Werkstoffe-ContentAlumina Systems GmbH can supply Aluminiumoxid of different qualities from 92% to 99,99% Al2O3. The suitable Aluminiumoxid quality is choosen upon customer demands and application requirements. Ceramic-to-metal composites with Aluminiumoxid and different metal alloys (e.g. Ni-Fe, Ni based alloys stainless steel, copper, titanium) are created by brazing technology. Mainly Copper-silver-brazes are used to achieve vacuum tight solder joints. For special applications active brazes or gold-nickel-brazes are used. Für Joining technology of ceramic special glass brazes have been developed. The working temperature can be >1.000°C.