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Extending the Lifetime of Ceramic Orthopaedic Implants
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2000
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Materials ScienceOrthopaedic BiomaterialsSynthetic Bone SubstituteEngineeringMechanical PropertiesMedicineOrthopaedic ImplantsCeramic MaterialOrthopaedicsNew GenerationBioceramicSurgeryImplantable DeviceImplantologyBiomaterialsOrthopaedic SurgeryAlumina–zirconia NanocompositesCeramic Orthopaedic Implants
A new generation of alumina–zirconia nanocomposites (see Figure: brighter phase, ZrO2; darker phase, Al2O3) for orthopaedic implants is described. These materials, prepared via a new colloidal synthesis route, are shown to have a high resistance to crack propagation. Thus it may be possible to improve the lifetime and reliability of ceramic joint prostheses.