Material for electric contact and method of producing the same
AssigneeFurukawa Electric Co., Ltd.
InventorYoshiaki Kobayashi
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Abstract
A material for electric sliding contact comprising, on a conductive substrate, a first layer composed of a noble metal or an alloy comprising the noble metal as a major component with an arithmetic average roughness Ra of (A) μm and, as an upper layer of the first layer, a second layer composed of a noble metal or an alloy comprising the noble metal as a major component with a covering thickness of from 0.001×(A) μm or more to (A) μm or less, wherein the noble metal forming the second layer or the noble metal as a major component of the alloy forming the second layer is a different element from the noble metal forming the first layer or the noble metal as a major component of the alloy forming the first layer.
Claims6
A material for electric sliding contact, comprising, on a conductive substrate, a first layer composed of a noble metal or an alloy comprising the noble metal as a major component, with an arithmetic average roughness Ra of (A) μm, and, as an upper layer of the first layer, a second layer composed of a noble metal or an alloy comprising the noble metal as a major component, with a covering thickness of from 0.001×(A) μm or more to (A) μm or less, and
- wherein the noble metal forming the second layer or the noble metal as a major component of the alloy forming the second layer is a different element from the noble metal forming the first layer or the noble metal as a major component of the alloy forming the first layer;
- wherein the average roughness Ra is in the range of from 0.05 to 0.5 μm.
Dependencies are inferred from the claim text.