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
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"
}