CN113381215A - Conductive terminal - Google Patents
Conductive terminal Download PDFInfo
- Publication number
- CN113381215A CN113381215A CN202110570660.3A CN202110570660A CN113381215A CN 113381215 A CN113381215 A CN 113381215A CN 202110570660 A CN202110570660 A CN 202110570660A CN 113381215 A CN113381215 A CN 113381215A
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- CN
- China
- Prior art keywords
- layer
- rhodium alloy
- plating layer
- conductive terminal
- corrosion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a conductive terminal, which is made of a copper metal plate, and comprises a contact area for butting with a butting connector, wherein a metal plating layer is formed on the surface of the copper metal plate in an electroplating way in the contact area; the metal plating layer includes at least a first rhodium alloy plating layer, a second rhodium alloy plating layer, and a plurality of corrosion-resistant layers. At least two layers of rhodium alloy plating layers are electroplated on the surface of the conductive terminal, so that the resistance to electrolytic corrosion and chemical corrosion of the conductive terminal can be improved, the performance of the conductive terminal is improved, and the service life of the conductive terminal is prolonged.
Description
The application is a divisional application with the application number of 201911043099.2, the application date of 2019, 10 and 30 and the invention name of 'conductive terminal'.
[ technical field ] A method for producing a semiconductor device
The present invention relates to a conductive terminal, and more particularly, to a conductive terminal with improved resistance to electrolytic corrosion.
[ background of the invention ]
Chinese utility model patent No. CN207918992U discloses a wear-resistant and corrosion-resistant plating layer, terminal, electronic interface, the wear-resistant and corrosion-resistant plating layer includes: the base material copper metal, the corrosion-resistant layer nickel alloy, the transition connection layer gold plating layer and the wear-resistant layer rhodium-ruthenium alloy layer. When the terminal with the electroplated layer is electrified, the anti-electrolytic corrosion performance is poor, the terminal is easy to be corroded by electrolysis, and the service life of the terminal is short.
Therefore, there is a need to provide an improved conductive terminal to overcome the above-mentioned drawbacks.
[ summary of the invention ]
The invention aims to provide a conductive terminal with stronger electrolytic corrosion resistance.
The purpose of the invention is realized by the following technical scheme: a conductive terminal is made of a copper metal plate and comprises a contact area for butting with a butting connector, and a metal plating layer is formed on the surface of the contact area in an electroplating mode; the metal plating layer comprises at least two rhodium alloy plating layers, a corrosion-resistant layer and gold plating layers arranged at intervals, wherein two rhodium alloy plating layers are arranged in close proximity to each other in the at least two rhodium alloy plating layers.
Further, in the two rhodium alloy plating layers arranged next to each other, the thickness of the rhodium alloy plating layer on the inner side is smaller than that of the rhodium alloy plating layer on the outer side.
Further, the corrosion-resistant layer includes at least two layers, and the two rhodium alloy plating layers disposed in close proximity to each other are located between the corrosion-resistant layers.
Further, in the at least two rhodium alloy plating layers, two rhodium alloy plating layers are spaced apart by the corrosion-resistant layer.
Furthermore, one rhodium alloy coating belongs to one of two adjacent rhodium alloy coatings and one of rhodium alloy coatings arranged at intervals.
Furthermore, one rhodium alloy coating is positioned on the secondary outer layer of the metal coating, and the gold coating is plated on the outer side of the rhodium alloy coating.
Further, the corrosion-resistant layer comprises a nickel-plated layer and a first corrosion-resistant layer, wherein the nickel-plated layer and the first corrosion-resistant layer are arranged close to the surface of the metal copper plate, the first corrosion-resistant layer is a palladium-plated layer or a palladium-plated alloy layer or a silver-plated layer or a platinum-plated layer, and the two rhodium alloy plating layers and the corrosion-resistant layer which are arranged close to each other are connected through the gold-plated layer.
Furthermore, one rhodium alloy coating is positioned on the secondary outer layer of the metal coating, and the gold coating is plated on the outer side of the rhodium alloy coating.
Furthermore, the surface of the metal copper plate is sequentially provided with a nickel plating layer, a gold plating layer, a first rhodium alloy plating layer, a second rhodium alloy plating layer, a gold plating layer, a first corrosion-resistant layer, a gold plating layer, a third rhodium alloy plating layer and a gold plating layer.
Furthermore, the conductive terminal is used for a USB electric connector.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, at least two rhodium alloy plating layers, namely the first rhodium alloy plating layer and the second rhodium alloy plating layer, are electroplated on the surface of the conductive terminal, and the two rhodium alloy plating layers are arranged in close proximity to each other in the rhodium alloy plating layers, so that the electrolytic corrosion resistance and the chemical corrosion resistance of the conductive terminal can be improved, and the performance of the conductive terminal is improved.
[ description of the drawings ]
Fig. 1 is a schematic view of a metal plating structure of a conductive terminal according to a first embodiment of the present invention.
Fig. 2 is a schematic view of a metal plating structure of a conductive terminal according to a second embodiment of the present invention.
Fig. 3 is a schematic view of a metal plating structure of a conductive terminal according to a third embodiment of the present invention.
[ description of main reference symbols ]
First rhodium alloy plating 14, 25, 34 first corrosion- resistant layer 15, 24, 36
Second rhodium alloy plating 16, 26, 35 third rhodium alloy plating 37
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
[ detailed description ] embodiments
Referring to fig. 1, a conductive terminal (not labeled) according to a first embodiment of the present invention is made of a copper metal plate 11, and the conductive terminal includes a contact area for mating with a mating connector (not shown). The contact area is electroplated with a metal plating layer 1 on the surface of the copper metal plate 11, and the metal plating layer 1 is electroplated with: a nickel plating layer 12, a gold plating layer 13, a first rhodium alloy plating layer 14, a gold plating layer 13, a first corrosion-resistant layer 15, a gold plating layer 13, a second rhodium alloy plating layer 16, and a gold plating layer 13. The thickness of the first rhodium alloy plating 14 is equal to the thickness of the second rhodium alloy plating 16. The first corrosion-resistant layer 15 is a palladium plating layer or a palladium alloy plating layer or a gold plating layer or a silver plating layer or a platinum plating layer, wherein the nickel plating layer and the first corrosion-resistant layer are corrosion-resistant layers. The nickel plating layer 12 is used to fill up the uneven surface of the copper metal plate 11 and has corrosion resistance. The first corrosion-resistant layer 15 provides further chemical corrosion-resistant protection to the conductive terminal.
One deck gold plating layer 13 electroplates between the plating layer of difference is because there is certain internal stress between the plating layer of difference, and the internal stress has influenced the adhesion between the different plating layers, because the gold utensil has better ductility, can cushion or reduce the internal stress between the plating layer, prevents that the plating layer from appearing the crack. The gold plating layer 13 is further electroplated on the second rhodium alloy plating layer 16, so that the conductive terminal can be more attractive in appearance.
The rhodium alloy coating has good electrical contact performance, small contact resistance, high hardness, plugging resistance, sweat corrosion resistance, chemical corrosion resistance, electrolytic corrosion resistance and the like. The second rhodium alloy plating layer 16 is disposed on the outermost layer (except the gold plating layer 13), so that the conductive terminal can be effectively prevented from being corroded by electrolysis and chemical corrosion, and the conductive terminal can be better protected.
Referring to fig. 2, a conductive terminal (not labeled) according to a second embodiment of the present invention is made of a copper metal plate 21, the conductive terminal includes a contact area for mating with a mating connector (not shown), the contact area is formed by electroplating a metal plating layer 2 on a surface of the copper metal plate 21, the metal plating layer 2 is sequentially electroplated from the surface of the copper metal plate 21: the nickel plating layer 22, the gold plating layer 23, the first corrosion-resistant layer 24, the gold plating layer 23, the first rhodium alloy plating layer 25, the second rhodium alloy plating layer 26 and the gold plating layer 23, wherein the nickel plating layer 22 and the first corrosion-resistant layer 24 are corrosion-resistant layers and have chemical corrosion resistance. In this embodiment, the thickness of the first rhodium alloy plating layer 25 is smaller than that of the second rhodium alloy plating layer 26, so as to facilitate the electroplating of the second rhodium alloy plating layer 26, and thus the first rhodium alloy plating layer 25 can be better bonded to the second rhodium alloy plating layer 26. The functions of the other plating layers are the same as those of the first embodiment, and will not be described in detail here.
Referring to fig. 3, a conductive terminal (not labeled) according to a third embodiment of the present invention is made of a copper metal plate 31, the conductive terminal includes a contact area for mating with a mating connector (not shown), the contact area is formed by electroplating a metal plating layer 3 on a surface of the copper metal plate 31, the metal plating layer 3 is sequentially electroplated from the surface of the copper metal plate 31: a nickel plating layer 32, a gold plating layer 33, a first rhodium alloy plating layer 34, a second rhodium alloy plating layer 35, a gold plating layer 33, a first corrosion-resistant layer 36, a gold plating layer 33, a third rhodium alloy plating layer 37, and a gold plating layer 33. In this embodiment, the three rhodium alloy plating layers (including the first, second, and third rhodium alloy plating layers) are electroplated with better resistance to electrolytic corrosion. The functions of the other plating layers are the same as those of the first embodiment, and will not be described in detail here.
In summary, the conductive terminal of the present invention has the following beneficial effects: the invention at least electroplates two rhodium alloy plating layers, namely the first rhodium alloy plating layer and the second rhodium alloy plating layer on the surface of the conductive terminal, and the resistance to electrolytic corrosion and chemical corrosion is better than that of only electroplating one rhodium alloy plating layer under the same thickness. The conductive terminal is used for a USB Type-C electric connector.
The above description is only a part of the embodiments of the present invention, and not all embodiments, and any equivalent variations of the technical solutions of the present invention, which are made by those skilled in the art through reading the present specification, are covered by the claims of the present invention.
Claims (10)
1. A conductive terminal is made of a copper metal plate and comprises a contact area for butting with a butting connector, and a metal plating layer is formed on the surface of the contact area in an electroplating mode; the method is characterized in that: the metal plating layer comprises at least two rhodium alloy plating layers, a corrosion-resistant layer and gold plating layers arranged at intervals, wherein two rhodium alloy plating layers are arranged in close proximity to each other in the at least two rhodium alloy plating layers.
2. An electrically conductive terminal as claimed in claim 1, wherein: and in the two rhodium alloy plating layers which are arranged next to each other, the thickness of the rhodium alloy plating layer on the inner side is smaller than that of the rhodium alloy plating layer on the outer side.
3. An electrically conductive terminal as claimed in claim 1, wherein: the corrosion-resistant layer comprises at least two layers, and the two rhodium alloy plating layers which are arranged next to each other are positioned between the corrosion-resistant layers.
4. An electrically conductive terminal as claimed in claim 1, wherein: of the at least two rhodium alloy plating layers, two rhodium alloy plating layers are spaced apart by the corrosion-resistant layer.
5. An electrically conductive terminal as claimed in claim 4, wherein: one rhodium alloy coating belongs to one of two adjacent rhodium alloy coatings and one of rhodium alloy coatings arranged at intervals.
6. An electrically conductive terminal as claimed in claim 1, wherein: and one rhodium alloy coating is positioned on the secondary outer layer of the metal coating, and the gold coating is plated on the outer side of the rhodium alloy coating.
7. An electrically conductive terminal as claimed in claim 1, wherein: the corrosion-resistant layer comprises a nickel-plated layer and a first corrosion-resistant layer, wherein the nickel-plated layer and the first corrosion-resistant layer are arranged close to the surface of the metal copper plate, the first corrosion-resistant layer is a palladium-plated layer or a palladium-plated alloy layer or a silver-plated layer or a platinum-plated layer, and the two rhodium alloy plated layers and the corrosion-resistant layer which are arranged close to each other are connected through a gold-plated layer.
8. An electrically conductive terminal as claimed in claim 7, wherein: the surface of the metal copper plate is sequentially provided with the nickel plating layer, the gold plating layer, the first corrosion-resistant layer, the gold plating layer, the first rhodium alloy plating layer, the second rhodium alloy plating layer and the gold plating layer.
9. An electrically conductive terminal as claimed in claim 7, wherein: the surface of the metal copper plate is sequentially provided with a nickel plating layer, a gold plating layer, a first rhodium alloy plating layer, a second rhodium alloy plating layer, a gold plating layer, a first corrosion-resistant layer, a gold plating layer, a third rhodium alloy plating layer and a gold plating layer.
10. An electrically conductive terminal as claimed in any one of claims 1 to 9, wherein: the conductive terminal is used for the USB electric connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110570660.3A CN113381215A (en) | 2019-10-30 | 2019-10-30 | Conductive terminal |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911043099.2A CN110829080B (en) | 2019-10-30 | 2019-10-30 | Conductive terminal |
| CN202110570660.3A CN113381215A (en) | 2019-10-30 | 2019-10-30 | Conductive terminal |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911043099.2A Division CN110829080B (en) | 2019-10-30 | 2019-10-30 | Conductive terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113381215A true CN113381215A (en) | 2021-09-10 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110570660.3A Pending CN113381215A (en) | 2019-10-30 | 2019-10-30 | Conductive terminal |
| CN201911043099.2A Active CN110829080B (en) | 2019-10-30 | 2019-10-30 | Conductive terminal |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911043099.2A Active CN110829080B (en) | 2019-10-30 | 2019-10-30 | Conductive terminal |
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| Country | Link |
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| CN (2) | CN113381215A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111304704A (en) * | 2020-04-20 | 2020-06-19 | 苏州普瑞得电子有限公司 | Additive for improving bending test reliability of surface treatment product |
| CN111525314B (en) * | 2020-05-05 | 2023-06-20 | 富士康(昆山)电脑接插件有限公司 | Conductive terminal |
| CN114094373A (en) * | 2020-06-22 | 2022-02-25 | 华为技术有限公司 | Conductive terminal, electric connector and electronic equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5067127B2 (en) * | 2007-11-06 | 2012-11-07 | 住友電気工業株式会社 | Contact probe and manufacturing method thereof |
| JP6050664B2 (en) * | 2012-06-27 | 2016-12-21 | Ｊｘ金属株式会社 | METAL MATERIAL FOR ELECTRONIC COMPONENT AND ITS MANUFACTURING METHOD, CONNECTOR TERMINAL USING THE SAME, CONNECTOR AND ELECTRONIC COMPONENT |
| CN103484905B (en) * | 2013-10-12 | 2015-11-18 | 中南大学 | A kind of method of electroplating rhodium layer |
| CN108866585B (en) * | 2017-05-08 | 2021-01-05 | 永保科技(深圳)有限公司 | Refractory metal or stainless steel with electroplated layer on surface and electroplating process for surface of refractory metal or stainless steel |
| CN208733254U (en) * | 2018-08-19 | 2019-04-12 | 东莞普瑞得五金塑胶制品有限公司 | It is a kind of using nickel as the electroplated layer of resistance to plug of substrate and terminal |
| CN110350339B (en) * | 2018-08-29 | 2022-04-22 | 富士康(昆山)电脑接插件有限公司 | Conductive terminal, manufacturing method thereof and electric connector |
| CN211126162U (en) * | 2019-08-05 | 2020-07-28 | 富士康(昆山)电脑接插件有限公司 | Conductive terminal |
-
2019
- 2019-10-30 CN CN202110570660.3A patent/CN113381215A/en active Pending
- 2019-10-30 CN CN201911043099.2A patent/CN110829080B/en active Active
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| Publication number | Publication date |
|---|---|
| CN110829080B (en) | 2021-06-18 |
| CN110829080A (en) | 2020-02-21 |
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