Co-extrusion of zirconia core-shell rods with controlled porosity in the core

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F18%3APU129389" target="_blank" >RIV/00216305:26620/18:PU129389 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2041%2004.pdf" target="_blank" >http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2041%2004.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2298/PAC1803231K" target="_blank" >10.2298/PAC1803231K</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Co-extrusion of zirconia core-shell rods with controlled porosity in the core

Popis výsledku v původním jazyce

A method for manufacturing bi-layered zirconia rods of core-shell geometry with a porous core and a dense shell has been developed. Core-shell rods were successfully prepared by thermoplastic co-extrusion of assembled feed rods composed of core and shell zirconia feedstocks. Rheological analysis and adjustment of the feedstock viscosities enabled co-extrusion of regular core-shell rods of uniform shell thickness. Tapioca starch was used as a pore-forming agent in the core feedstock. Binder removal and high temperature treatment had to be modified in order to safely remove the starch particles. Sintering analysis revealed constrained sintering of porous cores in the core-shell rods due to the rigid dense shell, which resulted in an increased porosity in the core. Defect-free core-shell rods with a core porosity of up to 40% and different thicknesses of the dense shell were prepared.

Název v anglickém jazyce

Co-extrusion of zirconia core-shell rods with controlled porosity in the core

Popis výsledku anglicky

A method for manufacturing bi-layered zirconia rods of core-shell geometry with a porous core and a dense shell has been developed. Core-shell rods were successfully prepared by thermoplastic co-extrusion of assembled feed rods composed of core and shell zirconia feedstocks. Rheological analysis and adjustment of the feedstock viscosities enabled co-extrusion of regular core-shell rods of uniform shell thickness. Tapioca starch was used as a pore-forming agent in the core feedstock. Binder removal and high temperature treatment had to be modified in order to safely remove the starch particles. Sintering analysis revealed constrained sintering of porous cores in the core-shell rods due to the rigid dense shell, which resulted in an increased porosity in the core. Defect-free core-shell rods with a core porosity of up to 40% and different thicknesses of the dense shell were prepared.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Processing and Application of Ceramics

ISSN

1820-6131

e-ISSN

2406-1034

Svazek periodika

12

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

RS - Srbská republika

Počet stran výsledku

10

Strana od-do

231-240

Kód UT WoS článku

000446121300004

EID výsledku v databázi Scopus

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