Method for producing by laser gastight and high-temperature resistant connections of shaped parts made of a non-oxidic ceramic

• Main Authors: KNORR JUERGEN, EXNER HORST, LIPPMANN WOLFGANG, WOLF REGINE, REINECKE ANNE-MARIA
• Format: Patent
• Language: English
• Published: 09.12.2008
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; LIME, MAGNESIA; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; MINERAL OR SLAG WOOL; PERFORMING OPERATIONS; REFRACTORIES; SLAG; SOLDERING OR UNSOLDERING; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TRANSPORTING; TREATMENT OF NATURAL STONE; WELDING; WORKING BY LASER BEAM

Method for producing by laser gastight and high-temperature resistant connections of shaped parts made of non-oxidic ceramic. The invention relates to the fields of ceramics and laser technology and relates to a method with which, e.g., low-melting-point or radioactive materials can be enclosed inside a container made of ceramic. The object of the invention is to produce a durable, gastight and high-temperature resistant connection between components made of non-oxidic ceramic. Shaped parts made of the ceramic are provided on the surfaces to be joined with a solder of 80-30% by weight yttrium oxide and/or 55-15% by weight zirconium oxide, 20-70% by weight aluminum oxide, 0-50% by weight silicon dioxide and 0-10% by weight silicon, and subsequently the temperature at the joint area is increased above the melting temperature of the solder by means of a laser without the presence of a protective gas atmosphere or a vacuum.