Synthesis of Lithium-doped Zirconia Nanoceramics ofControlled Oxygen Vacancies
Keywords: Stabilised zirconia, ceramics, nanoceramics, microstructure, synthesis, cationic doping
AbstractDoping of lithium (Li+) cations results in stabilised zirconia, especially in tetragonal (t)crystal structure, i.e., Li+: t-ZrO2. It is useful to vary oxygen vacancies in Li+: ZrO2 powders. TheLi+: t-ZrO2 powder having 1-5 mol per cent Li+, are obtained by using a novel chemical methodof a polymer precursor, which consists of Li+ and Zr4+ cations capping in polymer molecules ofpolyvinyl alcohol (PVA) and sucrose. The results are analysed in terms of XRD and microstructureof Li+: t-ZrO2 powders prepared under specific conditions of heating the precursor in air atelevated temperatures. The polymer precursor consists of fibrils of average 120 m length and0.5–1.0 m dia. A refined Li+: t-ZrO2 powder (15-25 nm crystallite size) occurs after heating theprecursor at 500–600 °C for 2 h in air.
How to Cite
Mohapatra, S., & Ram, S. (2007). Synthesis of Lithium-doped Zirconia Nanoceramics ofControlled Oxygen Vacancies. Defence Science Journal, 57(1), 41-46. https://doi.org/10.14429/dsj.57.1727
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