Crack-Healing Ability of Structural Ceramics and Methodology to Guarantee the Reliability of Ceramic Components

Abstract

The heat-resistant limit of structural ceramics is 1273K {\textasciitilde} 1773K, which is greatly superior to that of metallic material. Structural ceramics are a candidate element for high-temperature apparatuses such as gas-turbines and fusion reactors. However, the fracture toughness of ceramics is fairly low compared with metallic material, and the following problems have occurred. ... Crack sizes of about 10 {\textasciitilde} 30 $μ$m in depth affect the reliability . The nondestructive-inspection ...