Percolative Mechanism of Aging in Zirconia-Containing Ceramics for Medical Applications

✍ Scribed by C. Pecharromán; J.F. Bartolomé; J. Requena; J.S. Moya; S. Deville; J. Chevalier; G. Fantozzi; R. Torrecillas

• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 204 KB
• Volume: 15
• Category: Article
• ISSN: 0935-9648
• DOI: 10.1002/adma.200390117

✦ Synopsis

For biomedical applications, zirconia‐toughened alumina ceramics (see Figure) would be very appropriate materials, provided that the zirconia content is kept below the percolation threshold (upper limit of 16 vol.‐% 3Y‐TZP inside an alumina matrix). That the concept of a percolation threshold is relevant when talking about aging degradation, is demonstrated by comparing specular IR reflectance measurements with aging experiments.