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Joining and testing of alumina fibre reinforced YAG-ZrO₂ matrix composites

Title data

Akram, Muhammad Yasir ; Ferraris, Monica ; Casalegno, Valentina ; Salvo, Milena ; Puchas, Georg ; Knohl, Stefan ; Krenkel, Walter:
Joining and testing of alumina fibre reinforced YAG-ZrO₂ matrix composites.
In: Journal of the European Ceramic Society. Vol. 38 (April 2018) Issue 4 . - pp. 1802-1811.
ISSN 0955-2219
DOI: https://doi.org/10.1016/j.jeurceramsoc.2017.11.026

Abstract in another language

Alumina (Nextel™ 610) fibre reinforced YAG-ZrO₂ matrix composites were successfully joined by using different brazing alloys, metallic interlayers and a glass-ceramic. All joints were mechanically stable and free of cracks. Three commercial brazing alloys and a new alloy based on Ti/Cu/Al interlayers were selected to join these composites for applications in a non-oxidizing environment. A glass-ceramic based on SiO₂-Al₂O₃-CaO-MgO was developed in case the joined component needs to be oxidation resistant. To evaluate the thermal stability, all joined composites were aged up to 100 h in air at 550 °C for brazing joints or 850 °C and 930 °C for glass-ceramic joints. The mechanical strength was measured using single lap and four point bending tests before and after ageing. Four point bending tests on glass-ceramic joined samples showed an average joint strength of about 70 MPa which is 35% of as-received composites.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Oxide/oxide composites; Joining; Alumina fibres; YAG-ZrO2; Glass-ceramics
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Ceramic Materials Engineering > Chair Ceramic Materials Engineering - Univ.-Prof. Dr.-Ing. Walter Krenkel
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 12 Nov 2019 07:21
Last Modified: 12 Nov 2019 07:21
URI: https://eref.uni-bayreuth.de/id/eprint/53174