Kistler Holding Ag

Swiss Steel Ag

Giovanni Mastrogiacomo

Claudio Cavalloni

Reinhard Staub

Paul Furter

Rolf Thiel

Sandro Brandenberger

Thomas Cadonau

Francisca Garcia Caballero

Hans Beat Maerki

Hans Beat Märki

Hans Roelofs

Ulrich Hugo Urlau

A joint joins an alloy member to a ceramic member via a glass joining agent, which is joined to the alloy member by a material bonded joint and to the ceramic member by a further material bonded joint. The glass joining agent is made of a glass having a melting point below 800&#xb0; C.; a coefficient of thermal expansion of at least 9-10Kand a bismuth content of at least 10%. The alloy member has a coefficient of thermal expansion of at least 9-10K. The ceramic member has a maximum coefficient of thermal expansion of 8-10K. The material bonded joint defines a mixing region that is a partial region of the ceramic member, and the bismuth content in the mixing region is higher than that of the ceramic member outside the mixing region.

Joint, electrical feedthrough, and sensor

A contact force testing apparatus includes a measuring sensor that can be contacted with an electrical contact element and measures a contact force (F) of a contact with the electrical contact element. The measuring sensor includes piezoelectric material that receives the contact force (F) in a contact region and produces polarization charges. The measuring sensor includes an acceptor electrode that is completely surrounded by piezoelectric material in the contact region in the direction of a thickness extension of the measuring sensor and receives the polarization charges. A method is provided for the use of such a contact force testing apparatus, and a method is provided for producing such a contact force testing apparatus.

Contact force testing apparatus, use of such a contact force testing apparatus and method for producing such a contact force testing apparatus

A contact force testing apparatus includes a measuring sensor that can be contacted with an electrical contact element and measures a contact force (F) of a contact with the electrical contact element of an electrical connector having a male component and a female component. The measuring sensor receives the contact force in a contact region with a piezoelectric pick-up. The measuring sensor includes a plurality of piezoelectric pick-ups that are spaced apart from one another by pick-up gaps. The measuring sensor has a protective sleeve that covers the piezoelectric pick-ups and the pick-up gaps in the contact region.

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Zurich, Switzerland

Giovanni Mastrogiacomo