SINTERING ADDITIVES FOR CERAMIC DEVICES OBTAINABLE IN A LOW pO2 ATMOSPHERE
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United States of America Patent
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Issued Date -
Jan 9, 2014
app pub date -
Mar 9, 2012
filing date -
Mar 24, 2011
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Abandoned
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Abstract
The present invention provides a method for producing a ceramic device in a low pO2 atmosphere, comprising the steps of: providing a composition comprising a base material and a transition metal; wherein the base material for the first layer is selected from the group consisting of zirconate, cerate, titanate, lanthanate, aluminate, doped zirconia and/or doped ceria, wherein the dopants are selected from the group of Ca, Ga, Sc, Y, and lanthanide elements; forming a first layer of said composition, wherein said first layer is an electrolyte layer; forming at least one electrode layer or electrode precursor layer on one side or both sides of said first layer; and sintering the multilayer structure in a low pO2 atmosphere; characterized in that: the amount of the transition metal is from 0.01 to 4 mol %, based on the composition of the first layer; the oxygen partial pressure pO2 is 10″14 Pa or less; and the sintering temperature is in the range of from 700 to 1600° C.
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