The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 20, 2025

Filed:

May. 04, 2022
Applicant:

Heraeus Materials Singapore Pte. Ltd., Singapore, SG;

Inventors:

Miew Wan Lo, Singapore, SG;

Murali Sarangapani, Singapore, SG;

Yong Sheng Wang, Singapore, SG;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 5/12 (2006.01); B21C 1/02 (2006.01); C25D 5/50 (2006.01); C25D 7/06 (2006.01);
U.S. Cl.
CPC ...
C25D 5/12 (2013.01); B21C 1/02 (2013.01); C25D 5/50 (2013.01); C25D 7/0607 (2013.01);
Abstract

A round wire comprising a wire core with a surface, the wire core having a coating layer superimposed on its surface, wherein the wire core itself is a silver-based wire core, wherein the coating layer is a double-layer comprised of a 1 to 100 nm thick inner layer of palladium or nickel and an adjacent 1 to 250 nm thick outer layer of gold, wherein the outer layer of gold exhibits at least one of the following intrinsic properties Al) and A2): A1) the average grain size of the crystal grains in the outer layer of gold, measured in longitudinal direction, is in the range of from-0.1 to 0.8 μm; A2) 60 to 100% of the crystal grains in the outer layer of gold are oriented in <100>direction, and 0 to 20% of the crystal grains in the outer layer of gold are oriented in <111>direction.


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