METHOD OF PRODUCING SILICON CARBIDE-BASED BODIES BY JOINING PRE-FABRICATED PARTS

Component bodies of silicon carbide base material, at least in their surface layers, are welded together without the provision of a binder at finely polished joining surfaces by virtue of the fact that at least one of the joint surfaces is of a silicon carbide material containing an excess of silico...

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Main Authors GUPTA, ASHOK KUMAR, MUNZER, RUDOLF, GYARMATI, ERNO, KREUTZ, HERMANN, NAOUMIDIS, ARISTIDES
Format Patent
LanguageEnglish
German
Published 30.12.1986
Edition4
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:Component bodies of silicon carbide base material, at least in their surface layers, are welded together without the provision of a binder at finely polished joining surfaces by virtue of the fact that at least one of the joint surfaces is of a silicon carbide material containing an excess of silicon (SiSiC). The component bodies are kept closely fitted together especially by an additional pressing force of at least 0.1 kg/cm2 during a heating stage at atmospheric or lower pressure at a temperature in the range from 1500 DEG C. to 1800 DEG C. for 15 to 100 minutes in an inert atmosphere, the excess of silicon at the boundary making it possible for silicon carbide crystal growth to take place across the boundary.
Bibliography:Application Number: EP19820109035