Publication detail
Effect of powder treatment on injection moulded zirconia ceramics
TRUNEC, M. DOBŠÁK, P. CIHLÁŘ, J.
Czech title
Vliv úpreavy prášku na injekčně vstřikovanou ZrO2 keramiku
English title
Effect of powder treatment on injection moulded zirconia ceramics
Type
journal article - other
Language
en
Original abstract
Agglomerated fine zirconia powder was exposed to dry and wet ball milling and to wet mixing. The subject of study was the effect of powder treatment on the disintegration of agglomerated particles, on the rheological properties of thermoplastic ceramic stabilized tetragonal zirconia polycrystalline ceramics (Y-TZP). Test specimens in the shape of bars and discs were produced by injection moulding of ceramic mixtures containing 52.5 and 49vol% of powder. The powder treatment was found to yield improve properties of sintered specimens in the case of 52.5vol% of powder in the ceramic mixture. However, the same or even better mechanical properties of sintered components were found when the loading of ceramic mixture was reduced to 49vol% of powder and and non-treated powder was used.
Czech abstract
Jemný aglomerovaný ZrO2 prášek byl upraven suchým a mokrým mletím a mísením za mokra. Byl studován vliv úpravy prášku na rozrušení aglomerovaných částic, na reologické vlastnosti termoplastických keramických směsí a na vlastnosti slinuté ytriem stabilizované tetragonální keramiky (Y-TZP). Zkušební tělesa, trámky a disky, byly připraveny injekčním vstřikováním keramických směsí s obsahem 52,5 a 49 obj% prášku. Bylo zjištěno, že úprava prášku vedla k zlepšení reologických vlastností keramických směsí a mechanických vlastností slinutých vzorků v případě 52,5 obj% prášku v keramické směsi. Stejné nebo lepší mechanické vlastnosti slinutých dílů ve srovnání s ostatními vzorky však byly zjištěny při snížení plnění keramické směsi na 49 obj% prášku a použití neupraveného prášku.
English abstract
Agglomerated fine zirconia powder was exposed to dry and wet ball milling and to wet mixing. The subject of study was the effect of powder treatment on the disintegration of agglomerated particles, on the rheological properties of thermoplastic ceramic stabilized tetragonal zirconia polycrystalline ceramics (Y-TZP). Test specimens in the shape of bars and discs were produced by injection moulding of ceramic mixtures containing 52.5 and 49vol% of powder. The powder treatment was found to yield improve properties of sintered specimens in the case of 52.5vol% of powder in the ceramic mixture. However, the same or even better mechanical properties of sintered components were found when the loading of ceramic mixture was reduced to 49vol% of powder and and non-treated powder was used.
Keywords in English
injection moulding, mechanical properties, microstructure-final, milling, ZrO2
RIV year
2000
Released
01.01.2000
Publisher
Elsevier Science
ISSN
0955-2219
Journal
Journal of the European Ceramic Society
Volume
20
Number
7
Pages count
8
BIBTEX
@article{BUT39261,
author="Martin {Trunec} and Petr {Dobšák} and Jaroslav {Cihlář},
title="Effect of powder treatment on injection moulded zirconia ceramics",
journal="Journal of the European Ceramic Society",
year="2000",
volume="20",
number="7",
month="January",
publisher="Elsevier Science",
issn="0955-2219"
}