CAJ | 학술논문

采用放电等离子烧结（ SPS）方法在1800℃制备了不同类型碳化硅（ SiC）的BAS/SiC陶瓷基复合材料.采用阿基米德排水法、XRD、SEM及三点弯曲等分析测试手段研究了复合材料的致密度、物相组成、显微结构及室温力学性能.实验结果表明，BAS能有效地促进复合材料的致密化.复合材料中没有发生β-SiC→α-SiC相的转变. SiC晶粒均匀地分散在连续的BAS晶相中，且与BAS之间结合紧密.与以α-SiC为原始粉体制备的复合材料的室温抗弯强度相比，β-SiC为原始粉体制备的复合材料的室温抗弯强度提高13.93％。
채용방전등리자소결（ SPS）방법재1800℃제비료불동류형탄화규（ SiC）적BAS/SiC도자기복합재료.채용아기미덕배수법、XRD、SEM급삼점만곡등분석측시수단연구료복합재료적치밀도、물상조성、현미결구급실온역학성능.실험결과표명，BAS능유효지촉진복합재료적치밀화.복합재료중몰유발생β-SiC→α-SiC상적전변. SiC정립균균지분산재련속적BAS정상중，차여BAS지간결합긴밀.여이α-SiC위원시분체제비적복합재료적실온항만강도상비，β-SiC위원시분체제비적복합재료적실온항만강도제고13.93％。
BAS/SiC ceramics matrix composites were synthesized with different SiC type by sparking plasma sintering( SPS)at 1800℃. Densification,phase composition,microstructure and room-temperature mechanical properties of the BAS/SiC composites were studied by means of Archimedes’principle,XRD,SEM and three-point bending methods. The results showed the BAS could benefit densification of the composites. XRD analysis showed no phase transformation happened from β-SiC to α-SiC. SiC grains uniformly dispersed in the continuous BAS grains with good bond. The flexural strength of the BAS/SiC composites sintered by original β-SiC powders was increased by 13. 93% in comparison with that of α-SiC composites.