Endress+hauser Gmbh+co.

Other

J&uuml;rgen Breme

Frank Hegner

Elke Maria Schmidt

Volker G&uuml;ther

J&uuml;rgen Peter Turnsek

Heinz M&uuml;ller

Andreas Rossberg

Ulfert Drewes

Thomas Velten

Andreas Otto

Anobecs Allo

The active brazing solder for brazing ceramic parts of alumina, particularly of high-purity alumina, contains a maximum of 12 wt. % Ti, a maximum of 8 wt. % Be, and less than 16.5 wt. % Fe, the remainder being Zr and any impurities that may be present. The active brazing solder has the following behaviour/features: Brazing temperature: lower than 1,000&deg; C.; the brazed joint is high-vacuum-tight over a long period of time; the coefficient of thermal expansion of the active brazing alloy is substantially identical to that of the alumina ceramic in the entire temperature range covered during the brazing process; the strength of the brazed joint between the two ceramic parts is so high that under tensile loading, fracture will result not at the joint, but in the adjacent ceramic; the pressure resistance of the active brazing solder is greater than 2 GPa; the active brazing solder is very good processable into powders having particle sizes on the order of 10 &mgr;m.

Active brazing solder for brazing alumina-ceramic parts

A diaphragm and basic body of a pressure sensor are interconnected via a joint F. A groove is provided in the basic body in order to reduce the stress concentration in the region of the joint F.

Capacitive pressure sensor

Growing community of inventors

Heusweiler, Germany

Jürgen Breme

Growing community of inventors

Heusweiler, Germany

J&uuml;rgen Breme

Jürgen Breme