Publication detail

Mechanical properties of zirconia core-shell rods with porous core and dense shell prepared by thermoplastic co-extrusion

KAŠTYL, J. CHLUP, Z. CLEMENS, F. TRUNEC, M.

Original Title

Mechanical properties of zirconia core-shell rods with porous core and dense shell prepared by thermoplastic co-extrusion

Type

journal article in Web of Science

Language

English

Original Abstract

Bi-layered zirconia rods of core-shell geometry with a porous core of different core porosities and a dense shell of various shell thicknesses were investigated. Core-shell structures were successfully prepared by thermoplastic co-extrusion of assembled feedrods. For comparison, non-layered rods with different porosities and tubes were also prepared. Mechanical properties of sintered core-shell rods were determined and compared with the properties of non-layered rods and tubes. Increasing porosity in the core of the core-shell rods decreased Young’s modulus and the dense shell improved the fracture resistance of the core-shell rods against bending loading. The fracture force of core-shell rods was in all cases considerably higher than the fracture force of non-layered porous rods or tubes with the same Young’s modulus. The fracture behaviour of core-shell rods and tubes was analysed and correlated with the calculated stress distribution in these structures. The principle of the core-shell concept was described and discussed.

Keywords

Zirconia; Co-extrusion; Core-shell; Porous structure; Mechanical properties

Authors

KAŠTYL, J.; CHLUP, Z.; CLEMENS, F.; TRUNEC, M.

Released

1. 6. 2017

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Year of study

37

Number

6

State

United Kingdom of Great Britain and Northern Ireland

Pages from

2435

Pages to

2443

Pages count

9

URL

http://www.sciencedirect.com/science/article/pii/S0955221917300742

BibTex

@article{BUT133331,
  author="Jaroslav {Kaštyl} and Zdeněk {Chlup} and Frank {Clemens} and Martin {Trunec}",
  title="Mechanical properties of zirconia core-shell rods with porous core and dense shell prepared by thermoplastic co-extrusion",
  journal="Journal of the European Ceramic Society",
  year="2017",
  volume="37",
  number="6",
  pages="2435--2443",
  doi="10.1016/j.jeurceramsoc.2017.02.006",
  issn="0955-2219",
  url="http://www.sciencedirect.com/science/article/pii/S0955221917300742"
}