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US 12,683,312 B2Granted
Electric contact having a multilayered coating structure
AssigneeTE Connectivity Germany GmbH
InventorsHelge Schmidt, Isabell Buresch, Erika Crandall, Claus Clemens Borhauer
Life of this patent
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Abstract
An electric contact includes a multilayered coating structure. The multilayered coating structure includes an intermediate layer and a top layer arranged on top of the intermediate layer. The intermediate layer includes Bi3Ni and the top layer includes a plurality of free bismuth grains.
Claims18
An electric contact, comprising:
- a multilayered coating structure including an intermediate layer and a top layer arranged on top of the intermediate layer, the intermediate layer consists of Bi3Ni and the top layer includes a plurality of free bismuth grains, a shear resistance of the top layer is increased by an adhesion of the top layer to the intermediate layer.
A method of manufacturing an electric contact having a multilayered coating structure, comprising:
- applying a first layer of nickel to the electric contact;
- and
- applying a second layer of bismuth on top of the first layer of nickel, a thickness ratio of the first layer to the second layer is at most 1:9, when the second layer is applied on the first layer, an intermediate layer consisting of Bi3Ni is formed from the first layer and a portion of the second layer, and a top layer including a plurality of free bismuth grains is arranged on top of the intermediate layer, a shear resistance of the top layer is increased by an adhesion of the top layer to the intermediate layer.
Dependencies are inferred from the claim text.