Stabilized zirconia powder and a method of manufacturing a precursor thereof

文件类型：PDF文档
文件大小：102K
[Purpose] To provide a stabilized zirconium powder that uses an acidic aqueous solution as a starting material and that has excellent sintering properties at low temperatures, and stable quality, and to provide an inexpensive method for manufacturing a precursor thereof. [Solution] Stabilized zirconium powder is obtained by dissolving zirconium carbonate in an aqueous solution in which zirconium oxychloride is dissolved, to adjust the molar ratio of Zr/Cl in the aqueous solution, and then dissolving in the aqueous solution a compound containing a sulfate ion and a compound containing one or more stabilized elements selected from the group consisting of rare earth elements, magnesium, and aluminum, heating the aqueous solution to precipitate the basic sulfate salt of zirconium, and then substituting the sulfate ion of the precipitate of the basic sulfate salt of zirconium with a hydroxyl ion to form a hydroxide of zirconium, and co-depositing the stabilized element as a hydroxide together with the hydroxide of zirconium to obtain a precursor of stabilized zirconia powder, which is then sintered.