| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a zirconium oxide raw material powder for producing a sintered compact excellent in thermal shock resistance and in capability of stabilizing electromotive force value while preventing cracking of the sintered compact even when the sintering temperature varies; especially a raw material powder suitable for an MSZ (MgO-solid solubilized Zirconia) sintered compact used for a solid electrolyte element. <P>SOLUTION: The zirconium oxide mixed powder contains 6-12 mol% magnesium oxide and 0.1-2 mol% calcium oxide. In the mixed powder, a part of the magnesium oxide and a part of the calcium oxide form a solid solution, and the monoclinic crystal ratio is 70-99%. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
