Design of interfaces for optimal mechanical properties in Al2O3/Mo laminated composites

Junjie Song, Yongsheng Zhang, Hengzhong Fan, Tianchang Hu, Litian Hu, Jianmin Qu

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)1123-1127
Number of pages5
JournalJournal of the European Ceramic Society
Volume35
Issue number3
DOIs
StatePublished - 16 May 2014

Keywords

  • Ceramic matrix composites (CMC)
  • Interface structure
  • Layered structures
  • Mechanical properties

Fingerprint

Dive into the research topics of 'Design of interfaces for optimal mechanical properties in Al2O3/Mo laminated composites'. Together they form a unique fingerprint.

Cite this