A technique called transformation toughenening uses a bunch of small particles of zirconia dispersed in alumina causing compressive stresses at crack tips preventing them from propogating and increasing toughness
A technique called transformation toughenening uses a bunch of small particles of zirconia dispersed in alumina causing compressive stresses at crack tips preventing them from propogating and increasing toughness
No cracks have ever propogated in this material 😳