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The ZrB 2 –20vol.% SiC composites were oxidized at a constant temperature of 900°C for 5, 30 and 60min, respectively. Some of the oxidized specimens were immersed in water to remove the B 2 O 3 glass from the surface in order to investigate the effect of surface microstructure and component on the flexural strength. The flexural strengths of immersed specimens are higher than...
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