Paper Title:

Fabrication of Al2O3-ZrO2 (3Y-TZP) Composites with Graded Structures by Centrifugal Slip Casting Method

Periodical Materials Science Forum (Volumes 449 - 452)
Main Theme Designing, Processing and Properties of Advanced Engineering Materials
Edited by S.-G. Kang and T. Kobayashi
Pages 293-296
DOI 10.4028/www.scientific.net/MSF.449-452.293
Citation X.D. Li et al., 2004, Materials Science Forum, 449-452, 293
Online since March, 2004
Authors X.D. Li, Larry Wang, Tetsuhiko Onda, T. Akao, Motozo Hayakawa
Keywords Alumina-Zirconia Composites, Centrifugal Slip Casting, Functionally Graded Material (FGM), Mechanical Property
Price US$ 28,-
Article Preview
View full size
Abstract

Centrifugal casting method was used to fabricate composites with graded structures in alumina-zirconia system. The composition profiles of the graded composites showed three distinct regions, with a greater part of the specimen showing nearly linear variation of compositions. The composition profile can be varied by using zirconia powder of different size ranges. The top of the specimens showed nano-scaled microstructures. The composition profiles can also be varied by altering zirconia content in the starting suspension. It was found that the composites with graded structures showed higher bending strength than that of uniform composites. On the other hand, the specimens fractured with the lower zirconia content region being the crack initiate plane showed higher bending strength than that of fractured form higher zirconia content region.