Lead-through or connecting element with improved thermal loading capability
AssigneeSchott AG
InventorsOliver FRITZ, Georg MEIER, Thomas FINK
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Abstract
A lead-through or connecting element is provided that includes an assembly having a carrier body of a high-temperature alloy, a functional element, and an at least partially crystallized glass. The crystallized glass is between a portion of the functional element and a portion of the carrier body. The carrier body subjects the crystallized glass to a compressive stress of greater than or equal to zero, at a temperature from at least 20° C. to more than 450° C. Also provided are a method for producing a lead-through or connecting element, the use of such a lead-through or connecting element, and to a measuring device including such a lead-through or connecting element.
Claims21
A lead-through or connecting element, comprising:
- a carrier body comprising a high-temperature alloy;
- a functional element;
- an at least partially crystallized glass, wherein the at least partially crystallized glass is arranged either between a portion of the functional element and a portion of the carrier body or within the portion of the carrier body, wherein the carrier body subjects the at least partially crystallized glass to a compressive stress of greater than or equal to zero at a temperature range from at least 10° C. to more than 450° C.;
- and
- an inversion temperature that corresponds to a maximum operating temperature with a deviation of +/−20%, wherein the maximum operating temperature is above 450° C.
A method for producing a lead-through or connecting element, comprising the method steps of:
- providing an at least partially crystallizable starting material;
- providing a carrier body having an interior volume;
- arranging at least a portion of the starting material in the interior volume to form an assembly;
- heating the assembly until a temperature is reached at which the starting material bears against and fuses to the portion of the carrier body;
- and
- cooling the arrangement until the starting material forms at least partially crystallizable glass.
Dependencies are inferred from the claim text.