOLVED: To provide a silicon nitride-based sintered compact which avoids deterioration in fracture toughness even in the presence of YSiAlON crystals and has excellent strength.SOLUTION: In the silicon nitride-based sintered compact, silicon nitride crystals form a main phase and YSiAl...

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1. Verfasser: TAKIGAWA KAZUAKI
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a silicon nitride-based sintered compact which avoids deterioration in fracture toughness even in the presence of YSiAlON crystals and has excellent strength.SOLUTION: In the silicon nitride-based sintered compact, silicon nitride crystals form a main phase and YSiAlON crystals and YSiAlON crystals are present in a grain boundary phase. As a result, the silicon nitride-based sintered compact with excellent strength can be provided.