Porous titanium Microsphere sintering Bending strength Stiffness Metallic implantDevelopment of porous T16A14V samples by microsphere sintering
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Fecha
2012Materia/s Unesco
3328.16 Transferencia de Calor
3305.90 Transmisión de Calor en la Edificación
Resumen
Two differently sized microspheres were sintered at 1300 degrees C and 1400 degrees C from 2 to 8h in stoneware, alumina, yttria and zirconia moulds. Selecting the appropriate material to be used as a mould remains a critical issue given titanium's high reactivity at elevated temperatures. Optimum mechanical properties were obtained when sintering the smallest microspheres in yttria-coated moulds. Stiffness of the samples was lower than 40% of that of the bulk solid material, which comes closer to that of human cortical bone. Open and interconnected porosity was observed in all the specimens. (C) 2011 Elsevier B.V. All rights reserved.
Two differently sized microspheres were sintered at 1300 degrees C and 1400 degrees C from 2 to 8h in stoneware, alumina, yttria and zirconia moulds. Selecting the appropriate material to be used as a mould remains a critical issue given titanium's high reactivity at elevated temperatures. Optimum mechanical properties were obtained when sintering the smallest microspheres in yttria-coated moulds. Stiffness of the samples was lower than 40% of that of the bulk solid material, which comes closer to that of human cortical bone. Open and interconnected porosity was observed in all the specimens. (C) 2011 Elsevier B.V. All rights reserved.
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