Strengthening of porous TiB2â¿¿SiC ceramics by pre-oxidation and crack-healing

Crack-healing behavior of low porosity ceramics was firstly investigated by pre-oxidizing the samples. From the curves, the strength of porous ceramics obviously improved after pre-oxidation, with a maximum increase in strength of 134.4% for samples pre-oxidized at 800 °C for 240 min.