Patent ID: 8546284
Filing Date: 2013-10-01
Classification: C01G,C01P,C04B

Abstract:
1. A process for the production of plasma sprayable yttria stabilized zirconia (YSZ), which comprises: (a) dispersing yttrium (Y) precursor in distilled water to obtain dispersed yttrium precursor; (b) dissolving the dispersed precursor in concentrated nitric acid to get acidic solution of yttrium nitrate precursor; (c) heating and simultaneously adding zirconia (Zr) precursor to the acidic solution of yttrium nitrate precursor; (d) subjecting the solution so obtained to magnetic stirring for at least 30 minutes to effect thorough molecular mixing in the nitrate precursor solution; (e) adding precipitating agent to the resultant nitrate precursor solution until a pH of the solution reaches 10 and a precipitate containing Y and Zr is produced; (f) allowing the precipitate containing Y and Zr to settle; (g) filtering the precipitate; (h) washing the precipitate with distilled water followed by ethanol; (i) drying the washed precipitate; and, (j) calcining the dried precipitate.