Brazed metal-ceramic components for space applications

Elsener, H.R.; Rheingans, B.; Jeurgens, L. P. H.; Burgdorf, T.; Brüngger, S.; Piazza, D.; Wurz, P. (2019). Brazed metal-ceramic components for space applications. In: Löt 2019. DVS Berichte: Vol. 353. DVS Media

[img] Text
LoeT2019DVSBerichteBand3532019207-214.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (5MB) | Request a copy

Brazed metal-ceramic components play an important role in the manufacturing of specialized scientific instruments for space applications, where a compact, lightweight, and robust construction is always needed. Soldering and brazing are the best joining techniques if dissimilar materials are involved. For the current ESA mission JUICE, an optimized ion source main structure consisting of a stack of concentric metal electrodes and ceramic rings was to be brazed in vacuum. In the improved design one-piece electrodes manufactured from a molybdenum-copper composite were used having the same coefficient of thermal expansion as alumina. Different coating systems were evaluated for the composite material. The effectiveness of TiAlN as diffusion barrier for gold could be demonstrated in a first brazing test between the coated Mo85Cu15 and metallized Al₂O₃ parts joined with Incusil® ABATM. Several main structures satisfying all technical requirements were successfully brazed.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences
08 Faculty of Science > Physics Institute

UniBE Contributor:

Brüngger, Stefan; Piazza, Daniele and Wurz, Peter

Subjects:

500 Science > 520 Astronomy
600 Technology > 620 Engineering

ISBN:

978-3-96144-060-3

Series:

DVS Berichte

Publisher:

DVS Media

Language:

English

Submitter:

Dora Ursula Zimmerer

Date Deposited:

14 Jun 2021 12:21

Last Modified:

14 Jun 2021 12:30

BORIS DOI:

10.7892/boris.153270

URI:

https://boris.unibe.ch/id/eprint/153270

Actions (login required)

Edit item Edit item
Provide Feedback