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

Titelangaben

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. Bd. 38 (2018) Heft 4 . - S. 1802-1811.
ISSN 0955-2219
DOI: https://doi.org/10.1016/j.jeurceramsoc.2017.11.026

Abstract

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.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Oxide/oxide composites; Joining; Alumina fibres; YAG-ZrO2; Glass-ceramics
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige Professoren > Lehrstuhl Keramische Werkstoffe - Univ.-Prof. Dr.-Ing. Walter Krenkel
Profilfelder > Advanced Fields > Neue Materialien
Forschungseinrichtungen > Forschungszentren > Bayreuther Materialzentrum - BayMAT
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Keramische Werkstoffe
Profilfelder
Profilfelder > Advanced Fields
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige Professoren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 12 Nov 2019 07:21
Letzte Änderung: 26 Jul 2022 10:20
URI: https://eref.uni-bayreuth.de/id/eprint/53174