Eight mole percent yttria stabilized zirconia powders by organic precursor route |
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Authors: | DS Patil K PrabhakaranRajiv Dayal C Durga PrasadNM Gokhale AB SamuiSC Sharma |
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Affiliation: | Ceramic Division, Naval Materials Research Laboratory, Defence Research and Development Organization, Shil Badlapur Road, Anandnagar P.O., Addl. Ambernath, Thane 421506, Maharashtra, India |
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Abstract: | An organic precursor-mixing route has been developed for preparation of 8 mol% yttria stabilized zirconia (8YSZ) ceramics. Polymeric salt of succinic acid with yttrium and zirconium has been prepared separately by treating sodium succinate with yttrium chloride and zirconyl chloride followed by washing with water and drying at 120 °C. Thorough mixing of the two salts in stoichiometric proportions by planetary ball milling followed by calcination at 850 °C resulted in a precursor powder containing nanocrystalline (∼40 nm) monoclinic zirconia, tetragonal YSZ, cubic YSZ and yttria. Compacts prepared after deagglomeration of powder by planetary ball milling produce 8YSZ ceramics having density 99.3% TD on sintering at 1550 °C for 2 h. |
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Keywords: | C Ionic conductivity Solid oxide fuel cell Yttria stabilized zirconia Organic precursor |
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