Invention Grant
- Patent Title: Method for assembling a metal part and a ceramic part, and electrical device, in particular a capacitive sensor, produced by said method
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Application No.: US17275815Application Date: 2019-09-13
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Publication No.: US11756732B2Publication Date: 2023-09-12
- Inventor: Mathieu Valat , Jean-Pierre Ruffini
- Applicant: FOGALE SENSORS
- Applicant Address: FR Nîmes
- Assignee: FOGALE SENSORS
- Current Assignee: FOGALE SENSORS
- Current Assignee Address: FR Nîmes
- Agency: Greer, Burns & Crain, Ltd
- Priority: FR 58289 2018.09.14
- International Application: PCT/EP2019/074540 2019.09.13
- International Announcement: WO2020/053415A 2020.03.19
- Date entered country: 2021-03-12
- Main IPC: H01G4/008
- IPC: H01G4/008 ; B22F3/15 ; B22F7/06
Abstract:
A method for the assembly of a metal part and a ceramic part, including the following steps:
supplying a solid ceramic part of the alumina type;
supplying a solid metal part, the metal being selected from platinum and tantalum, or an alloy including a majority of one of these metals;
depositing at least one layer, called interface layer, on at least one of the solid parts, the interface layer containing magnesium oxide;
bringing into contact the solid metal part and the solid ceramic part such that the interface layer is located between the solid parts; and
hot densification under pressure of the solid parts brought into contact, to create a close bond between the solid parts and form a spinel from the interface layer. An electrical device, such as a capacitive sensor having a sensitive part produced according to the present method, is also provided.
supplying a solid ceramic part of the alumina type;
supplying a solid metal part, the metal being selected from platinum and tantalum, or an alloy including a majority of one of these metals;
depositing at least one layer, called interface layer, on at least one of the solid parts, the interface layer containing magnesium oxide;
bringing into contact the solid metal part and the solid ceramic part such that the interface layer is located between the solid parts; and
hot densification under pressure of the solid parts brought into contact, to create a close bond between the solid parts and form a spinel from the interface layer. An electrical device, such as a capacitive sensor having a sensitive part produced according to the present method, is also provided.
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