Abstract
New method to joint silicon carbide-based material was developed. It was based on mixture composed mainly by molybdenum silicides. This mixture was tested as brazing mixture with several types of silicon carbide-based material. Microstructural examination of the joint showed that brazing mixture reacted with substrate to form silicon carbide on the surface, while two different molybdenum silicides were identified inside the joint (MoSi{sub 2} and Mo{sub 4.8}Si{sub 3}C{sub 0.6}). Preliminary oxidation tests performed by means of TGA showed high oxidation resistance of this joint over 1000 C making it very promising for high temperature application like ceramic heat exchanger. (orig.)
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