Partially stabilized zirconia and its application to electronica

Details Partially stabilized zirconia and its application to electronica Partially stabilized zirconia and its application to electronica

1992-05-26

1995-05-30

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204424, 204426, 501104, G01N 2726, C04B 3548

Patent

active

054198275

ABSTRACT:
Partially stabilized zirconia is disclosed which contains yttrium oxide; an MgO ingredient in the grain boundaries; and the remainder being zirconium oxide and unavoidable impurities. Preferably a critical temperature difference of the partially stabilized zirconia is larger than or equal to 340.degree. C.
The partially stabilized zirconia may be suitably used as a solid electrolyte body in an electrochemical device with at least a pair of electrodes.
An MgO ingredient and, preferably an Al.sub.2 O.sub.3 and a SiO.sub.2 ingredients as well are believed to be present in the grain boundary in the partially stabilized zirconia and responsible for excellent thermal shock resistance.

REFERENCES:
patent: 4181579 (1980-01-01), Booth
patent: 4183798 (1980-01-01), Esper et al.
patent: 4820667 (1989-04-01), Tsunekawa et al.
patent: 5008221 (1991-04-01), Ketcham
"Zirconia Ceramics" Uchida-Roukakuho: Tokyo: 1989: pp. 221-230 No month available.

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