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		Al2O3填料对SiCf/BN/SiC复合材料弯曲强度和高温吸波性能的影响
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			Effects of Micron Al2O3 Filler on Flexural Strength and High-temperature Microwave Absorbing Properties of SiCf/BN/SiC Composites
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| 图4. 不同Al2O3含量的复合材料SiC基体的SEM照片 | 
| Fig.4. Morphologies of SiC matrix with various Al2O3 contents (a) without Al2O3; (b) 5% Al2O3; (c) 10% Al2O3; (d) 15% Al2O3; (e) 20% Al2O3 | 
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