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Intergranular glassy phase free SiC ceramics retains strength at 1500 °C

2004; Elsevier BV; Volume: 50; Issue: 9 Linguagem: Inglês

10.1016/j.scriptamat.2004.02.008

1872-8456

Heon‐Jin Choi, Young‐Wook Kim, Mamoru Mitomo, Toshiyuki Nishimura, Je‐Hun Lee, Doh‐Yeon Kim,

Magnesium Oxide Properties and Applications

We report SiC ceramics sintered with AlN and Sc2O3 (or Lu2O3) that retain room temperature strength to 1500 °C. The intergranular glassy phase has not been observed in the ceramics due to a designed-sintering additive and, thus, the unsatisfactory effect of glassy phases on the high temperature strength is eliminated.