Publication result detail

Improving contact damage resistance of spinel translucent ceramics through a multi-layer design

NAJAFZADEHKHOEE, A.; JABR, A.; TALIMIAN, A.; PAPŠÍK, R.; DRDLÍK, D.; MACA, K.; GALUSEK, D.; BERMEJO, R.

Original Title

Improving contact damage resistance of spinel translucent ceramics through a multi-layer design

English Title

Improving contact damage resistance of spinel translucent ceramics through a multi-layer design

Type

WoS Article

Original Abstract

The brittle response of transparent spinel ceramics to contact damage is limiting their application as an alternative to glasses and single crystals. In this work, we explore a strategy to enhance the contact damage resistance of spinel ceramics by embedding alumina layers in a multi-layer architecture. Crack initiation upon Hertzian indentation was investigated in MgAl2O4 - Al2O3 laminates and compared to their corresponding monoliths. Contact stresses during loading were analyzed using finite element simulations by considering the elastic properties of the layers and contact non-linearities. Results were analyzed using Weibull statistics. It was found that the effect of in-plane residual stresses on crack formation in the laminate depends on the disposition of the compressive spinel layers, either at the surface or embedded in the structure. Embedding alumina between spinel layers increased the load-bearing capability before crack initiation by similar to 70 % compared to spinel, offering a promising approach to enhance contact damage resistance.

English abstract

The brittle response of transparent spinel ceramics to contact damage is limiting their application as an alternative to glasses and single crystals. In this work, we explore a strategy to enhance the contact damage resistance of spinel ceramics by embedding alumina layers in a multi-layer architecture. Crack initiation upon Hertzian indentation was investigated in MgAl2O4 - Al2O3 laminates and compared to their corresponding monoliths. Contact stresses during loading were analyzed using finite element simulations by considering the elastic properties of the layers and contact non-linearities. Results were analyzed using Weibull statistics. It was found that the effect of in-plane residual stresses on crack formation in the laminate depends on the disposition of the compressive spinel layers, either at the surface or embedded in the structure. Embedding alumina between spinel layers increased the load-bearing capability before crack initiation by similar to 70 % compared to spinel, offering a promising approach to enhance contact damage resistance.

Keywords

Transparent; Contact damage; Multi-layers; Residual stresses; Hertzian indentation

Key words in English

Transparent; Contact damage; Multi-layers; Residual stresses; Hertzian indentation

Authors

NAJAFZADEHKHOEE, A.; JABR, A.; TALIMIAN, A.; PAPŠÍK, R.; DRDLÍK, D.; MACA, K.; GALUSEK, D.; BERMEJO, R.

Released

01.04.2025

Publisher

Elsevier

Location

London

ISBN

1873-619X

Periodical

Journal of the European Ceramic Society

Volume

45

Number

4

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

9

Pages count

9

URL

https://www.sciencedirect.com/science/article/pii/S0955221924009440

Full text in the Digital Library

http://hdl.handle.net/11012/251066

BibTex

@article{BUT193824,
  author="Aliasghar {Najafzadehkhoee} and Abdullah {Jabr} and Ali {Talimian} and Roman {Papšík} and Daniel {Drdlík} and Karel {Maca} and Dušan {Galusek} and Raul {Bermejo}",
  title="Improving contact damage resistance of spinel translucent ceramics through a multi-layer design",
  journal="Journal of the European Ceramic Society",
  year="2025",
  volume="45",
  number="4",
  pages="1--9",
  doi="10.1016/j.jeurceramsoc.2024.117071",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221924009440"
}

Documents

1-s2.0-S0955221924009440-main