The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2018
Filed:
Oct. 28, 2013
Endress+hauser Gmbh+co. KG, Maulburg, DE;
Friedrich-schiller-universität, Jena, DE;
Andreas Rossberg, Bad Sackingen, DE;
Elke Schmidt, Bad Sackingen, DE;
Markus Rettenmayr, Jena, DE;
Peter Siegmund, Jena, DE;
ENDRESS + HAUSER GMBH + CO. KG, Maulburg, DE;
Abstract
An assembly comprising: two ceramic bodies, which are joined by means of a joint of an active hard solder, or braze, wherein the active hard solder, or braze, has a continuous core volume, which is spaced, in each case, from the ceramic bodies by at least 1 μm, and an average composition Cwith a liquidus temperature T(C), wherein the composition Chas a coefficient of thermal expansion α(C), wherein α(C)=m·α(K), wherein m≤1.5, especially m≤1.3 and preferably m≤1.2, wherein α(K) is the average coefficient of thermal expansion of the ceramic material of the ceramic bodies, wherein the joint has boundary layers, which border on the ceramic body, wherein at least one of the boundary layers, which lies outside of the core volume, has an average composition Cwith a liquidus temperature T(C), which lies not less than 50 K, preferably not less than 100 K, and especially preferably not less than 200 K, under the liquidus temperature T(C) of the average composition Cof the core volume.