Silicon carbide fiber reinforced silicon carbide (SiC/SiC) composites have unique properties that make them suitable for demanding applications. These materials have to be joined with other materials or with the same type of material to produce the final component. This work investigates the effectiveness of a fluorine-based plasma process on SiC/SiC composites as a surface engineering technique to manufacture a brush-like texturized surface. The studied pre-treatment induced an interlocking effect at the composite/joining material interface, thus improving the joint strength of the joined components. Several plasma conditions were considered and the most promising one (CF4, 20 sscm, 200 W, 30 min) was selected to assess the effect on the mechanical performance of SiC/SiC brazed with a commercial brazing alloy (Cusil-ABA®). The selected plasma pre-treatment led to a 55% increase in the apparent shear strength of the joined SiC/SiC composites.
Plasma etching as a surface engineering technique for SiC/SiC composites to improve joint strength
De Zanet A.; Pedroni M.; Salvo M.; Vassallo E.; Casalegno V.
Journal:
Ceramics international 49 pp. 10608 - 10614
Year:
2022
ISTP Authors: Espedito Vassallo
Matteo Pedroni
Keywords: Composites, surfaces, Joining, SiC
Research Activitie: JOURNAL ARTICLES
Related products
-
Nuclear fusion 61 (2), pp. 023001-1 - 023001-75 Year: 2021 DOI: 10.1088/1741-4326/abc06c
The reversed field pinch
Marrelli L.; Martin P.; Puiatti M.E.; Sarff J.S.; Chapman B.E.; Drake J.R.; Escande D.F.; Masamune S.
-
Review of scientific instruments 92 (4), pp. 043556-1 - 043556-6 Year: 2021 DOI: 10.1063/5.0043669
Design of JT-60SA core Thomson scattering diagnostic system
Tojo H.; Pasqualotto R.; Fassina A.; Giudicotti L.; Sasao H.; Homma H.; Oyama N.
-
Analytical letters 54 (12), pp. 2009 - 2021 Year: 2021 DOI: 10.1080/00032719.2020.1833021
Dry Ashing for Signal Enhancement in Laser-Induced Breakdown Spectroscopy (LIBS)
Lazaro, Maisa Cristina; de Morais, Carla Pereira; Silva, Tiago Varao; Senesi, Giorgio Saverio; Santos Junior, Dario; Gomes Neto, Jose Anchieta; Ferreira, Edilene Cristina
English
Italiano