Open AccessPreparation and Characterization of SiC/Al2O3 Composites
Author(s) -
Jinman Yu,
Zhi Wang,
Hao Wu,
Liu Zhang,
Fugang Qi,
Xueqian Zhang,
Tongwei Liu,
Xuye Wang
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/562/1/012009
Subject(s) - materials science , composite material , transgranular fracture , ceramic , characterization (materials science) , fracture (geology) , intergranular corrosion , intergranular fracture , grain boundary , ceramic matrix composite , microstructure , nanotechnology
The present research was focus on various SiC content adding to Al 2 O 3 matrix to improve the mechanical properties of Al 2 O 3 ceramic. The mechanical properties of the composites were characterized by XRD and SEM. The effect of SiC content on the mechanical properties of SiC/Al 2 O 3 composites was studied. The results show that SiC/Al 2 O 3 composites have the best comprehensive mechanical properties when the SiC content is 5vol.%. With the increase of SiC content, agglomeration phenomenon was obvious, pores at grain boundaries increased, fracture mode changed from transgranular fracture to intergranular fracture, and mechanical properties of the material got worse.