Structure, luminescence, mechanical and in vitro behavior of zirconia toughened alumina due to terbium substitutions.

Author(s) Ponnilavan, V.; Khan, M.Imran K.; Dhayalan, A.; Kannan, S.
Journal Mater Sci Eng C Mater Biol Appl
Date Published 2019 Sep

The significance of Tb inclusions at the zirconia toughened alumina (ZTA) structure was explored. The influence of Tb content at the crystal structures of ZrO and AlO and the resultant optical, mechanical, magnetic and cytotoxicity properties were deliberated. The critical role of Tb to attain a structurally stable ZTA until 1500 °C is ensured. Depending on the Tb content, either tetragonal zirconia (t-ZrO) or cubic zirconia (c-ZrO) structures were stabilized while the propensity of Tb reaction with AlO to yield TbAlO is transpired only after exceeding the occupancy limit in ZrO. The green emission and paramagnetic features are imparted by the Tb inclusions at the ZTA structure. Dense and pore free microstructures with a direct impact on the improved mechanical features of ZTA is empowered by the presence of Tb. Further, the results from MTT assay and live/dead cell staining ensured the negligence of Tb contained ZTA systems to induce toxicity.

DOI 10.1016/j.msec.2019.05.011
ISSN 1873-0191
Citation Mater Sci Eng C Mater Biol Appl. 2019;102:810819.

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