CN210576587U - Electroplated layer for terminal surface, terminal and electronic interface - Google Patents
Electroplated layer for terminal surface, terminal and electronic interface Download PDFInfo
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- CN210576587U CN210576587U CN201921635947.4U CN201921635947U CN210576587U CN 210576587 U CN210576587 U CN 210576587U CN 201921635947 U CN201921635947 U CN 201921635947U CN 210576587 U CN210576587 U CN 210576587U
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Abstract
The utility model relates to an electroplate technical field, indicate a plating layer and terminal, electronic interface for terminal surface especially, the plating layer is including electroplating in proper order in the corrosion-resistant combined layer and the wear-resisting combined layer on terminal surface, and the wear-resisting combined layer is including the palladium plating layer, first gold plating layer and the rhodium ruthenium plating layer of electroplating in proper order, and palladium plating layer surface area is less than corrosion-resistant combined layer surface area, and the surface of terminal is electroplated the aforesaid the plating layer, electronic interface then has the aforesaid including electroplating the terminal of plating layer. The utility model provides a palladium plating layer, rhodium ruthenium layer play wear-resisting effect, and first gold plating layer plays the transitional action, and palladium plating layer adopts the local electroplating mode to electroplate, and the electroplating area of palladium plating layer is less than corrosion-resistant combined layer surface area, has practiced thrift the cost greatly.
Description
Technical Field
The utility model relates to an electroplate technical field, indicate especially a plating layer and terminal, electronic interface for terminal surface.
Background
Along with the popularization of electronic products, the application of the electronic products is more and more extensive, the electronic interfaces are often plugged and unplugged in the use process of the electronic products, the electronic interfaces with higher plugging frequency have higher wearability, worn places are easy to oxidize and corrode, poor electrical contact often occurs, in order to improve the wearability and the corrosion and oxidation resistance, the terminals of a plurality of electronic interfaces are electroplated with an electroplating coating at present, the electroplating coating generally comprises a layer of wear-resistant layer and an anti-oxidation corrosion layer, and in order to enhance the binding property of the electroplating coating and a substrate material, a transition layer is arranged between the electroplating coating and the substrate material, so that the adhesion can be increased. However, most of the materials of the existing transition layer are gold, silver, gold alloy and the like, so that the cost is high; in addition, the cost of plating thick noble metals (such as rhodium, rhodium ruthenium, palladium, and the like) is very high in order to achieve the effects of plugging resistance, wear resistance and corrosion resistance of the product.
Disclosure of Invention
In order to solve the problem, the utility model provides a plating layer and terminal, electronic interface for terminal surface, the cost is lower.
In order to achieve the above object, the present invention provides a plating layer for a terminal surface, including a corrosion-resistant composite layer and a wear-resistant composite layer which are sequentially plated on the terminal surface, wherein the wear-resistant composite layer includes a palladium plating layer, a first gold plating layer and a rhodium ruthenium plating layer which are sequentially plated, and the surface area of the palladium plating layer is smaller than that of the corrosion-resistant composite layer.
Preferably, the surface area of the palladium plating layer is larger than half of the surface area of the corrosion-resistant combination layer.
Preferably, the thickness of the palladium plating layer is 0.25-5 microns.
Preferably, the thickness of the first gold plating layer is 0.025 to 0.75 μm.
As a preferable scheme, the thickness of the rhodium ruthenium coating is 0.015-3 microns.
As a preferred scheme, the anti-corrosion composite structure further comprises a copper plating layer arranged between the anti-corrosion composite layer and the terminal, and the thickness of the copper plating layer is 0.3-5 micrometers.
As a preferable scheme, the corrosion-resistant combination layer comprises a first nickel-tungsten plating layer, a second gold plating layer, a second nickel-tungsten plating layer and a third gold plating layer which are electroplated in sequence, and the surface area of the second gold plating layer is smaller than that of the first nickel-tungsten plating layer.
Preferably, the thickness of the first nickel-tungsten coating is 0.5 to 5 micrometers, the thickness of the second gold coating is 0.025 to 0.5 micrometers, the thickness of the second nickel-tungsten coating is 0.25 to 8 micrometers, and the thickness of the third gold coating is 0.005 to 0.8 micrometers.
The utility model also provides a terminal, its surface is electroplated with the aforesaid the plating layer.
The utility model also provides an electronic interface, including the aforesaid terminal.
The beneficial effects of the utility model reside in that:
the utility model has the advantages that the corrosion-resistant combined layer and the wear-resistant combined layer are sequentially plated on the surface of the terminal, the plating structure combined by the plating layers has better wear resistance and corrosivity, and the adhesiveness between the electroplating plating layer and the base material is better; the wear-resistant combined layer mainly comprises a palladium plating layer, a first gold plating layer and a rhodium ruthenium plating layer, the palladium plating layer has high hardness, can improve the hardness of the terminal, prevents the terminal from bending and extending, is resistant to plugging and unplugging, and has certain corrosion resistance and oxidation resistance; the rhodium ruthenium plating can improve the electrical contact performance of the terminal, and the contact resistance is small; meanwhile, the alloy also has higher hardness and good corrosion resistance, plugging resistance and hand sweat electrolysis resistance; and first gold plating layer is as the transition layer, and the gold utensil has better ductility, can cushion or subduct the internal stress of above-mentioned two kinds of platings, prevents that the plating from appearing the crack. Thereby leading the electroplating coating to have better performance;
most importantly, the palladium coating is arranged on the surface of the previous coating (namely the corrosion-resistant combined layer) in a local electroplating mode, and the electroplating area of the palladium coating is smaller than that of the corrosion-resistant combined layer, so that the cost is effectively saved.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention.
The reference numbers illustrate: 1-copper plating; 2-palladium plating; 3-first gold plating; 4-rhodium ruthenium plating; 51-first nickel tungsten plating; 52-second gold plating; 53-second nickel tungsten coating; 54-third gold plating.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present invention relates to an electroplated layer for a terminal surface, including a corrosion-resistant composite layer and a wear-resistant composite layer sequentially electroplated on the terminal surface, the wear-resistant composite layer includes a palladium plating layer 2, a first gold plating layer 3 and a rhodium ruthenium plating layer 4, which are sequentially electroplated, and the surface area of the palladium plating layer 2 is smaller than that of the corrosion-resistant composite layer.
The utility model has the advantages that the corrosion-resistant combined layer and the wear-resistant combined layer are sequentially plated on the surface of the terminal, the plating structure combined by the plating layers has better wear resistance and corrosivity, and the adhesiveness between the electroplating plating layer and the base material is better; the wear-resistant combined layer mainly comprises a palladium plating layer 2, a first gold plating layer 3 and a rhodium ruthenium plating layer 4, the palladium plating layer 2 has high hardness, can improve the hardness of the terminal, prevents the terminal from bending and extending, is resistant to plugging and unplugging, and has certain corrosion resistance and oxidation resistance; the rhodium ruthenium plating layer 4 can improve the electrical contact performance of the terminal, and the contact resistance is small; meanwhile, the alloy also has higher hardness and good corrosion resistance, plugging resistance and hand sweat electrolysis resistance; and first gold plating layer 3 is as the transition layer, and the gold utensil has better ductility, can cushion or subduct the internal stress of above-mentioned two kinds of platings, prevents that the plating from appearing the crack. Thereby leading the electroplating coating to have better performance;
most importantly, the palladium plating layer is uniformly arranged on the surface of the last plating layer (namely the corrosion-resistant combined layer) in a local electroplating mode, and the electroplating area of the palladium plating layer 2 is smaller than that of the corrosion-resistant combined layer, so that the cost is effectively saved. Specifically, the surface area of the palladium plating layer 2 is larger than the area of one half of the surface of the corrosion-resistant combination layer.
In order to improve the conductivity of the existing electronic products, copper materials are generally used as substrates of terminals of the electronic products; be provided with copper plating 1 between corrosion-resistant combined layer and terminal, copper plating 1 can be fine with the basement and combine together, secondly can compensate the defect (such as slight pit etc.) on basement surface, and the roughness is higher, is favorable to subsequent electroplating. In addition, the thickness of the copper plating layer 1 is 0.3-5 micrometers, the thickness of the palladium plating layer 2 is 0.25-5 micrometers, the thickness of the first gold plating layer 3 is 0.025-0.75 micrometers, and the thickness of the rhodium ruthenium plating layer 4 is 0.015-3 micrometers.
The corrosion-resistant combination layer comprises a first nickel-tungsten plating layer 51, a second gold plating layer 52, a second nickel-tungsten plating layer 53 and a third gold plating layer 54, wherein the surface area of the second gold plating layer 52 is smaller than that of the first nickel-tungsten plating layer 51. By adopting the double-layer nickel-tungsten coating, the thickness of the wear-resistant layer can be effectively reduced, the cost is reduced, and meanwhile, the nickel-tungsten coating has better wear resistance and corrosion resistance, especially acid resistance; the second gold plating layer 52 and the third gold plating layer 54, which have a transition function, prevent the plating layer from cracking on one hand, so that the electroplating plating layer has better performance, and on the other hand, the second gold plating layer 52 also adopts a local electroplating mode, so that the electroplating area is greatly reduced, the cost is saved, and the surface area of the second gold plating layer 52 is larger than the area of one half of the surface of the first nickel-tungsten plating layer 51. Preferably, the thickness of the first nickel-tungsten plating layer 51 is 0.5 to 5 micrometers, the thickness of the second gold plating layer 52 is 0.025 to 0.5 micrometers, the thickness of the second nickel-tungsten plating layer 53 is 0.25 to 8 micrometers, and the thickness of the third gold plating layer 54 is 0.005 to 0.8 micrometers.
The palladium plating layer 2 and the second gold plating layer 52 are plating layers plated by a local plating method, and due to the local plating method, an unplated area exists on the surface of the upper plating layer, after the local plating, the next plating layer automatically fills the unplated area, and the plating layers of the local plating can be uniformly plated by other local plating methods such as a dot type, a straight line stripe, a diagonal line and the like, which is not described herein again.
The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.
Claims (10)
1. The utility model provides an electroplating layer for terminal surface, is including electroplating in terminal surface's corrosion-resistant combined layer and wear-resisting combined layer in proper order, its characterized in that: the wear-resistant combined layer comprises a palladium plating layer, a first gold plating layer and a rhodium ruthenium plating layer which are electroplated in sequence, and the surface area of the palladium plating layer is smaller than that of the corrosion-resistant combined layer.
2. A plating layer for a terminal surface according to claim 1, wherein: the surface area of the palladium plating layer is larger than the area of one half of the surface of the corrosion-resistant combination layer.
3. A plating layer for a terminal surface according to claim 1, wherein: the thickness of the palladium plating layer is 0.25-5 microns.
4. A plating layer for a terminal surface according to claim 1, wherein: the thickness of the first gold plating layer is 0.025-0.75 microns.
5. A plating layer for a terminal surface according to claim 1, wherein: the thickness of the rhodium ruthenium coating is 0.015-3 microns.
6. A plating layer for a terminal surface according to claim 1, wherein: the anti-corrosion composite structure further comprises a copper plating layer arranged between the anti-corrosion composite layer and the terminal, and the thickness of the copper plating layer is 0.3-5 microns.
7. A plating layer for a terminal surface according to claim 1, wherein: the corrosion-resistant combined layer comprises a first nickel-tungsten coating, a second gold coating, a second nickel-tungsten coating and a third gold coating which are electroplated in sequence, and the surface area of the second gold coating is smaller than that of the first nickel-tungsten coating.
8. A plating layer for a terminal surface according to claim 7, wherein: the thickness of the first nickel-tungsten coating is 0.5-5 microns, the thickness of the second gold coating is 0.025-0.5 microns, the thickness of the second nickel-tungsten coating is 0.25-8 microns, and the thickness of the third gold coating is 0.005-0.8 microns.
9. A terminal, characterized by: a surface thereof plated with the plating layer as set forth in any one of claims 1 to 8.
10. An electronic interface, characterized by: comprising the terminal of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921635947.4U CN210576587U (en) | 2019-09-27 | 2019-09-27 | Electroplated layer for terminal surface, terminal and electronic interface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921635947.4U CN210576587U (en) | 2019-09-27 | 2019-09-27 | Electroplated layer for terminal surface, terminal and electronic interface |
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| CN210576587U true CN210576587U (en) | 2020-05-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897648A (en) * | 2021-11-22 | 2022-01-07 | 东莞中探探针有限公司 | Connector terminal electroplating process |
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2019
- 2019-09-27 CN CN201921635947.4U patent/CN210576587U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897648A (en) * | 2021-11-22 | 2022-01-07 | 东莞中探探针有限公司 | Connector terminal electroplating process |
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