CN108085666A - A kind of method of Copper-Aluminum compound row surface passivation - Google Patents

A kind of method of Copper-Aluminum compound row surface passivation Download PDF

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Publication number
CN108085666A
CN108085666A CN201711292422.0A CN201711292422A CN108085666A CN 108085666 A CN108085666 A CN 108085666A CN 201711292422 A CN201711292422 A CN 201711292422A CN 108085666 A CN108085666 A CN 108085666A
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CN
China
Prior art keywords
copper
aluminum compound
stage
compound row
passivation
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Pending
Application number
CN201711292422.0A
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Chinese (zh)
Inventor
董晓文
王连忠
廉洋子
严操
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YANTAI FISEND BIMETAL CO Ltd
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YANTAI FISEND BIMETAL CO Ltd
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Priority to CN201711292422.0A priority Critical patent/CN108085666A/en
Publication of CN108085666A publication Critical patent/CN108085666A/en
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/02—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using non-aqueous solutions
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/78—Pretreatment of the material to be coated
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/82—After-treatment

Abstract

The present invention provides a kind of methods of Copper-Aluminum compound row's surface passivation, comprise the following steps：First stage：Pre-treatment；Second stage：It being once passivated, Copper-Aluminum compound row is passivated using a passivating solution, pH value is 5~6, between keeping 30 DEG C~60 DEG C of a passivating solution operating temperature, passivation time 3~5 minutes；Phase III：Washing, drying；Fourth stage：Secondary passivity, between keeping 18 DEG C~30 DEG C of secondary passivity liquid operating temperature, 4~6 minutes secondary passivity time；5th stage：Heat drying.The Copper-Aluminum compound row surface of the present invention forms oiliness conductive film, it can holding surface gloss, prevent surface discolouration, corrosion, the long-term color that continues to have, overlength salt fog resistance rustproof property, neutral salt spray test tolerance time can reach 72 it is small when more than, passivating film possesses preferable electric conductivity, and copper surface eddy conductivity maintains more than 97%IACS after Copper-Aluminum compound row's passivation.

Description

A kind of method of Copper-Aluminum compound row surface passivation
Technical field
The invention belongs to metallic composite surface passivation technique fields, and surface passivation is arranged more particularly to a kind of Copper-Aluminum compound Method.
Background technology
Copper-Aluminum compound row has obtained widely in traditional power transmission and distribution and some emerging high-end manufacture fields in recent years It promotes and applies, is one of new technologies and materials research and development direction that country is supported with the emphasis under aluminium section copper strategical planning.By Arranging surface and end in Copper-Aluminum compound has that copper, aluminium are exposed among air, two kinds of copper, aluminium metals in air and easily oxidation, Corrosion, influences the sheet resistance of product, seriously affects overlap joint performance, so to Copper-Aluminum compound on the premise of electric conductivity is ensured It is very crucial that row surface, which is passivated protection processing,.The prior art typically individually gives pure copper, fine aluminium row etc. blunt Change, and the passivation and pure copper, fine aluminium row for Copper-Aluminum compound row have the formula of fundamental difference and the difference of technique, directly use Single metal passivating method, which carries out operation, to be caused passivation effect poor or seriously affects sheet resistance etc..
The content of the invention
The present invention provides a kind of method of Copper-Aluminum compound row's surface passivation, the passivating film that this method provides can cover completely Lid copper, aluminium surface, while ensure electric conductivity, and promote product corrosion resistance.
What the technical solution adopted by the present invention was realized in：A kind of method of Copper-Aluminum compound row's surface passivation, including with Lower step：
First stage：Pre-treatment includes polishing, washing, oil removing, pickling；
Second stage：It is once passivated, Copper-Aluminum compound row is passivated using a passivating solution, a passivating solution main component bag Include the benzotriazole of 0.5g/L, the monohydrate potassium of 4g/L, the sulfosalicylic acid of 1g/L, the dodecyl sulphate of 0.2g/L The Sodium Molybdate Dihydrate of sodium, 0.6g/L, pH value is 5~6, once blunt between keeping 30 DEG C~60 DEG C of a passivating solution operating temperature Change 3~5 minutes time；
Phase III：Washing, drying；
Fourth stage：Secondary passivity, secondary passivity liquid main component include 78%~87% isomery solvent, 4%~6% inhibition Agent, 3%~8% passivator, 4%~10% bleeding agent, it is secondary blunt between keeping 18 DEG C~30 DEG C of secondary passivity liquid operating temperature Change 4~6 minutes time；
5th stage：Heat drying；
Preferably, it is to comprise the following steps：
First stage：Pre-treatment includes polishing, washing, oil removing, pickling；
Second stage：It is once passivated, Copper-Aluminum compound row is passivated using a passivating solution, a passivating solution main component bag Include the benzotriazole of 0.5g/L, the monohydrate potassium of 4g/L, the sulfosalicylic acid of 1g/L, the dodecyl sulphate of 0.2g/L The Sodium Molybdate Dihydrate of sodium, 0.6g/L, pH value 5.5, between keeping 50 DEG C of a passivating solution operating temperature, a passivation time 4 Minute；
Phase III：Washing, drying；
Fourth stage：Secondary passivity, secondary passivity liquid main component include 82% isomery solvent, 5% corrosion inhibiter, 6% passivation Agent, 8% bleeding agent, between keeping 25 DEG C of secondary passivity liquid operating temperature, 5 minutes secondary passivity time；
5th stage：Heat drying；
Preferably, the isomery solvent is isomeric alcohol polyethenoxy ether；
Preferably, it is that the corrosion inhibiter includes tetraethoxysilane, the methyl trimethoxy oxygroup silicon of 10%-15% of 66%-70% The imidazoline of alkane and 18%-22%；
Preferably, the isomerous tridecanol polyoxyethylene ether phosphate of the passivator including 34%-46%, 18%-22% γ- （2,3- glycidoxies）Propyl trimethoxy silicane, the sorbitan mono-oleic acid ester of 6%-12%, the hydroxy ethylidene two of 26%-33% Phosphonic acids；
Preferably, the bleeding agent is fatty alcohol polyoxyethylene ether.
The beneficial effects of the invention are as follows：1st, Copper-Aluminum compound row surface formed oiliness conductive film, can holding surface gloss, prevent Surface discolouration, corrosion, continue to have color for a long time.2nd, overlength salt fog resistance rustproof property, neutral salt spray test tolerance time are reachable To 72 it is small when more than.3rd, passivating film possesses preferable electric conductivity, Copper-Aluminum compound row（T2 copper）Copper surface eddy is conductive after passivation Rate maintains more than 97%IACS.
Specific embodiment
For a better understanding and implementation, the method for row's surface passivation is closed the following detailed description of a kind of copper aluminium：Including following Step：
The first step, polishing, Copper-Aluminum compound row surface polishing remove the oxide layer of piece surface, and to it is subtle the defects of place's progress Finishing；
The copper powder polished and left is washed off in second step, washing using clear water；
3rd step, oil removing, using 25% neutral cleaners, oil removing 5 minutes between 90 DEG C；
4th step, washing, the neutral cleaners taken out of are washed away using clear water；
5th step, pickling use 5% dilute sulfuric acid（H2SO4）Copper-Aluminum compound row surface is activated, while removal is not polished The oxide layer fallen, pickling 40 seconds under room temperature（Optional step can skip when polishing oil removing more thoroughly）；
6th step, washing, the residual sulfuric acid taken out of is washed away using clear water（Optional step can skip when polishing oil removing more thoroughly）；
7th step, is once passivated, and uses the benzotriazole of 0.5g/L（BTA）, 4g/L monohydrate potassium（CA）, 1g/L Sulfosalicylic acid（SSA）, 0.2g/L lauryl sodium sulfate（SDS）, 0.6g/L Sodium Molybdate Dihydrate（Na2MoO4·2H2O） A passivating solution being formulated（pH5.6）, it is passivated 3 minutes between 55 DEG C；
8th step, washing, washes away a remaining passivating solution；
9th step, drying using compressed air drying Copper-Aluminum compound row surface, prevent moisture from entering in the passivating solution of next step；
Tenth step, secondary passivity use 85% isomery solvent -- isomeric alcohol polyethenoxy ether, 5.5% corrosion inhibiter, 7% passivation The secondary passivity liquid that agent, 9% bleeding agent-fatty alcohol polyoxyethylene ether are formulated is passivated 4 minutes between 28 DEG C；
11st step, heat drying using 78 DEG C of hot-air seasonings, promote the corrosion resistance of passivating film.

Claims (6)

  1. A kind of 1. method of Copper-Aluminum compound row surface passivation, it is characterised in that comprise the following steps：
    First stage：Pre-treatment includes polishing, washing, oil removing, pickling；
    Second stage：It is once passivated, Copper-Aluminum compound row is passivated using a passivating solution, a passivating solution main component bag Include the benzotriazole of 0.5g/L, the monohydrate potassium of 4g/L, the sulfosalicylic acid of 1g/L, the dodecyl sulphate of 0.2g/L The Sodium Molybdate Dihydrate of sodium, 0.6g/L, pH value is 5~6, once blunt between keeping 30 DEG C~60 DEG C of a passivating solution operating temperature Change 3~5 minutes time；
    Phase III：Washing, drying；
    Fourth stage：Secondary passivity, secondary passivity liquid main component include 78%~87% isomery solvent, 4%~6% inhibition Agent, 3%~8% passivator, 4%~10% bleeding agent, it is secondary blunt between keeping 18 DEG C~30 DEG C of secondary passivity liquid operating temperature Change 4~6 minutes time；
    5th stage：Heat drying.
  2. 2. the method for a kind of Copper-Aluminum compound row surface passivation as described in claim 1, it is characterised in that comprise the following steps：
    First stage：Pre-treatment includes polishing, washing, oil removing, pickling；
    Second stage：It is once passivated, Copper-Aluminum compound row is passivated using a passivating solution, a passivating solution main component bag Include the benzotriazole of 0.5g/L, the monohydrate potassium of 4g/L, the sulfosalicylic acid of 1g/L, the dodecyl sulphate of 0.2g/L The Sodium Molybdate Dihydrate of sodium, 0.6g/L, pH value 5.5, between keeping 50 DEG C of a passivating solution operating temperature, a passivation time 4 Minute；
    Phase III：Washing, drying；
    Fourth stage：Secondary passivity, secondary passivity liquid main component include 82% isomery solvent, 5% corrosion inhibiter, 6% passivation Agent, 8% bleeding agent, between keeping 25 DEG C of secondary passivity liquid operating temperature, 5 minutes secondary passivity time；
    5th stage：Heat drying.
  3. 3. the method for a kind of Copper-Aluminum compound row surface passivation as claimed in claim 1 or 2, it is characterised in that the isomery is molten Agent is isomeric alcohol polyethenoxy ether.
  4. A kind of 4. method of Copper-Aluminum compound row surface passivation as claimed in claim 1 or 2, it is characterised in that the corrosion inhibiter The methyltrimethoxysilane of tetraethoxysilane, 10%-15% and the imidazoline of 18%-22% including 66%-70%.
  5. A kind of 5. method of Copper-Aluminum compound row surface passivation as claimed in claim 1 or 2, it is characterised in that the passivator The γ of isomerous tridecanol polyoxyethylene ether phosphate, 18%-22% including 34%-46%-（2,3- glycidoxies）Propyl front three Oxysilane, the sorbitan mono-oleic acid ester of 6%-12%, the 1-hydroxy ethylidene-1,1-diphosphonic acid of 26%-33%.
  6. A kind of 6. method of Copper-Aluminum compound row surface passivation as claimed in claim 1 or 2, it is characterised in that the bleeding agent It is fatty alcohol polyoxyethylene ether.
CN201711292422.0A 2017-12-08 2017-12-08 A kind of method of Copper-Aluminum compound row surface passivation Pending CN108085666A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109943854A (en) * 2019-03-27 2019-06-28 扬州洪顺电器有限公司 The anti-oxidant surface treatment method of busbar
CN112064000A (en) * 2020-08-17 2020-12-11 尹波 Passivation process for surface of aluminum alloy material
CN112080737A (en) * 2020-08-17 2020-12-15 尹波 Surface treatment method for communication radiator and product thereof

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Publication number Priority date Publication date Assignee Title
CN101445923A (en) * 2008-12-30 2009-06-03 罗冲 Passivation method for brass antitarnish
CN102651258A (en) * 2011-08-05 2012-08-29 苏州华铜复合材料有限公司 Method for producing copper-aluminum composite bus bar
CN103215611A (en) * 2013-03-27 2013-07-24 沈阳帕卡濑精有限总公司 Phosphorus-free water-based metal cleaning agent
CN106011826A (en) * 2016-08-11 2016-10-12 苏州欣天新精密机械有限公司 Method for protecting surface of copper-aluminium composite cover plate
CN106297960A (en) * 2016-08-23 2017-01-04 徐高磊 A kind of production technology of cable Copper-Aluminum compound band
CN106381485A (en) * 2016-08-30 2017-02-08 常熟市江南电热元件厂 Plug-in type electric heating tube
CN106756940A (en) * 2016-12-14 2017-05-31 刘兴旺 A kind of chemical treatment method for surfaces for low carbon steel plate before welding
CN107384628A (en) * 2017-08-02 2017-11-24 沈阳瑞驰表面技术有限公司 Motor train unit train skirtboard cleaning agent, preparation method and application method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101445923A (en) * 2008-12-30 2009-06-03 罗冲 Passivation method for brass antitarnish
CN102651258A (en) * 2011-08-05 2012-08-29 苏州华铜复合材料有限公司 Method for producing copper-aluminum composite bus bar
CN103215611A (en) * 2013-03-27 2013-07-24 沈阳帕卡濑精有限总公司 Phosphorus-free water-based metal cleaning agent
CN106011826A (en) * 2016-08-11 2016-10-12 苏州欣天新精密机械有限公司 Method for protecting surface of copper-aluminium composite cover plate
CN106297960A (en) * 2016-08-23 2017-01-04 徐高磊 A kind of production technology of cable Copper-Aluminum compound band
CN106381485A (en) * 2016-08-30 2017-02-08 常熟市江南电热元件厂 Plug-in type electric heating tube
CN106756940A (en) * 2016-12-14 2017-05-31 刘兴旺 A kind of chemical treatment method for surfaces for low carbon steel plate before welding
CN107384628A (en) * 2017-08-02 2017-11-24 沈阳瑞驰表面技术有限公司 Motor train unit train skirtboard cleaning agent, preparation method and application method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109943854A (en) * 2019-03-27 2019-06-28 扬州洪顺电器有限公司 The anti-oxidant surface treatment method of busbar
CN112064000A (en) * 2020-08-17 2020-12-11 尹波 Passivation process for surface of aluminum alloy material
CN112080737A (en) * 2020-08-17 2020-12-15 尹波 Surface treatment method for communication radiator and product thereof

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Application publication date: 20180529