Sintering process for electrical feedthroughs
AssigneeHeraeus Deutschland GmbH & Co. KG
InventorsLeoni Wilhelm, Ulrich Hausch, Robert Dittmer
Life of this patent
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Abstract
One aspect relates to a process for producing a sintered workpiece, which includes sintering of a ceramic material at a temperature of at least 1000° C. and in an atmosphere, in the case of which the partial pressure of atmospheric air is reduced to less than 10−6-times, based on the ambient air at the same temperature under equilibrium conditions.
Claims12
A process for producing a sintered workpiece, comprising pre-sintering of a ceramic material at a temperature of more than 1000° C. and less than 1600° C. for 1 hour, then further sintering of the ceramic material maximally for 1 hour at a temperature of more than 1600° C. and in an atmosphere, in the case of which the partial pressure of atmospheric air is reduced to less than 10−6-times, based on the ambient air at the same temperature under equilibrium conditions, wherein the ceramic material comprises a metal oxide selected from a group consisting of alumina (Al2O3), magnesia (MgO), zirconia (ZrO2), aluminum titanate (Al2TiO5), and piezoceramics, or a combination thereof, wherein the ceramic material comprises a cermet, wherein the cermet comprises a precious metal, and wherein the precious metal is selected from a group consisting of platinum, silver, gold, tantalum, molybdenum, and titanium.
Dependencies are inferred from the claim text.