Percolative mechanism of aging in zirconia-containing ceramics for medical applications

被引：65
作者：
Pecharromán, C
Bartolomé, JF
Requena, J
Moya, JS
Deville, S
Chevalier, J
Fantozzi, G
Torrecillas, R
机构：
[1] CSIC, ICMM, E-28049 Madrid, Spain
[2] Inst Natl Sci Appl, Dept Res Met & Phys Properties Mat, Associate Res Unit 5510, F-69621 Villeurbanne, France
[3] CSIC, Inst Nacl Carbon, Oviedo 33011, Spain
来源：
ADVANCED MATERIALS | 2003年 / 15卷 / 06期
关键词：
D O I：
10.1002/adma.200390117
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Recently, several episodes of fracture of zirconia ceramic femoral heads of total hip prostheses have alarmed the medical and scientific community regarding aging problems in zirconia prostheses. Such fractures cause immediate local tissue reactions, which require urgent medical intervention to prevent further complications. Thus, an upper limit of yttria-stabilized zirconia (Y-TZP) concentration in alumina/Y-TZP composites was found to avoid future aging problems. This limit coincides with the percolation threshold measured by infrared (IR) reflectance in a series of alumina/Y-TZP composites.
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页码：507 / 511
页数：5
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