Method for producing a contact material on the basis of silver-tin oxide or silver-zinc oxide, and contact material
AssigneeDoduco Contacts and Refining GmbH
InventorsThomas Honig, Volker Behrens, Havva Cinaroglu
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Abstract
A method for producing a contact material on the basis of silver-tin oxide or silver-zinc oxide is disclosed. Tin oxide particles and/or zinc oxide particles are mixed with a powder of a metal different from silver. The mixture is heated beyond the melting point of the metal powder such that the tin oxide particles and/or zinc oxide particles are wetted with liquid metal. The mixture is exposed to an atmosphere containing oxygen and the metal is thereby oxidized. Thereafter, the mixture product formed by the oxidation step is embedded as a powder into a silver matrix. The product further relates to a corresponding contact material.
Claims11
A method for the production of a contact material based on silver tin oxide or silver zinc oxide, the method comprising the steps of:
- forming a mixture by mixing particles of tin oxide and/or zinc oxide with a powder of a metal that differs from silver;
- heating this mixture beyond the melting point of the metal powder, wherein the tin oxide and/or zinc oxide particles are wetted with liquid metal;
- exposing the mixture to an oxygen-containing atmosphere thereby oxidizing the metal;
- and
- embedding the mixture formed by the oxidation step as a powder in a silver matrix.
A method for the production of a contact material based on silver tin oxide or silver zinc oxide, the method comprising the steps of:
- forming a first mixture by mixing particles of tin oxide and/or zinc oxide with a powder of a metal that differs from silver;
- heating this first mixture beyond the melting point of the metal powder, wherein the tin oxide and/or zinc oxide particles are wetted with liquid metal;
- exposing the first mixture to an oxygen-containing atmosphere thereby oxidizing the metal to form a metal oxide;
- pulverizing the first mixture into a first mixture powder;
- forming a second mixture by mixing the first mixture powder with a silver powder;
- and
- heating the second mixture thereby embedding the first mixture in a silver matrix.
Dependencies are inferred from the claim text.