alexa Self-joining of zirconia hydroxyapatite composites using plastic deformation process.


Bioceramics Development and Applications

Author(s): Singh D, de la Cinta LorenzoMart, GutirrezMora F, Routbort JL, Case ED

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Abstract A plastic deformation process was demonstrated to self-join 3 mol.\% yttria partially stabilized zirconia (3Y-TZP)/hydroxyapatite (HA) composites. The 3Y-TZP/40 vol.\% HA composites were fabricated by conventional ceramic processing by cold pressing premixed 3Y-TZP and HA powders into pellets. Densification ( approximately 90\%) of composites was achieved by sintering composite powder compacts at 1450 degrees C for 5h. Optimum self-joining of 3Y-TZP/40 vol.\% HA composites was obtained at 1300 degrees C for a strain rate of 5 x 10(-5)/s. The flow stress during joining was 40 MPa. Microstructural and mechanical characterizations of the joint interface demonstrated that there were no discernible differences between the joint and the composite material away from the interface. This article was published in Acta Biomater and referenced in Bioceramics Development and Applications

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