The effect of dopant addition on the superplastic flow and tensile elongation in TZP was examined. ZrO2-3mol%Y2O3-1.0mol%GeO2-0.5mol% Nd2O3(TZP-1Ge-1Nd) exhibits higher tensile elongations of more than 600% at 1400°C and lower flow stresses than TZP(ZrO2-3mol% Y2O3). This reduction in flow stress is mainly caused by the codoping of GeO2 with other elements. The peak temperature for the nominal elongation decrease is shown by TZP-1Ge-1Nd, it is suggested that the reason for the maximum elongation with respect to temperature is caused by the reduction in flow stress of GeO2 and that of restricted ductility at high temperatures due to Nd2O3.
|Number of pages||6|
|Journal||Key Engineering Materials|
|Publication status||Published - 2000|
|Event||Proceedings of the 1999 8th International Conference on Creep and Fracture of Engineering Materials and Structures - Tsukuba, Jpn|
Duration: 1999 Nov 1 → 1999 Nov 5