Alloy material, contact probe, and connection terminal

Patent metadata

Field	Value
Publication number	US-2018105902-A1
Application number	US-201615562580-A
Country	US
Kind code	A1
Filing date	Mar 31, 2016
Priority date	Mar 31, 2015
Publication date	Apr 19, 2018
Grant date	—

Abstract

An alloy material includes: a composition, in a composition range of a ternary alloy of silver (Ag), palladium (Pd), and copper (Cu), the composition containing 20 to 30 wt % of Ag, 35 to 55 wt % of Pd, and 20 to 40 wt % of Cu. The composition as a base is added with tin (Sn) in a range of 0.5 to 2.5 wt %, further added with any one of or a combination of cobalt (Co), chromium (Cr), and zinc (Zn) in a range of 0.1 to 1.0 wt %, and added with 0.01 to 0.1 wt % of either one of or a combination of iridium (Ir) and ruthenium (Ru).

First claim

1 . An alloy material comprising:
a composition, in a composition range of a ternary alloy of silver (Ag), palladium (Pd), and copper (Cu), the composition containing 20 to 30 wt % of Ag, 35 to 55 wt % of Pd, and 20 to 40 wt % of Cu, wherein the composition as a base is
added with tin (Sn) in a range of 0.5 to 2.5 wt %,
further added with any one of or a combination of cobalt (Co), chromium (Cr), and zinc (Zn) in a range of 0.1 to 1.0 wt %, and
added with 0.01 to 0.1 wt % of either one of or a combination of iridium (Ir) and ruthenium (Ru).

2 . The alloy material according to claim 1 , wherein 0.003 to 0.03 wt % of phosphorous (P) is further added.

3 . The alloy material according to claim 1 , wherein Vickers hardness subjected to aging treatment by heating is 480 to 560.

4 . A conductive contact probe, wherein
both ends of the conductive contact probe in a longitudinal direction are configured to contact with respective contact objects, and at least a part of the conductive contact probe is formed of the alloy material according to claim 1 .

5 . The contact probe according to claim 4 , comprising:
a conductive first plunger, one end of the conductive first plunger being configured to contact with one of the contact objects; a conductive second plunger, one end of the conductive second plunger being configured to contact with another one of the contact objects; and a coil spring provided in between the first plunger and the second plunger to couple the first plunger and the second plunger in an expandable and contractible manner, wherein at least one of the first plunger, the second plunger and the coil spring is formed of the alloy material.

6 . A conductive connection terminal, wherein
both ends of the conductive connection terminal in a longitudinal direction are configured to contact with respective contact objects, and at least a part of the conductive connection terminal is formed of the alloy material according to claim 1 .

7 . The alloy material according to claim 2 , wherein Vickers hardness subjected to aging treatment by heating is 480 to 560.

8 . The conductive contact probe according to claim 4 , wherein the composition is further added with 0.003 to 0.03 wt % of phosphorous (P).

9 . The conductive contact probe according to claim 4 , wherein Vickers hardness subjected to aging treatment by heating is 480 to 560.

10 . The conductive contact probe according to claim 8 , wherein Vickers hardness subjected to aging treatment by heating is 480 to 560.

11 . The conductive contact probe according to claim 5 , wherein the composition is further added with 0.003 to 0.03 wt % of phosphorous (P).

12 . The conductive contact probe according to claim 5 , wherein Vickers hardness subjected to aging treatment by heating is 480 to 560.

13 . The conductive contact probe according to claim 11 , wherein Vickers hardness subjected to aging treatment by heating is 480 to 560.

14 . The conductive contact probe according to claim 6 , wherein the composition is further added with 0.003 to 0.03 wt % of phosphorous (P).

15 . The conductive contact probe according to claim 6 , wherein Vickers hardness subjected to aging treatment by heating is 480 to 560.

16 . The conductive contact probe according to claim 14 , wherein Vickers hardness subjected to aging treatment by heating is 480 to 560.

Assignees

• Nhk Spring Co Ltd
• Yamakin Co Ltd
• Shinko Metal Prod

Inventors

• Kazama Toshio
• Tani Yoshihisa
• Shoji Satoshi
• Anraku Teruo
• Ainoya Masayuki
• Kubota Tomohiro
• Toyotake Kotaro
• Abe Hitoshi

Classifications

• H01R13/03

  characterised by the material, e.g. plating, or coating materials · CPC title

• C22F1/14

  of noble metals or alloys based thereon · CPC title

• C22C5/04

  Alloys based on a platinum group metal · CPC title

• G01R1/06755

  Material aspects · CPC title

• C22F1/00

  Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working (apparatus for mechanical working of metal B21, B23, B24) · CPC title