Microstructure and mechanical properties of Al2O3/Al2O3 composite densified through a slurry infiltration and sintering process

• DOI: 10.1016/j.jmrt.2023.06.167
• Publication Date: 2023-06-20T06:24:21Z
• Authors: Haitao Liu; Ru Jiang; Xun Sun; Xiaofei Chen; Guihang Deng
• Keywords: Shear Strength

High fracture strength and toughness are vital requirements for the Al2O3/Al2O3 composites. This advanced structural material is composed of two-dimensional alumina fiber fabrics with porous matrices. However, composites exhibit low delamination resistance under shear stress. In this study, an as-fabricated composite was densified through a slurry infiltration sintering (SIS) process. The SIS-cycle-dependent mechanical properties were investigated. results showed that matrix strengthened, fibers unaffected after SIS With increasing cycles, flexural interlaminar strengths increased, whereas decreased. best performance reached six which had 414.7 ± 41.6 MPa, 25.6 3.1 11.0 0.3 MPa⋅m1/2. different changes in cycles attributed to densification enhanced interfacial bonding. process has potential improve without sacrificing damage tolerance.