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Anticorrosive terminal material, anticorrosive terminal, and electric wire end structure

An anti-corrosion and terminal technology, which is applied in the direction of circuits, contact parts, electrical components, etc., can solve the problems of poor productivity of Sn-Zn alloy plating and disappearance of anti-corrosion effect of aluminum wires, etc., and achieve excellent long-term corrosion resistance and suppression of foreign species Metal contact corrosion and the effect of suppressing the increase of contact resistance

Pending Publication Date: 2020-06-19
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As described in Patent Document 3, laminating a Sn-Zn alloy on a Sn-Cu-based alloy layer and having a Zn high-concentration layer on the outermost layer has the following problems: the productivity of Sn-Zn alloy plating deteriorates, and the Sn-Cu When the copper (Cu) of the alloy layer is exposed on the surface, the anti-corrosion effect on the aluminum wire disappears

Method used

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  • Anticorrosive terminal material, anticorrosive terminal, and electric wire end structure
  • Anticorrosive terminal material, anticorrosive terminal, and electric wire end structure
  • Anticorrosive terminal material, anticorrosive terminal, and electric wire end structure

Examples

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Embodiment

[0088] A copper plate of C1020 is used as the base material, and the copper plate is stamped into figure 2 The strip material shown, and after degreasing, pickling, and nickel plating in the case of forming the bottom layer, after that, removing figure 2 Except for the predetermined contact part 25, zinc alloy plating is implemented. Then, tin plating was performed on the entire surface. Then, this plated copper plate was heat-treated at a temperature of 30° C. to 190° C. within a range of 1 hour to 36 hours to obtain samples 1 to 16 of anticorrosion terminal materials shown in Table 1.

[0089] As a comparative example, the following samples were also produced: Sample 18 in which a zinc layer was formed in a short time and at a low current density when galvanizing was performed on the part where the core wire is to be contacted; Sample 19 was galvanized on the entire surface, and the zinc layer was also formed on the planned contact part; and the part other than the plann...

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Abstract

The anticorrosive terminal material has a base material made of copper or a copper alloy and a coating film laminated on the base material. The coating film has: a first coating film which is formed by laminating a zinc layer comprising a zinc alloy and a tin layer comprising tin or a tin alloy in that order, and which is disposed at an expected core contact part wherewith the core of an electricwire comes into contact when the terminal material is formed into a terminal; and a second coating film which has the tin layer without the zinc layer and which is disposed at an expected contact partwhich will become a contact when the terminal material is formed into the terminal. The zinc layer has a thickness of 0.1 [mu]m to 5.0 [mu]m and a zinc concentration of 30 mass% to 95 mass%, with thebalance including at least one kind out of the set consisting of nickel, iron, manganese, molybdenum, cobalt, cadmium, lead, and tin.

Description

technical field [0001] The present invention relates to a corrosion-resistant terminal material that is used as a terminal that is crimped to the end of an electric wire composed of an aluminum wire material and has a high corrosion-resistant effect, a corrosion-resistant terminal composed of the corrosion-resistant terminal material, and the use of the corrosion-resistant terminal The wire end structure. [0002] This application claims priority based on Patent Application No. 2017-208844 filed in Japan on October 30, 2017, and uses the content thereof here. Background technique [0003] Conventionally, the electric wire is connected to the device by crimping a terminal made of copper or copper alloy to the terminal portion of the wire made of copper or copper alloy and connecting the terminal to a terminal provided on the device. In order to reduce the weight of electric wires, etc., instead of copper or copper alloys, aluminum or aluminum alloys may be used to form the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D7/00C25D5/02C25D5/10C25D5/12C25D5/50H01R4/62H01R13/03
CPCH01R4/62H01R13/03C25D5/12C25D7/00C25D5/617H01R4/185C25D5/10C25D5/505C25D5/022C25D3/12C25D3/22C25D3/565C25D3/562C25D3/60C25D3/30C25D5/02B32B15/01B32B2311/20H01R4/18H01R12/69
Inventor 久保田贤治樽谷圭荣玉川隆士中矢清隆
Owner MITSUBISHI MATERIALS CORP
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