Effect of powder treatment on injection moulded zirconia ceramics

Effect of powder treatment on injection moulded zirconia ceramics

Článek recenzovaný mimo WoS a Scopus

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.

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.

injection moulding, mechanical properties, microstructure-final, milling, ZrO2

TRUNEC, M.; DOBŠÁK, P.; CIHLÁŘ, J.

01.01.2000

Elsevier Science

0955-2219

Journal of the European Ceramic Society

20

7

Spojené království Velké Británie a Severního Irska

859

8