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在温度高达1425℃和压力高达25MPa的条件下,采用热压技术将碳化硅晶须掺入堇青石基体。在对材料所研究的组份范围内,晶须添加剂提高了材料的机械性能。掺入30vol％的碳化硅晶须后,尽管临界裂纹尺寸增加,断裂韧度还是增加了80％,断裂强度超过40％。研究表明断裂韧度的提高归因于裂缝之间相互作用引起的裂缝的挠曲和晶须对裂缝的连
At temperatures up to 1425°C and pressures up to 25 MPa, silicon carbide whiskers were incorporated into the cordierite matrix using hot pressing techniques. Whisker additives improve the mechanical properties of the material within the composition of the material being studied. After 30 vol% of silicon carbide whiskers were incorporated, the fracture toughness increased by 80% despite the increase in critical crack size, and the fracture strength exceeded 40%. Studies show that the increase in fracture toughness is attributed to the flexing of cracks caused by the interaction between fractures and the connection of whiskers to cracks.