CN108842172A - A kind of method that eutectic solvent electro-deposition prepares stainless steel coating - Google Patents

A kind of method that eutectic solvent electro-deposition prepares stainless steel coating Download PDF

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Publication number
CN108842172A
CN108842172A CN201810618905.3A CN201810618905A CN108842172A CN 108842172 A CN108842172 A CN 108842172A CN 201810618905 A CN201810618905 A CN 201810618905A CN 108842172 A CN108842172 A CN 108842172A
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China
Prior art keywords
eutectic solvent
electro
deposition
stainless steel
coating
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CN201810618905.3A
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Chinese (zh)
Inventor
徐存英
朱啸林
华新
华一新
唐杰
刘海
王祥
黄梦婷
张启波
汝娟坚
李艳
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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Priority to CN201810618905.3A priority Critical patent/CN108842172A/en
Publication of CN108842172A publication Critical patent/CN108842172A/en
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00Electroplating: Baths therefor
    • C25D3/66Electroplating: Baths therefor from melts

Abstract

The present invention relates to a kind of methods that eutectic solvent electro-deposition prepares stainless steel coating, belong to Surface Engineering and technical field of surface.Under inert-gas environment, first quaternary ammonium salt and polyalcohol is formed into eutectic solvent after mixing, six water Nickel Chlorides, chromium chloride hexahydrate and four water irons, the eutectic solvent electrolyte being prepared then are added into eutectic solvent;Using chromium piece or inert electrode as anode, pretreated matrix is cathode, under conditions of to control eutectic solvent electrolyte temperature be 50~80 DEG C, tank voltage is 0.6~1.2V, anode and cathode distance are 1cm, 30~90min of electro-deposition in the eutectic solvent electrolyte being prepared, by the cathode base after electro-deposition through acetone, distilled water flushing, the coating of 304 or 316 stainless composition of steel can be obtained after dry on cathode base.Present invention seek to address that current efficiency present in existing stainless steel electroplating industry is low, it is difficult to the problems such as realizing clean manufacturing.

Description

A kind of method that eutectic solvent electro-deposition prepares stainless steel coating
Technical field
The present invention relates to a kind of methods that eutectic solvent electro-deposition prepares stainless steel coating, belong to Surface Engineering and surface Processing technology field.
Background technique
Since stainless steel has good heat-resisting quantity, mechanical property and magnetic resistance performance, it is widely used in every field. Meanwhile stainless steel has good corrosion resistance and biocompatibility in corrosive media, becomes the cheap biological device of exploitation The ideal chose of part.Fe-Cr-Ni has an interesting and unique performance, rich iron plating corrosion resistance with higher and higher resistance to Corrosion, rich nickel coating light reflectivity with higher and unique magnetism, if chromium content increases, alloy coat will have high hard Degree and corrosion-resistant etc..Stainless steel coating is obtained by electro-deposition and replaces stainless steel products, can make full use of the above-mentioned excellent of stainless steel Good characteristic, save the cost.At present there are mainly four types of the bath systems of electrodeposition of Fe-Cr-Ni alloy layer:Chloride system, sulphur Silicate system, chloride-sulfate mixed system and DMF- water solution system, need to be added a variety of complexing agents and additive.Together When organic additive in carbon can participate in deposition process, make Fe-Cr-Ni coating mix carbon, Coating composition be difficult to control, and With evolving hydrogen reaction, operation difficulty increases, and current efficiency reduces.Therefore a kind of environmental-friendly, stable bath system is found Have great importance.
Eutectic solvent is usually the quaternary ammonium salt and hydrogen-bond donor by certain stoichiometric ratio(Such as amide, hydroxy acid and polynary The compounds such as alcohol)The eutectic mixture being composed.Eutectic solvent has electrochemical window mouth width, dissolubility and electric conductivity Good, steam forces down and the advantages that good physical and chemical stability, is a kind of novel green solvent.In electrodeposit metals Aspect, since eutectic solvent has good electric conductivity and relatively negative reduction potential, i.e. electrodepositable is obtained greatly at room temperature The metal that majority can obtain in aqueous solution, and without side reaction, the metal quality because obtained from is good, and current efficiency is high.In addition, by In the preparation process of eutectic solvent, simple, low in raw material price, makes the brand-new electrolyte of electro-deposition nickel chromium triangle research, Non-ferrous metallurgy technology field has broad prospects.
Summary of the invention
For the above-mentioned problems of the prior art and deficiency, the present invention provides a kind of eutectic solvent electro-deposition preparation not The method of rust steel coating.Present invention seek to address that current efficiency present in existing stainless steel electroplating industry is low, it is difficult to realize clear The problems such as clean production.The invention is realized by the following technical scheme.
A kind of method that eutectic solvent electro-deposition prepares stainless steel coating, specific step is as follows:
Step 1, under inert-gas environment, be first 1 according to molar ratio by quaternary ammonium salt and polyalcohol:1~7 formed after mixing it is low Then congruent melting solvent is that six water Nickel Chlorides, chromium chloride hexahydrate and four are added in 20~80 DEG C of eutectic solvent to temperature Water iron, the eutectic solvent electrolyte being prepared;
Step 2, using chromium piece or inert electrode as anode, pretreated matrix be cathode, control eutectic solvent electrolyte Under conditions of temperature is 50~80 DEG C, tank voltage is 0.6~1.2V, anode and cathode distance are 1cm, it is prepared in step 1 Eutectic solvent electrolyte in 30~90min of electro-deposition done by the cathode base after electro-deposition through acetone, distilled water flushing The coating of 304 or 316 stainless composition of steel can be obtained after dry on cathode base.
Quaternary ammonium salt is choline chloride, benzyltriethylammonium chloride or beet alkali hydrochlorate in the step 1.
Polyalcohol is ethylene glycol, glycerine or mannitol in the step 1.
Six water Nickel Chlorides, chromium chloride hexahydrate and four water iron molar ratios are 1 in the step 1:6:3.
Inert electrode is graphite or terne metal in the step 2.
Matrix is copper sheet, mild steel or aluminium flake in the step 2.
The beneficial effects of the invention are as follows:The siderochrome nickel coating component content that can be prepared using this method and 304 and 316 Stainless steel is close, and the bright smooth densification of surface topography, strong with matrix binding ability, wearability and excellent corrosion resistance avoid The harm of Cr VI plating solution, it is environmental-friendly.
Detailed description of the invention
Fig. 1 is that electro-deposition stainless steel coating SEM schemes on 1 Copper substrate of the embodiment of the present invention;
Fig. 2 is that electro-deposition stainless steel coating EDS schemes on 1 Copper substrate of the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
The method that the eutectic solvent electro-deposition prepares stainless steel coating, specific step is as follows:
Step 1, under inert-gas environment, be first 1 according to molar ratio by quaternary ammonium salt and polyalcohol:3 form 50mL after mixing Then eutectic solvent is that six water Nickel Chlorides, chromium chloride hexahydrate and four water are added in 20 DEG C of eutectic solvent to temperature Iron, the eutectic solvent electrolyte being prepared;Wherein quaternary ammonium salt is choline chloride, and polyalcohol is ethylene glycol;Six Water Nickel Chloride, chromium chloride hexahydrate and four water iron molar ratios are 1:6:3;
Step 2, using chromium piece as anode, pretreated matrix(Copper sheet, pretreated process are that matrix is polished through sand paper, acetone Ultrasound, then cold wind dries up after distilled water flushing)It is 60 DEG C, tank voltage in control eutectic solvent electrolyte temperature for cathode Under conditions of being 1cm for 0.8V, anode and cathode distance, the electro-deposition in the eutectic solvent electrolyte that step 1 is prepared It is stainless can to obtain 316 by the cathode base after electro-deposition through acetone, distilled water flushing, after dry on cathode base by 60min The coating of composition of steel.
Electro-deposition stainless steel coating SEM figure is as shown in Figure 1, can be with from Fig. 1 on the Copper substrate that the present embodiment is prepared Find out, stainless steel plated layer compact is smooth, strong with matrix binding ability.Electro-deposition stainless steel coating EDS figure is such as Fig. 2 institute on Copper substrate Show, as can be seen from Figure 2 in coating Fe, Cr, Ni element content;It is examined using Shimadzu XRF-1800 type Xray fluorescence spectrometer Surveying siderochrome nickel content in coating is respectively 71wt%, 17wt% and 12wt%.
Embodiment 2
The method that the eutectic solvent electro-deposition prepares stainless steel coating, specific step is as follows:
Step 1, under inert-gas environment, be first 1 according to molar ratio by quaternary ammonium salt and polyalcohol:1 forms 50mL after mixing Then eutectic solvent is that six water Nickel Chlorides, chromium chloride hexahydrate and four water are added in 80 DEG C of eutectic solvent to temperature Iron, the eutectic solvent electrolyte being prepared;Wherein quaternary ammonium salt is benzyltriethylammonium chloride, polyalcohol third Triol;Six water Nickel Chlorides, chromium chloride hexahydrate and four water iron molar ratios are 1:6:3;
Step 2, using graphite as anode, pretreated matrix(Mild steel, pretreated process are that matrix is polished through sand paper, third Ketone ultrasound, then cold wind dries up after distilled water flushing)For cathode, eutectic solvent electrolyte temperature is being controlled as 50 DEG C, slot electricity Pressure is under conditions of 1.0V, anode and cathode distance are 1cm, and electricity is heavy in the eutectic solvent electrolyte that step 1 is prepared Product 30min can obtain 316 not after dry by the cathode base after electro-deposition through acetone, distilled water flushing on cathode base The coating of rust composition of steel(Iron, chromium, nickel content are respectively 70wt%, 16wt% and 14wt%).
Embodiment 3
The method that the eutectic solvent electro-deposition prepares stainless steel coating, specific step is as follows:
Step 1, under inert-gas environment, be first 1 according to molar ratio by quaternary ammonium salt and polyalcohol:6 form 50mL after mixing Then eutectic solvent is that six water Nickel Chlorides, chromium chloride hexahydrate and four water are added in 80 DEG C of eutectic solvent to temperature Iron, the eutectic solvent electrolyte being prepared;Wherein quaternary ammonium salt is benzyltriethylammonium chloride, polyalcohol third Triol;Six water Nickel Chlorides, chromium chloride hexahydrate and four water iron molar ratios are 1:6:3;
Step 2, with terne metal(Lead content is 90wt%, remaining as tin)For anode, pretreated matrix(Aluminium flake, pretreatment Process be matrix polish through sand paper, acetone ultrasound, then after distilled water flushing cold wind dry up)For cathode, eutectic is being controlled Under conditions of dissolvent electrolytic solution temperature is 80 DEG C, tank voltage 0.6V, anode and cathode distance are 1cm, it is prepared in step 1 Eutectic solvent electrolyte in electro-deposition 90min, by the cathode base after electro-deposition through acetone, distilled water flushing, after dry The coating of 316 stainless composition of steel can be obtained on cathode base(Iron, chromium, nickel content be respectively 73wt%, 16wt% and 11wt%).
Embodiment 4
The method that the eutectic solvent electro-deposition prepares stainless steel coating, specific step is as follows:
Step 1, under inert-gas environment, be first 1 according to molar ratio by quaternary ammonium salt and polyalcohol:7 form 50mL after mixing Then eutectic solvent is that six water Nickel Chlorides, chromium chloride hexahydrate and four water are added in 60 DEG C of eutectic solvent to temperature Iron, the eutectic solvent electrolyte being prepared;Wherein quaternary ammonium salt is benzyltriethylammonium chloride, polyalcohol third Triol;Six water Nickel Chlorides, chromium chloride hexahydrate and four water iron molar ratios are 1:6:3;
Step 2, with terne metal(Lead content is 90wt%, remaining as tin)For anode, pretreated matrix(Aluminium flake, pretreatment Process be matrix polish through sand paper, acetone ultrasound, then after distilled water flushing cold wind dry up)For cathode, eutectic is being controlled Under conditions of dissolvent electrolytic solution temperature is 80 DEG C, tank voltage 1.2V, anode and cathode distance are 1cm, it is prepared in step 1 Eutectic solvent electrolyte in electro-deposition 40min, by the cathode base after electro-deposition through acetone, distilled water flushing, after dry The coating of 304 stainless composition of steel can be obtained on cathode base(Iron, chromium, nickel content are respectively 74wt%, 18wt% and 8wt%).
In conjunction with attached drawing, the embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept Put that various changes can be made.

Claims (6)

1. a kind of method that eutectic solvent electro-deposition prepares stainless steel coating, it is characterised in that specific step is as follows:
Step 1, under inert-gas environment, be first 1 according to molar ratio by quaternary ammonium salt and polyalcohol:1~7 formed after mixing it is low Then congruent melting solvent is that six water Nickel Chlorides, chromium chloride hexahydrate and four are added in 20~80 DEG C of eutectic solvent to temperature Water iron, the eutectic solvent electrolyte being prepared;
Step 2, using chromium piece or inert electrode as anode, pretreated matrix be cathode, control eutectic solvent electrolyte Under conditions of temperature is 50~80 DEG C, tank voltage is 0.6~1.2V, anode and cathode distance are 1cm, it is prepared in step 1 Eutectic solvent electrolyte in 30~90min of electro-deposition done by the cathode base after electro-deposition through acetone, distilled water flushing The coating of 304 or 316 stainless composition of steel can be obtained after dry on cathode base.
2. the method that eutectic solvent electro-deposition according to claim 1 prepares stainless steel coating, it is characterised in that:It is described Quaternary ammonium salt is choline chloride, benzyltriethylammonium chloride or beet alkali hydrochlorate in step 1.
3. the method that eutectic solvent electro-deposition according to claim 1 prepares stainless steel coating, it is characterised in that:It is described Polyalcohol is ethylene glycol, glycerine or mannitol in step 1.
4. the method that eutectic solvent electro-deposition according to claim 1 prepares stainless steel coating, it is characterised in that:It is described Six water Nickel Chlorides, chromium chloride hexahydrate and four water iron molar ratios are 1 in step 1:6:3.
5. the method that eutectic solvent electro-deposition according to claim 1 prepares stainless steel coating, it is characterised in that:It is described Inert electrode is graphite or terne metal in step 2.
6. the method that eutectic solvent electro-deposition according to claim 1 prepares stainless steel coating, it is characterised in that:It is described Matrix is copper sheet, mild steel or aluminium flake in step 2.
CN201810618905.3A 2018-06-15 2018-06-15 A kind of method that eutectic solvent electro-deposition prepares stainless steel coating Pending CN108842172A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109989080A (en) * 2019-04-09 2019-07-09 西安交通大学 A kind of method that polyhydroxy ionic liquid electrodeposition prepares steel surface high-tin bronze Corrosion Resistant Film
CN110714212A (en) * 2019-10-12 2020-01-21 常州大学 Method for preparing super-hydrophobic nickel film in aqueous solution system by nickel chloride one-step method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105821453A (en) * 2016-04-27 2016-08-03 昆明理工大学 Method for electro-deposition of bright chrome plating layer through low-eutectic-melting solvent
CN106567110A (en) * 2016-11-07 2017-04-19 昆明理工大学 Method of electro-deposition of chromium-manganese alloy coating through deep-eutectic solvents
CN107761142A (en) * 2017-11-10 2018-03-06 昆明理工大学 A kind of method of eutectic solvent Electrodeposition Bath of Iron evanohm coating
CN108085723A (en) * 2017-11-28 2018-05-29 昆明理工大学 A kind of method of eutectic solvent Nickel-Chromium Electrodeposit coating

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105821453A (en) * 2016-04-27 2016-08-03 昆明理工大学 Method for electro-deposition of bright chrome plating layer through low-eutectic-melting solvent
CN106567110A (en) * 2016-11-07 2017-04-19 昆明理工大学 Method of electro-deposition of chromium-manganese alloy coating through deep-eutectic solvents
CN107761142A (en) * 2017-11-10 2018-03-06 昆明理工大学 A kind of method of eutectic solvent Electrodeposition Bath of Iron evanohm coating
CN108085723A (en) * 2017-11-28 2018-05-29 昆明理工大学 A kind of method of eutectic solvent Nickel-Chromium Electrodeposit coating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109989080A (en) * 2019-04-09 2019-07-09 西安交通大学 A kind of method that polyhydroxy ionic liquid electrodeposition prepares steel surface high-tin bronze Corrosion Resistant Film
CN110714212A (en) * 2019-10-12 2020-01-21 常州大学 Method for preparing super-hydrophobic nickel film in aqueous solution system by nickel chloride one-step method

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Application publication date: 20181120