High Temperature Creep of SiC/β-SiAlON Composite (2)

Abstract

The flexural stress rupture and creep at 1350°C of SiC/β-SiAlON composites were investigated. The rupture in short time was not found on creep test of SiC/β-SiAlON composites in the range of low flexural stress compared with β-SiAlON ceramics. And SiC/β-SiAlON composites in creep were not failed under 250 MPa for more than 1000hr. Yb was concentrated in surface of the composite after creep test. And the layer without Yb was observed under surface layer.