Contact Materials for High Voltage Direct Current Systems
AssigneeAirbus Defence and Space GmbH
InventorsJuergen STEINWANDEL, Dietrich JONKE, Helmut PIRINGER
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Abstract
A contact element for high voltage direct current switches includes a matrix made of a first material selected from the group comprising copper, silver, palladium, platinum, tungsten, molybdenum, rhenium, nickel, gold, and alloys thereof. The contact element also includes a foreign phase, which is dispersed in the matrix and is made of a second material selected from the group comprising carbon, tin(II) oxide, tin(IV) oxide, zinc(II) oxide, tungsten, nickel and mixtures thereof. The contact element has a porosity of ≦1.0% by volume, based on a total volume of the contact element.
Claims19
A contact element for high voltage direct current switches, the contact element comprising:
- a) a matrix made of a first material selected from the group comprising copper, silver, palladium, platinum, tungsten, molybdenum, rhenium, nickel, gold, and alloys thereof;
- and
- b) a foreign phase, which is dispersed in the matrix and is made of a second material selected from the group comprising carbon, tin(II) oxide, tin(IV) oxide, zinc(II) oxide, tungsten, nickel and mixtures thereof,
- wherein the contact element has a porosity of ≦1.0% by volume, based on a total volume of the contact element.
A method for producing a contact element for high voltage direct current switch, the method comprising:
- a) providing a first material selected from the group comprising copper, silver, palladium, platinum, tungsten, molybdenum, rhenium, nickel, gold and alloys thereof;
- b) providing a second material selected from the group comprising carbon, tin(II) oxide, tin(IV) oxide, zinc(II) oxide, tungsten, nickel and mixtures thereof,
- c) bringing the first material from step a) into contact with the second material from step b) to produce a master alloy comprising the first material and the second material;
- and
- d) thermally spraying the master alloy obtained in step c) to produce the contact element comprising a matrix, made of the first material, and a foreign phase, which is dispersed in the matrix and is made of the second material.
Dependencies are inferred from the claim text.