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Title

Mechanically stable monoclinic zirconia–nickel composite

AuthorsAza Moya, Antonio H. de CSIC ORCID; Chevalier, Jérôme; Fantozzi, Gilbert; Schehl, Martin Rudolf; Torrecillas, Ramón CSIC ORCID CVN
KeywordsZirconia toughened alumina
Zirconia
Alumina
Total hip replacements
Slow crack growth
Threshold
Issue Date2002
PublisherElsevier
CitationBiomaterials 23(3): 937-945 (2002)
AbstractMono-phase bio-ceramics (alumina and zirconia) are widely used as femoral heads in total hip replacements (THR) as an alternative to metal devices. Unfortunately, the orthopaedic community reports significant in-vivo failures. Material scientists are already familiar with composites like alumina–zirconia. Since both are biocompatible, this could prove to be a new approach to implants. This paper deals with a new generation of alumina–zirconia nano-composites having a high resistance to crack propagation, and as a consequence may offer the option to improve lifetime and reliability of ceramic joint prostheses. The reliability of the above mentioned three bio-ceramics (alumina, zirconia and zirconia toughened alumina) for THR components is analysed based on the study of their slow crack-growth behaviour. The influence of the processing conditions on the microstructure development, of the zirconia toughened alumina composites and the effect of these microstructures, on its mechanical properties, are discussed.
Publisher version (URL)https://doi.org/10.1016/S0142-9612(01)00206-X
URIhttp://hdl.handle.net/10261/223481
DOIhttp://dx.doi.org/10.1016/S0142-9612(01)00206-X
ISSN0142-9612
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