CONTACT MATERIAL MAINLY COMPOSED OF AG ALLOY, CONTACT USING THE CONTACT MATERIAL, AND ELECTRICAL DEVICE
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United States of America Patent
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Issued Date -
Jul 14, 2022
app pub date -
May 29, 2020
filing date -
May 31, 2019
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Abstract
A contact material mainly composed of an Ag alloy, includes: an Ag alloy; and at least one main additive existing as a phase different from the Ag alloy and selected from the group consisting of tin oxide, nickel, nickel oxide, iron, iron oxide, tungsten, tungsten carbide, tungsten oxide, zinc oxide, and carbon, wherein when a metal atom constituting the main additive or the main additive is carbon, the Ag alloy contains a solid solution element having a vacancy binding energy lower than a vacancy binding energy that is a binding energy between the metal atom included in the main additive and a vacancy in an Ag metal, or a binding energy between carbon included in the main additive of carbon and a vacancy in an Ag metal, in an amount of 0.01 wt. % or more.
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