Method for producing a connection between two ceramic parts—in particular, of parts of a pressure sensor

US10435330B2 · kind B2 · utility

Assignee

• Endress+Hauser SE+Co. KG · DE

Inventors

• Ulfert Drewes · Bad Hersfeld, DE
• Nils Ponath · Lörrach, DE
• Andreas Rossberg · Bad Säckingen, DE
• Anh Tuan Tham · Berlin, DE

Key dates

• Filing date: Aug 19, 2015
• Grant date: Oct 8, 2019
• Expiry date: Sep 8, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2237/72
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method for producing a connection between two surfaces or surface sections of two ceramic parts comprises: provision of a first ceramic part and of a second ceramic part; provision of an active brazing solder material on at least one surface section of at least one of the ceramic parts; and heating the active brazing solder in a vacuum brazing process. The whole active brazing solder material is provided for connecting the first and the second ceramic part by a sputtering method, wherein at least one surface section of at least one of the ceramic parts, preferably of the two ceramic parts, is layered with a layer sequence of individual components of the active brazing solder material, wherein the average strength of the layers of an individual component of the active brazing solder is no more than 0.5%, in particular not more than 0.2%, preferably not more than 0.1% and especially preferably not more than 0.05% of the strength of the joining region.