TY - JOUR
T1 - Design of interfaces for optimal mechanical properties in Al2O3/Mo laminated composites
AU - Song, Junjie
AU - Zhang, Yongsheng
AU - Fan, Hengzhong
AU - Hu, Tianchang
AU - Hu, Litian
AU - Qu, Jianmin
N1 - Publisher Copyright:
© 2014 Elsevier Ltd.
PY - 2014/5/16
Y1 - 2014/5/16
N2 - High-performance Al2O3/Mo laminated composites are potential candidates for space applications because of their excellent self-lubricating and mechanical performance. This study aims at revealing the mechanisms of how interfacial morphology affects the mechanical properties of Al2O3/Mo laminated composites. Four types of micro-textures of different densities were produced by solid-state pulse Nd:YAG laser on the surface of a Al2O3 green body. Al2O3/Mo laminated composites with different interfacial morphologies were prepared by laser-texturing and hot-pressing. It is found that the self-locking function of a regular serrated interface improves the interfacial bonding strength and controls the residual stress of materials, thus realizing the optimization of materials. The toughness, work of fracture and strength of the materials could reach 8.0MPam1/2, 1179Jm-2 and 293MPa, which were 2.1 times, 6.6 times and 1.2 times higher than those of monolithic Al2O3 ceramics, respectively.
AB - High-performance Al2O3/Mo laminated composites are potential candidates for space applications because of their excellent self-lubricating and mechanical performance. This study aims at revealing the mechanisms of how interfacial morphology affects the mechanical properties of Al2O3/Mo laminated composites. Four types of micro-textures of different densities were produced by solid-state pulse Nd:YAG laser on the surface of a Al2O3 green body. Al2O3/Mo laminated composites with different interfacial morphologies were prepared by laser-texturing and hot-pressing. It is found that the self-locking function of a regular serrated interface improves the interfacial bonding strength and controls the residual stress of materials, thus realizing the optimization of materials. The toughness, work of fracture and strength of the materials could reach 8.0MPam1/2, 1179Jm-2 and 293MPa, which were 2.1 times, 6.6 times and 1.2 times higher than those of monolithic Al2O3 ceramics, respectively.
KW - Ceramic matrix composites (CMC)
KW - Interface structure
KW - Layered structures
KW - Mechanical properties
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U2 - 10.1016/j.jeurceramsoc.2014.09.023
DO - 10.1016/j.jeurceramsoc.2014.09.023
M3 - Article
AN - SCOPUS:84956577053
SN - 0955-2219
VL - 35
SP - 1123
EP - 1127
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 3
ER -