Can I read Subcritical Crack Growth Behavior of Dispersion Oxide Ceramics on EtoBox?

Subcritical Crack Growth Behavior of Dispersion Oxide Ceramics by Armin Kirsten; Sabine Begand; Thomas Oberbach; Rainer Telle; Horst Fischer is a Medicine article available to read on EtoBox.

What is Subcritical Crack Growth Behavior of Dispersion Oxide Ceramics about?

## Abstract Zirconia (Y‐TZP) is used as material for components of implants and prostheses because of its high short‐term strength. The mechanical long‐term reliability, however, is limited for Y‐TZP because of hydrothermal aging effects and a pronounced tendency for subcritical crack growth. The hypothesis of this study was that a substantial amount of alumina in a zirconia matrix can help to significantly suppress subcritical crack growth and thereby improve the mechanical long‐term reliability. The Weibull parameters as well as the parameters of the subcritical crack growth were determined for Alumina, Y‐TZP, and two dispersion ceramics, that is Alumina Toughened Zirconia (ATZ, 20% alumina/80% Y‐TZP), and Zirconia Toughened Alumina (ZTA, 75% alumina/25% Y‐TZP). The long‐term failure probability as a function of service time was predicted for the four ceramics. The parameter __n__ of the subcritical crack growth was approx. 80% higher for ATZ compared to Y‐TZP. In consequence, the estimated lifetime revealed a significant better mechanical long‐term reliability for ATZ. It can be concluded that tailored dispersion oxide ceramics can address the aging problem of monolithic zirconi

Who reads Subcritical Crack Growth Behavior of Dispersion Oxide Ceramics?

Author

Armin Kirsten; Sabine Begand; Thomas Oberbach; Rainer Telle; Horst Fischer

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1552-4973)

Published

2010

Language

EN

Field

Medicine (Health Sciences)