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"
}