Metal Ceramic Brazed Assemblies

Meeting the requirements for high-vacuum tight (high pressure tight) components

This technology includes metallization the ceramic base body at the joints by means of a Mo/Mn paste. The latter is mechanically applied and cured under high temperature. Diffusion will produce a cohesive compound of ceramics and plating. Such metallization can be brazed with metal components. Hard solder is used to this effect, as a rule. Active brazing is available as another connection technology in which both the brazing and the metallization process are effected in a single process step. 

This will create connections with a high bonding strength also meeting the requirements for high-vacuum tight (high pressure tight) components and used, for instance, in power electronics. 

QSIL has more than 50 years of experience in producing ceramic-metal brazed connections. The experience QSIL has gathered in processes, together with state-of-the-art equipment, allow for the realization of sophisticated, customer-specific  assemblies. Our service portfolio ranges from the structural design through prototype production up to serial supply. This process including the preparation of ceramic materials is performed at the Auma site. 

Ceramic-metal brazed connections are used as high-performance insulators in different types of (electrical, thermal or fluid) feedthroughs. The high bonding strength of the compound, combined with high-vacuum tightness, temperature resistance and electrical insulation properties qualify these components for a multitude of application: 

• Insulators for high-performance tubes (X-ray tubes, transmission tubes) 

• Insulators for analytical instrumentation / physical research (cyclotrones, catalyst sections, mass spectrometer) 

• Laser applications 

• Sensor applications 

• Cases for electronic components and switches