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

Al₂O₃填料对SiC_f/BN/SiC复合材料弯曲强度和高温吸波性能的影响

穆阳,李皓

Effects of Micron Al₂O₃ Filler on Flexural Strength and High-temperature Microwave Absorbing Properties of SiC_f/BN/SiC Composites

Yang MU,Hao LI

表1 不同Al₂O₃含量SiC_f/BN/SiC复合材料的性能

Table 1 Properties of SiC_f/BN/SiC composites with various Al₂O₃ contents

Al₂O₃ filler content	Porosity/%	Density/g·cm^-3	Flexural strength/MPa	Failure displacement/mm
(a) 0	13.6	2.10	238±6	0.32±0.03
(b) 5%	13.6	2.33	250±5	0.40±0.03
(c) 10%	13.7	2.36	295±6	0.45±0.03
(d) 15%	14.1	2.34	220±9	0.34±0.03
(e) 20%	14.4	2.36	187±8	0.27±0.03