Manufacturing of ZTA composites for biomedical applications

Author

Elezz, Mohamed Abou ; Kern, Frank ; Gadow, Rainer

Author_Institution

Graduate School of excellence in Advanced, Manufacturing Engineering, Stuttgart University, Allmandring 7b, D-70569, Germany

fYear

2012

fDate

10-11 Oct. 2012

Firstpage

1

Lastpage

5

Abstract

Zirconia toughened alumina (ZTA) ceramics are interesting materials for biomedical applications due to their high strength, hardness, fracture toughness, abrasion resistance and excellent biocompatibility. The manufacturing of biomedical ceramic components involves the development of an integrated production process, beginning with the conditioning of the raw materials to the final component. Near-net-shape manufacturing technology is used to achieve a significant improvement in quality, production efficiency and cost. ZTA containing 10 vol-% zirconia (1.5Y) was produced from submicron size powders. The rheological behavior of 10 vol-% zirconia ZTA was investigated in order to optimize the recipes and predict the molding behavior. ZTA was in-situ reinforced with 5 vol-% strontium hexa-aluminate platelets with the intention to improve the mechanical properties. Results show that reinforcement of hexa-aluminate platelets enhance bending strength and fracture toughness but reduce the hardness of injection molded ZTA.

Keywords

abrasion; alumina; bending strength; bioceramics; ceramic industry; composite materials; fracture toughness; hardness; injection moulding; powders; raw materials; rheology; zirconium compounds; ZTA ceramic abrasion resistance; ZTA ceramic bending strength enhancement; ZTA ceramic biocompatibility; ZTA ceramic fracture toughness enhancement; ZrO₂-Al₂O₃; biomedical applications; biomedical ceramic component manufacturing; in-situ reinforced ZTA composite manufacturing; injection molded ZTA ceramic strength hardness reduction; integrated production process; mechanical property improvement; molding behavior prediction; near-net-shape manufacturing technology; powders; raw material conditioning; recipe optimization; rheological behavior; strontium hexaaluminate platelet reinforcement; zirconia toughened alumina ceramics; Aging; Ceramics; Injection molding; Manufacturing; Mechanical factors; Strontium; ZTA; ceramic injection molding; mechanical properties; platelets;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering and Technology (ICET), 2012 International Conference on

Conference_Location

Cairo

Print_ISBN

978-1-4673-4808-9

Type

conf

DOI

10.1109/ICEngTechnol.2012.6396123

Filename

6396123