Invention Grant
- Patent Title: Method for producing a connection between two ceramic parts—in particular, of parts of a pressure sensor
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Application No.: US15513320Application Date: 2015-08-19
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Publication No.: US10435330B2Publication Date: 2019-10-08
- Inventor: Ulfert Drewes , Nils Ponath , Andreas Rossberg , Anh Tuan Tham
- Applicant: Endress + Hauser GmbH + Co. KG
- Applicant Address: DE Maulburg
- Assignee: ENDRESS+HAUSER SE+CO.KG
- Current Assignee: ENDRESS+HAUSER SE+CO.KG
- Current Assignee Address: DE Maulburg
- Agency: Bacon & Thomas, PLLC
- Priority: DE102014113958 20140926
- International Application: PCT/EP2015/069074 WO 20150819
- International Announcement: WO2016/045884 WO 20160331
- Main IPC: B23K31/02
- IPC: B23K31/02 ; C04B37/00 ; B23K35/32 ; C23C14/04 ; C23C14/18 ; G01L9/00 ; B23K103/00

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.
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