Elevated‐Temperature Behavior of High‐Strength Silicon Carbide

Abstract

The room‐ and high‐temperature mechanical properties or a high‐strength, sintered silicon carbide were evaluated Room‐temperature strength was measured in four‐point bending. The room‐temperature fracture toughness was determined using a precracked single‐edge‐notched beam (SENB) bridge indentation technique. The high‐temperature behavior was evaluated using the stepped‐temperature stress rupture (STSR) procedure. Both the room‐ and the high‐temperature behavior are superior to those of previously tested commercial sintered α and β silicon carbides.