CN101550576B - Zinc-nickel alloy nano multilayer film - Google Patents

Zinc-nickel alloy nano multilayer film Download PDF

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Publication number
CN101550576B
CN101550576B CN2009100943669A CN200910094366A CN101550576B CN 101550576 B CN101550576 B CN 101550576B CN 2009100943669 A CN2009100943669 A CN 2009100943669A CN 200910094366 A CN200910094366 A CN 200910094366A CN 101550576 B CN101550576 B CN 101550576B
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nickel
coating
multilayer film
zinc
content
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CN101550576A (en
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张英杰
闫宇星
董鹏
宋凡子
章江洪
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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Abstract

The present invention discloses a nano multilayer film with zinc-nickel alloy plated on the surface, belong to surface treatment technique of components and metallic materials field. The plating layeris alternately overlayed by low nickel layer and high nickel layer, wherein nickel content of the low nickel layer is about 14%, and nickel content of the high nickel layer is about 78%, the modulati on wavelength is about 240 nm. The invention is provided with advantages of higher corrosion resistance, rigidity, compactness, wearing resistance, high-temperature resistance, easy solderability and pretty appearance.

Description

A kind of zinc-nickel alloy nano multilayer film
Technical field
The present invention relates to a kind of coating surface has zinc-nickel alloy nano multilayer film coating, belongs to iron and steel parts and metal material surface processing technology field.
Background technology
Corrosion and corrosion protection is related to Economic development and people's life safety, and surface engineering technology is to solve component of machine and material corrosion and most economical effective means of protection and method.Along with the develop rapidly of modern industry and science and technology, more and more higher to the performance requriements of component of machine and material surface, process for treating surface has also had development rapidly thereupon.Surface engineering technology can use chemistry, physics or electrochemical method to come component or material surface are handled, and makes its surface form various protective layers, improves the work-ing life of component or material.Alloy compound surface deposition (galvanic deposit or electroless plating) compare with the monometallic surface deposition because of it have higher solidity to corrosion, hardness, compactness, wear resistance, high thermal resistance, weldability and beautiful outward appearance, and obtained using widely.
In recent years, people have given very big concern to the research and development nano-multilayer film.On the basis of constantly improving the galvanic deposit nano-multilayer film, developed the nano-multilayer film product and the technology of better performances such as Cu/Ni, Co/Cu, Co/Pt, but many research as magnetic property, the rarely seen report of the research aspect corrosion resistance coating.
The admiro plating has obtained widespread use as the protective coating of iron and steel.In order to satisfy to component or material property requirements at the higher level, research and application have all been strengthened both at home and abroad to the plating of zinc base alloys such as Zn-Fe, Zn-Ni, Sn-Zn, Zn-Co, Zn-Mn, Zn-Cr, Zn-Ti, Zn-Co-Cr, Zn-Co-Fe, Zn-Ni-P, Zn-Fe-P, wherein therefore the admiro multilayer film is studied by numerous mechanisms because of having good solidity to corrosion.
Because the deposition of admiro belongs to unusual codeposition, traditional viewpoint is thought when nickel content reaches 13% in the zn-ni alloy deposits, the solidity to corrosion of coating is best, so the problem that conventional admiro additive mainly solves is exactly the zinc-nickel alloy electrolyte of managing unusual codeposition, when plating, nickel content is near to 13% in the control coating, but such additive is deleterious for the deposit multilayer film.What the multilayer film deposition required is the change that realizes nickel content in the coating under different deposition current in same plating bath, realize that to reach the different superpositions that contains nickel dam realizes multiple stratification when the ALT pulse, the outward appearance that guarantees coating simultaneously is bright and clean smooth, has certain ornamental.Corrosion resistance of coating is better, has higher hardness (for conventional zn-ni alloy deposits), wear resistance, and do not need to plate aftertreatment technology, save cost, efficient quick, handled easily.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of existing higher hardness, solidity to corrosion, wear resistance, pyro-oxidation resistance are provided, the zinc-nickel alloy nano multilayer film coating of high compactness, ornamental (outward appearance), high comprehensive performance is arranged again; Utilize electro-plating method and the electrolytic solution do not need Passivation Treatment, just can obtain high anti-corrosion, abrasion coating, technology simply, safety, handled easily.
Technology contents of the present invention is: this coating surface zinc-nickel alloy nano multilayer film, coating is the different admiro superposition layers that contain nickel dam.Nickel content is about 14% in the wherein low after testing nickel dam, and the nickel content of high nickel dam is about 78%, and modulation wavelength is 240nm, and thickness in monolayer is in this scope of 100-150nm.Thickness of coating and each constituent content are determined in given range according to actual needs.
Produce this adoptable electro-plating method in iron and steel parts surface, be included in electroplate before to described component polish washing, oil removing, wash, remove corrosion then, after washing, put into the plating tank electroplate liquid again, electroplate liquid stirs or leaves standstill down and carries out galvanized step, also be included in and carry out taking out after the electrolysis step that described component are washed, dried from electroplate liquid, the electroplate liquid that is adopted includes as the salt of the Ni salt of main salt and Zn, as the NH of conducting salt 4Cl, as the H of buffer reagent 3BO 3, electroplate liquid consists of: NiCl 26H 2O100~180g/L, ZnCl 220~80g/L, NH 4Cl 180~220g/L, H 3BO 320~40g/L, additive 0.5~5g/L; Additive is one or more the arbitrary combination in peregal, asccharin, the sodium lauryl sulphate etc.The pH value of plating bath is 3~5, electroplate power supply mode and be the output pulse power supply, concrete parameter is: the control average current density is that 0.3A, first pulse duty factor are 0.01, working hour 20s, second duty of ratio is 0.5, working hour 40s, and reverse impulse output mean current all is 0.2A, dutycycle is 0.1, working hour 10ms; Temperature is a room temperature.
The content of each constituent or processing parameter such as choose and plating time can specifically be selected according to the required thickness of coating of reality, hardness, density etc. in providing scope.
The present invention adopts the laminated coating of zinc-nickel alloy nano multilayer film, thereby makes hardness, wear resistance, the significantly raising of coating; And owing to Ni in the electroplating bath solution 2+Quantity big, make in the coating Ni content bigger, make coating outward appearance light, the good compactness that has and the advantage of ornamental (outward appearance).In acidic medium, the reaction of coating and medium mainly is zinc, nickel and H +Reaction, the solidity to corrosion of coating depends primarily on matrix metal nickel and H +The speed degree of reaction, and the specific activity zinc of nickel in acid is poor, so higher Ni content improves its solidity to corrosion to acid in the coating.The multilayer alloy layer alternately exists, and the corrosion speed of having slowed down coating can hinder airborne O again 2In coating, permeate, thereby slowed down Zn greatly (OH) 2, Ni (OH) 2And Fe (OH) 3Generation, corrosion resistance of coating is improved greatly.Because the effect of higher Ni content makes coating not need Passivation Treatment just can reach higher solidity to corrosion in the coating, has simplified the production technique link greatly, has reduced environmental pollution, has improved production security.
Therefore, this coating surface has zinc-nickel alloy nano multilayer film to have the high advantage of hardness, solidity to corrosion, wear resistance, high-temperature oxidation, compactness and over-all properties.In addition, employed electroplating technology and electrolytic solution have does not need to plate aftertreatment technology, saves cost, efficient quick, the advantage of handled easily.
Description of drawings
Fig. 1 is a multi-layer film structure synoptic diagram of the present invention.White portion is represented high nickel dam among the figure, and black is partly represented low nickel dam.
Embodiment
Further specify flesh and blood of the present invention with example below, but content of the present invention is not limited to this.
Before electroplating to described component polish washing, oil removing, wash then, remove corrosion, again after washing, put into the plating tank electroplate liquid, electroplate to stir or leave standstill down and carry out at electroplate liquid, the described component of taking-up are washed, are dried from electroplate liquid after carrying out electrolysis.The electroplate liquid that adopts contains as the salt of the Ni salt of main salt and Zn, as the NH of conducting salt 4Cl, as the H of buffer reagent 3BO 3, consist of as electroplate liquid: NiCl 26H 2O 100~180g/L, ZnCl 220~80g/L, NH 4Cl 180~220g/L, H 3BO 320~40g/L, additive 0.5~5g/L; Additive is one or more the arbitrary combination in peregal, asccharin, the sodium lauryl sulphate etc.The pH value of plating bath is 3~5, electroplate power supply mode and be the output pulse power supply, concrete parameter is: the control average current density is that 0.3A, first pulse duty factor are 0.01, working hour 20s, second duty of ratio is 0.5, working hour 40s, and reverse impulse output mean current all is 0.2A, dutycycle is 0.1, working hour 10s; Temperature is a room temperature.
The content of each constituent or processing parameter such as choose and plating time also can specifically be selected according to the required thickness of coating of reality, hardness, density etc. in providing scope.
Embodiment 1: coating surface has the steel plate of zinc-nickel alloy nano multilayer film, and its coating is zinc-nickel alloy nano multilayer film, and the nickel content of low by weight nickel dam is 14.07% in the coating, the nickel content content of high nickel dam is 77.35%, and the thickness of coating is 8.0 * 10 -3Mm.
Concrete steps are: with steel plate before electroplating to described component polish washing, oil removing, wash, remove corrosion then, after washing, put into plating tank electroplate liquid and electrolytic solution stirred or leave standstill again, after carrying out electrolysis, from electrolytic solution, take out component and wash oven dry.The pH value of plating bath is 3.5, and the power supply mode of plating is that pulse output power supply, temperature are that room temperature, time are 25 minutes.
Electrolytic solution contains as the salt of the Ni of main salt and Zn, as the NH of conducting salt 4Cl, as the H of buffer reagent 3BO 3, it specifically consists of: NiCl 26H 2O140g/L, ZnCl 250g/L, NH 4Cl220g/L, H 3BO 330g/L, peregal 0.3g/L, asccharin 0.015g/L, sodium lauryl sulphate 0.03g/L.
Embodiment 2: coating surface has the nut of zinc-nickel alloy nano multilayer film, and its coating is zinc-nickel alloy nano multilayer film, and the nickel content of low by weight nickel dam is 14.20% in the coating, the nickel content content of high nickel dam is 76.8%, and the thickness of coating is 7.5 * 10 -3Mm.
The method for electroplating surface of this nut, comprise nut before electroplating to described component polish washing, oil removing, wash, remove corrosion then, after washing, put into plating tank electroplate liquid and electrolytic solution stirred or leave standstill again, after carrying out electrolysis, from electrolytic solution, take out component and wash oven dry.The pH value of plating bath is 3.5, and the power supply mode of plating is that pulse output power supply, temperature are that room temperature, time are 20 minutes.
Electrolytic solution contains as the salt of the Ni of main salt and Zn, as the NH of conducting salt 4Cl, as the H of buffer reagent 3BO 3, it specifically consists of: NiCl 26H 2O 140g/L, ZnCl 250g/L, NH 4Cl 220g/L, H 3BO 330g/L, peregal 0.3g/L, asccharin 0.015g/L, sodium lauryl sulphate 0.03g/L.
Embodiment 3: coating surface has the pump chamber liner of zinc-nickel alloy nano multilayer film, and its coating is zinc-nickel alloy nano multilayer film, and the nickel content of low by weight nickel dam is 13.9% in the coating, the nickel content content of high nickel dam is 77.5%, and the thickness of coating is 8.5 * 10 -3Mm.
The method for electroplating surface of this pump chamber liner, comprise the pump chamber liner before electroplating to described component polish washing, oil removing, wash, remove corrosion then, after washing, put into plating tank electroplate liquid and electrolytic solution stirred or leave standstill again, after carrying out electrolysis, from electrolytic solution, take out component and wash oven dry.The pH value of plating bath is 3.5, and the power supply mode of plating is that pulse output power supply, temperature are that room temperature, time are 30 minutes.
Electrolytic solution contains as the salt of the Ni of main salt and Zn, as the NH of conducting salt 4Cl, as the H of buffer reagent 3BO 3, it specifically consists of: NiCl 26H 2O 140g/L, ZnCl 250g/L, NH 4Cl 220g/L, H 3BO 330g/L, peregal 0.3g/L, asccharin 0.015g/L, sodium lauryl sulphate 0.03g/L.
Zinc-nickel alloy nano multilayer film coating of the present invention and Zn, Zn-Ni coating is corrosion proof comparative result (equal thickness) in 5%NaCl solution:
The coating classification Begin the time of getting rusty/h
?Zn 13
?Zn-Ni(Ni%=13.2%) 66
Zinc-nickel alloy nano multilayer film 172

Claims (2)

1. zinc-nickel alloy nano multilayer film, it is characterized in that: coating alternately is formed by stacking by low nickel dam and high nickel dam, and wherein low nickel dam nickel content is 14%, and the nickel content of high nickel dam is 78%, and modulation wavelength is the multilayer film of 240nm.
2. zinc-nickel alloy nano multilayer film according to claim 1 is characterized in that: the thickness in monolayer of described low nickel dam and high nickel dam is at 100-150nm, and the thickness of coating is (8~9) * 10 -3Mm.
CN2009100943669A 2009-04-17 2009-04-17 Zinc-nickel alloy nano multilayer film Expired - Fee Related CN101550576B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102383155A (en) * 2011-11-16 2012-03-21 中国船舶重工集团公司第七二五研究所 Zinc-nickel alloy electrolyte and preparation method of plating layer thereof
JP6813692B2 (en) * 2017-09-27 2021-01-13 株式会社日立製作所 Film laminate and its manufacturing method

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
I. IVANOV et al..Corrosion resistance of compositionally modulated Zn–Ni multilayers electrodeposited from dual baths.Journal of Applied Electrochemistry.2002,32 *
张英杰.电沉积金属多层膜的研究现状.材料保护.2007,40(8), *
李振明.调制波长对铜-镍纳米多层膜磨损性能的影响.烟台大学学报(自然科学与工程版).1999,12(3), *
费敬银.电沉积法制备组分调制Zn-Ni合金多层镀层.腐蚀科学与防护技术.2006,18(1), *

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