CN103924274A - Method for enhancing antioxidation capacity of foam copper - Google Patents
Method for enhancing antioxidation capacity of foam copper Download PDFInfo
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- CN103924274A CN103924274A CN201310009242.2A CN201310009242A CN103924274A CN 103924274 A CN103924274 A CN 103924274A CN 201310009242 A CN201310009242 A CN 201310009242A CN 103924274 A CN103924274 A CN 103924274A
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- foam copper
- copper
- resistance
- oxidation
- reinforced foam
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Abstract
The present invention relates to a method for enhancing antioxidation capacity of foam copper. The method comprises: placing foam copper in a nickel salt solution, connecting a power supply cathode, taking an electric conduction material as an anode, applying a certain voltage between the cathode and the anode, and cutting off the voltage after a certain time, wherein a layer of a nickel film is covered on the surface of the obtained foam copper, such that the antioxidation capacity of the foam copper is significantly increased, and significant influence on heat conduction, electric conduction and other performances of the foam copper can not be generated. The method has characteristics of high repeatability, simpleness and easy performing.
Description
Technical field
The invention belongs to protecting metallic surface field, particularly relate to the method for reinforced foam copper resistance of oxidation.
Background technology
Porous foam metal is the metallic substance that contains the vesicular structure of some amount, certain size aperture, certain voidage in a kind of metallic matrix, is in present material science, to develop swift and violent a kind of material.The features such as porous metal material has stereoscopic multi-layer three-dimensional structure, high-permeability, aperture is adjustable, therefore have the dual function of functional materials and structured material concurrently.Porous metal material has the functions such as damping, damping, noise reduction, heat insulation, fire-retardant, filtration, gas distribution, screening of nucleus, in productive life, has a wide range of applications.Foam copper is the one in foamed metal, has the total feature of above-mentioned foamed metal and function.Simultaneously, because metallic copper itself has the better heat conductivility of other common metal relatively, make foam copper have more advantage with respect to other foamed metals aspect heat sink material, therefore the wide hair of foam copper quilt is in the heat conduction and heat radiation of motor, electrical equipment and electronic devices and components; Due to the good heat conductivility of foam copper, become the fire retardant material of excellent performance, on a lot of advanced fire control equipments, obtain application abroad, especially there is excellent effect as flame isolation equipment.But than other metals (such as nickel), copper ratio is easier to oxidation, therefore, improve the resistance of oxidation of foam copper, for ensure and extend its serviceability and working life significant.A kind of approach of reinforced foam copper antioxidant property is to prepare on foam copper surface the organic layer that one deck is thin by chemical process at present, the foam copper that this method was processed resistance of oxidation at normal temperatures significantly improves, but the resistance of oxidation under hot environment does not but improve, and the thermal conductivity of foam copper after surface coverage organic film also has obvious reduction.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of method of reinforced foam copper resistance of oxidation, for solving prior art foam copper in the lower problem of the resistance of oxidation under hot environment.
For achieving the above object and other relevant objects, the invention provides a kind of method of reinforced foam copper resistance of oxidation, it comprises the following steps: a foam copper is put into nickel salt solution, and be connected to power cathode; Separately get an electro-conductive material as anode; Between negative and positive the two poles of the earth, add certain voltage, after for some time, cut off voltage; Obtain the foam copper of surface coverage one deck nickel film.
Preferably, described foam copper is three-dimensional netted material prepared by fine copper or copper alloy.
Preferably, described conducting strip is metallic substance.
Preferably, described metallic substance is simple substance or the alloy of copper, gold and silver, platinum, aluminium, iron.
Preferably, described conducting strip is the non-metallic material of conduction.
Preferably, described non-metallic material are graphite.
Preferably, described certain voltage is less than 100,000 volts for being greater than zero.
Preferably, described certain hour is less than 100,000 hours for being greater than zero.
The present invention is by improving the resistance of oxidation of foam copper at foam copper electroplating surface one deck nickel film, because the character such as heat conduction, conduction of metallic nickel and metallic copper is more close, simultaneously due to the thickness of nickel film with respect to foam copper as thin as a wafer, therefore foam copper performance such as shape, thickness, aperture, porosity, volume density and heat conduction, conduction surface coverage nickel film after own does not have obvious change.The present invention obviously strengthens the oxidation-resistance of foam copper; Method repeatability of the present invention is high, simple, is beneficial to extensive quantification and produces.
Brief description of the drawings
Fig. 1 a-Fig. 1 b is shown as the embodiment of the present invention 1 and processes front and back foam copper contrast photo, and wherein Fig. 1 a is photo before treatment, and Fig. 1 b is photo after treatment.
Fig. 2 a-2d is shown as untreated foam copper and the variation contrast with temperature rising color through the embodiment of the present invention 1 foam copper after treatment, wherein Fig. 2 a, Fig. 2 b, Fig. 2 c and Fig. 2 d respectively before corresponding heating, be heated to 180 DEG C, keep 10 minutes and keep the photo of 20 minutes at 180 DEG C at 180 DEG C.
Fig. 3 is shown as the photo of the rear foam copper of the embodiment of the present invention 2 processing.
Fig. 4 is shown as the photo of the rear foam copper of the embodiment of the present invention 3 processing.
Embodiment
Below, by specific specific examples explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this specification sheets.The present invention can also be implemented or be applied by other different embodiment, and the every details in this specification sheets also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
Refer to shown in Fig. 1 to Fig. 4.It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy and only show with assembly relevant in the present invention in graphic but not component count, shape and size drafting while implementing according to reality, when its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
A method for reinforced foam copper resistance of oxidation, comprises the following steps: foam copper is put into nickel salt solution, and connect power cathode; Separately get an electro-conductive material as anode; Between negative and positive the two poles of the earth, add certain voltage, after for some time, cut off voltage; The foam copper surface coverage one deck nickel film obtaining, obviously improves foam copper antioxidant property, and can not produce obviously impact to the performance such as heat conduction, conduction of foam copper.Described foam copper is three-dimensional netted material prepared by fine copper or copper alloy, and other parameters are not limit as parameters such as shape, thickness, aperture, porosity, volume densitys.Described nickel salt comprises all salts containing nickel element.Described nickel salt solution is any concentration proportioning.Described conducting strip comprises various metallic substance and non-metallic material.Described metallic substance comprises the metallic substance of any conduction, such as the simple substance of copper, gold and silver, platinum, aluminium, iron etc. or the alloy of these metals.Described non-metallic material are the non-metallic material of conduction, such as the non-metallic material of the carbonaceous materials such as graphite and other conductions.Described certain voltage is less than or equal to 100000 volts for being greater than 0.Preferably 1-2V left and right.Described certain hour is less than or equal to 100000 hours for being greater than 0.Preferably about 10-40 minute.
Embodiment 1
1) by NiCl powder and deionized water in the ratio wiring solution-forming of 1g/L;
2) using as the nickel sheet of anode or other tinsels with insert side by side the nickel salt solution preparing as the foam copper of negative electrode and be connected with the positive and negative electrode of direct supply respectively, between foam copper and nickel sheet, keep the distance of approximately 3 centimetres;
3) between positive and negative electrode, add 1.75V voltage;
4) powered-down after about 20 minutes.
Gained sample and photo before treatment are to such as shown in Fig. 1 b and 1a.Can find out from Fig. 1 b, compared with before processing, lower part of foam copper after treatment has become grey black, and upper part has a colour-darkening a little.Wherein grey black part is the part that foam copper immerses solution, and its surface has covered one deck nickel film after processing; Although upper part does not directly immerse solution, because siphonage occurs making upper part also to have a small amount of nickel to cover foam copper surface.
Process the antioxidant effect of rear foam copper in order to understand the present invention, foam copper after treatment embodiment 1 and a untreated foam copper of the same race have been carried out the oxidation control experiment under hot conditions by we.Experimental result is as shown in Figure 2 a-2d: wherein, Fig. 2 a is undressed foam copper and the photo comparison chart before example 1 foam copper heating after treatment; Fig. 2 b is undressed foam copper and the photo comparison chart in the time that example 1 foam copper after treatment is all heated to 180 DEG C; Fig. 2 c is undressed foam copper and is all heated to 180 DEG C and photo comparison chart while keeping 10 minutes through example 1 foam copper after treatment; Fig. 2 d is undressed foam copper and is all heated to 180 DEG C and photo comparison chart while keeping about 20 minutes through example 1 foam copper after treatment.
Can significantly find out from Fig. 2 a-2d; after heating; undressed foam copper is along with the prolongation color of heat-up time occurs significantly to change; and through lower part (foam copper immerses the part of solution) of the grey black of example 1 foam copper after treatment; due to the protection of surface nickel film; there is not considerable change in color, illustrates that foam copper oxidation-resistance after method of the present invention is processed obviously improves.
Embodiment 2
1) by NiCl powder and deionized water in the ratio wiring solution-forming of 1g/L;
2) using as the graphite (also can select the nonmetal of other carbonaceous material or other conductions) of anode with insert side by side the nickel salt solution preparing as the foam copper of negative electrode and be connected with the positive and negative electrode of direct supply respectively, between foam copper and graphite, keep the distance of approximately 3 centimetres;
3) between positive and negative electrode, add 1.75V voltage;
4) powered-down after 10 minutes.
Gained sample photo as shown in Figure 3.Than embodiment 1, the nickel film attenuation that after the minimizing treatment time, sample surfaces covers, therefore the color of sample lower part shoals with respect to the color sample of embodiment 1 gained.
Embodiment 3
Preparation method is with embodiment 1, and difference is that the making alive time changes 5 minutes into, and gained sample photo as shown in Figure 4.Than embodiment 1 and embodiment 2, it is thinner that the nickel film that after the minimizing treatment time, sample surfaces covers becomes, and what therefore the color of sample lower part became with respect to the color of the sample of embodiment 1 and embodiment 2 gained is more shallow.
In sum, the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (7)
1. a method for reinforced foam copper resistance of oxidation, is characterized in that, comprises the following steps: a foam copper is put into nickel salt solution, and be connected to power cathode; Separately get an electro-conductive material as anode; Between negative and positive the two poles of the earth, add certain voltage, after for some time, cut off voltage; Obtain the foam copper of surface coverage one deck nickel film.
2. the method for reinforced foam copper resistance of oxidation according to claim 1, is characterized in that: described foam copper is three-dimensional netted material prepared by fine copper or copper alloy.
3. the method for reinforced foam copper resistance of oxidation according to claim 1, is characterized in that: described electro-conductive material is metallic substance or non-metallic material.
4. the method for reinforced foam copper resistance of oxidation according to claim 3, is characterized in that: described metallic substance is simple substance or the alloy of copper, gold and silver, platinum, aluminium, iron.
5. the method for reinforced foam copper resistance of oxidation according to claim 3, is characterized in that: described non-metallic material are graphite.
6. the method for reinforced foam copper resistance of oxidation according to claim 1, is characterized in that: described certain voltage is less than 100,000 volts for being greater than zero.
7. the method for reinforced foam copper resistance of oxidation according to claim 1, is characterized in that: described certain hour is less than 100,000 hours for being greater than zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310009242.2A CN103924274A (en) | 2013-01-10 | 2013-01-10 | Method for enhancing antioxidation capacity of foam copper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310009242.2A CN103924274A (en) | 2013-01-10 | 2013-01-10 | Method for enhancing antioxidation capacity of foam copper |
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| CN103924274A true CN103924274A (en) | 2014-07-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245075A (en) * | 2016-08-25 | 2016-12-21 | 山东清大银光金属海绵新材料有限责任公司 | Sponge structure Fe Cr Mo alloy load iron/diatomite layer acoustic damping materials preparation method |
| CN108193234A (en) * | 2017-12-06 | 2018-06-22 | 常州鼎众冷暖设备工程有限公司 | A kind of preparation method of the anti-oxidant foam copper of permanent seal cooling |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1360356A (en) * | 2002-01-24 | 2002-07-24 | 南开大学 | Foam-metal current collector of secondary battery using zinc as negative electrode and its preparing process |
| CN101692491A (en) * | 2009-09-22 | 2010-04-07 | 哈尔滨工业大学 | Preparation method of three-dimensional foamed cobalt oxide cathode |
-
2013
- 2013-01-10 CN CN201310009242.2A patent/CN103924274A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1360356A (en) * | 2002-01-24 | 2002-07-24 | 南开大学 | Foam-metal current collector of secondary battery using zinc as negative electrode and its preparing process |
| CN101692491A (en) * | 2009-09-22 | 2010-04-07 | 哈尔滨工业大学 | Preparation method of three-dimensional foamed cobalt oxide cathode |
Non-Patent Citations (1)
| Title |
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| 张秋利 等: "电沉积制备多层泡沫铜/镍", 《有色金属（冶炼部分）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245075A (en) * | 2016-08-25 | 2016-12-21 | 山东清大银光金属海绵新材料有限责任公司 | Sponge structure Fe Cr Mo alloy load iron/diatomite layer acoustic damping materials preparation method |
| CN108193234A (en) * | 2017-12-06 | 2018-06-22 | 常州鼎众冷暖设备工程有限公司 | A kind of preparation method of the anti-oxidant foam copper of permanent seal cooling |
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Application publication date: 20140716 |