Book/Report

FZJ-2019-00619

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Fügen von SiC-Keramiken mittels Borcarbid, Silicium und Kohlenstoff für Hochtemperaturanwendungen

Tzartzas, I. (Corresponding author)FZJ* ; Gyarmati, E.FZJ* ; Naoumidis, A.FZJ* ; Nickel, H.FZJ*

1995
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/21353

Report No.: Juel-3079

Abstract: The present work is a contribution to joining of SiC-Ceramics for high temperature applications. The aim was to develop a joining technique for Silicon Carbide ceramics by means of boron, carbon and silicon. The joint is created by the formation of a welding zone, which consists of SiC as it is the material to be joined. For this purpose are used the follow means: a) sputtering layers of B$_{4}$C, Si and C, b) vacuum coatings of Si or Si foils and C, c) powder mixtures of B$_{4}$C, Si and C. The joints were examined at ceramographic cross sections of the bonding zone, by means of XRD, REM/EDAX, TEM and EPMA. The bond strength was determined in the 4-point bend test at room temperature and at 1370° C. It was found that a useable result can be obtained, if the temperature of the joining process exceeds the melting point of Si (1410° C). A high bending strength with a high Weibull modulus was achieved by using sputter layers. The powder mixtures provided a satisfactory bending strength with a low Weibull modulus.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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