Characterisation of mechanical and fracture behaviour of Al2O3/ZrO2/BaTiO3 laminate by indentation

Hadraba, Hynek; Chlup, Zdeněk; Drdlík, Daniel; Siska, Filip

doi:10.1016/j.jeurceramsoc.2020.04.024

Cited by 12 publications

(1 citation statement)

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“…In recent years, cyclic indentation has been used to assess the behavior of laminated piezoelectric composites which are used as health monitoring sensors, and a noninvasive method for piezoelectric functionalization was proposed by interleaving a PZT layer between glass-fiber reinforced polymer layers (Gino et al, 2022). Indentation has also been utilized to investigate mechanical properties, such as hardness, elastic modulus, and crack propagation, in the laminated piezoelectric composite with Al 2 O 3 , ZrO 2 , and BaTiO 3 layers (Hadraba et al, 2020). The tougher ceramics, such as Al 2 O 3 and ZrO 2 were demonstrated to improve the strength of the laminated structure by overcoming the brittleness of BaTiO 3 .…”

Section: Introductionmentioning

confidence: 99%

Nanoindentation response of small-volume piezoelectric structures and multi-layered composites: modeling the effect of surrounding materials

Cheng,

Wu,

Venkatesh

2023

Front. Electron. Mater

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With piezoelectric small-volume composites gaining importance in smart device applications and nanoindentation being recognized as a versatile method for assessing the properties of layer materials, the present study is focused on the indentation response of the small-volume piezoelectric structures multi-layered composites. In particular, the effects of the nature of the substrate and surrounding materials, on the indentation response of piezoelectric nanocomposites, such as nanoislands, nanowires, and multi-layered composites are investigated. By developing three-dimensional finite element modeling, the complex interaction between the fundamental elastic, piezoelectric and dielectric properties of the piezoelectric materials and the elastic, plastic and electrically conducting or insulating properties of the surrounding materials, on the indentation response of the layered composites is analyzed. It is found that: (i) a substrate material that is elastically stiffer enhances the mechanical indentation stiffness and the electric indentation stiffness while plastic deformation in the substrate causes a reduction in the mechanical and electrical indentation stiffness; (ii) the effective piezoelectric and mechanical indentation stiffnesses of piezoelectric multi-layered composites are bounded by the corresponding characteristics of the bulk material counterparts from which the individual layers are constructed; (iii) electrically conducting surrounding materials produce a softening effect while insulating materials enhance the electrical indentation stiffness resulting in more charges being accumulated during the indentation process.

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Section: Introductionmentioning

confidence: 99%