CN105154942A - Method for preparing Ni-P-WO3 nano-composite coating through pulse electrodeposition - Google Patents
Method for preparing Ni-P-WO3 nano-composite coating through pulse electrodeposition Download PDFInfo
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- CN105154942A CN105154942A CN201510647289.0A CN201510647289A CN105154942A CN 105154942 A CN105154942 A CN 105154942A CN 201510647289 A CN201510647289 A CN 201510647289A CN 105154942 A CN105154942 A CN 105154942A
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Abstract
The invention discloses a method for preparing a Ni-P-WO3 nano-composite coating through pulse electrodeposition. The method for preparing the Ni-P-WO3 nano-composite coating through pulse electrodeposition comprises the steps that firstly, a plating solution is prepared according to requirements; secondly, a carbon steel base body is preprocessed, namely the carbon steel base body is polished through abrasive paper, washed through distilled water, chemically deoiled, washed through distilled water, pickled, activated and washed through distilled water; and finally, plating is conducted. The optimum plating condition is determined with the deposition rate, the microhardness and the surface topography as inspection indexes. According to the method, operation is easy and convenient, control is easy, the plating solution is stable and not prone to going bad, and the prepared Ni-P-WO3 nano-composite coating has excellent performance and has excellent corrosion inhibition performance in simulated sea water; the coating has broad application prospects in the functional composite plating field.
Description
Technical field
The invention belongs to impulse electrodeposition technology field, particularly a kind of pulse electrodeposition prepares Ni-P-WO
3the method of nano-composite plate.
Background technology
Metal corrosion and protection technology is the focus of Chinese scholars research always.Environmental friendliness, high-performance and long-effective corrosion technology are also the major objectives of current scientist.Corrosion of metal has surface treatment and coating technology, inhibiter technology, cathode protection technology with protection major technique.Wherein photic cathode protection technology is the novel cathode guard method proposed by Japanese scholars the nineties in 20th century; semiconductor film is coated on protected metal; in protection process, semiconductor film is not sacrificed, and can become permanent protection coating, has the advantage of saving resource.TiO
2be a kind of stable, nontoxic, inexpensive semiconductor material, as cathodic protection coatings, can produce galvanic protection effect on the one hand under illumination, the existence of coating can avoid impressed current cathodic protection method to need the shortcoming of additional power source on the other hand.But photic cathode protection technology also also exists some technical problems: in the common substrate such as carbon steel, bonding force is insecure; to visible ray utilization ratio low (only absorbing UV-light); under dark-state, the quick compound of photo-generate electron-hole makes its protective efficacy low; these problems are keys that photic cathode protection technology moves towards practical, and this has important theoretical and practical significance for the protection realizing the metallic substance such as carbon steel under natural environmental condition.
In order to solve the problems referred to above that photic galvanic protection exists, scientists is to TiO
2exploratory development is carried out in modification doping.Find in existing research, at TiO
2the conductor oxidate with charge storage ability that is coupled in film can make its electronics discharging storage in the dark state and extend galvanic protection efficiency; And at TiO
2in coating, doping metals or non-metallic element can make its band gap reduce, and increase the utilization ratio of visible ray, but be mostly still in the exploratory stage, a lot of practical problems is not resolved.
Impulse electrodeposition technology is utilized first to prepare Ni-P-WO on plain steel
3nano-composite plate middle layer, not only can improve TiO
2the bonding force of coating and matrix, secondly can play WO
3storage electronic capability, outer TiO can be made
2coating continues to maintain photic galvanic protection effect in the dark state, and Ni-P coating after heat treatment in addition, and Ni, P can be used as doped element and be doped to TiO
2in coating, affect TiO
2energy band structure, improves its utilization ratio to visible ray, for photic galvanic protection is implemented to provide support smoothly.In addition, impulse electrodeposition technology is utilized to prepare Ni-P-WO
3electroplate liquid formulation and the processing method of nano-composite plate have not been reported.
Summary of the invention
The object of this invention is to provide a kind of pulse electrodeposition and prepare Ni-P-WO
3the method of nano-composite plate.
Thinking of the present invention: by utilizing impulse electrodeposition technology, by WO
3nanoparticle and Ni, P codeposition, preparation Ni-P-WO
3nano-composite plate, can be used as matrix and TiO
2the middle layer of layer, improves TiO
2the bonding force of coating and matrix, WO in coating
3particle can in performance storage electronic capability, and extend the photic galvanic protection time in the dark state, in this serving, Ni, P can be used as doped element and be doped to TiO in thermal treatment
2in coating, improve its utilization ratio to visible ray.This Ni-P-WO prepared
3nano-composite plate itself has excellent properties, WO
3uniform particle is distributed in coating, coating in the sodium chloride solution of 3.5% inhibition efficiency up to more than 90%.
Concrete steps are:
(1) plating solution is prepared
A. by NiSO
46H
2o, NiCl
26H
2o, H
2bO
3, NaH
2pO
4h
2o, asccharin, sodium lauryl sulphate are dissolved in distilled water obtain solution respectively, wherein NiSO
46H
2o concentration is 120g/L, NiCl
26H
2o concentration is 40g/L, H
2bO
3concentration is 36g/L, NaH
2pO
4h
2o concentration is 20g/L, asccharin concentration is 2g/L, and sodium lauryl sulphate concentration is 0.1g/L, and after volumetric flask constant volume, ageing 8h is stand-by; Agents useful for same is analytical pure.
B. measure step (1) a to walk in the solution injection electrolyzer of preparation, adjust ph, between 4 ~ 4.5, adds the nanometer WO that particle diameter is 95 ~ 105nm
3particle, in above-mentioned solution, is put into ultrasonic apparatus and is carried out ultrasonic vibration 1h and make nanometer WO
3uniform particle disperses and particle concentration is 2 ~ 2.5g/L.
(2) pre-treatment plain steel
Plain steel is followed these steps to carry out pre-treatment: sand papering, distillation washing, electrochemical deoiling, distillation washing, acid-wash activation, distillation are washed, weighed.
(3) plating is carried out
Pure Ni plate and step (2) pretreated plain steel being fixed on step (1) b walks in the electrolyzer of use; the plating solution that step (1) is prepared is filled in electrolyzer; wherein pure Ni plate is as anode; step (2) pretreated plain steel is as negative electrode; and connect with wire and the pulse power; electrolyzer is placed in water bath with thermostatic control, ensures in plating process, the bath temperature that step (1) obtains is at 55 ~ 60 DEG C; Arrange pulse parameter, controlling average current density is
j m=2 ~ 2.5A/dm
2, dutycycle R is 25 ~ 35%, and pulse-repetition is 100 ~ 150Hz, and the burst length is 30 ~ 40min, carries out plating i.e. obtained Ni-P-WO
3nano-composite plate.
The inventive method is simple, convenient, be easy to operate and control, bath stability, not perishable, the Ni-P-WO prepared
3nano-composite plate better performances, has good application prospect.
Embodiment
embodiment:
(1) plating solution is prepared
A. by NiSO
46H
2o, NiCl
26H
2o, H
2bO
3, NaH
2pO
4h
2o, asccharin, sodium lauryl sulphate are dissolved in distilled water obtain solution respectively, wherein NiSO
46H
2o concentration is 120g/L, NiCl
26H
2o concentration is 40g/L, H
2bO
3concentration is 36g/L, NaH
2pO
4h
2o concentration is 20g/L, asccharin concentration is 2g/L, and sodium lauryl sulphate concentration is 0.1g/L, and after volumetric flask constant volume, ageing 8h is stand-by; Agents useful for same is analytical pure.
B. measure step (1) a to walk in the solution injection electrolyzer of preparation, adjust ph, between 4 ~ 4.5, adds the nanometer WO that particle diameter is 100nm
3particle, in above-mentioned solution, is put into ultrasonic apparatus and is carried out ultrasonic vibration 1h and make nanometer WO
3uniform particle disperses and particle concentration is 2g/L.
(2) pre-treatment plain steel
Plain steel is followed these steps to carry out pre-treatment: sand papering, distillation washing, 60 DEG C of alkali liquor oil removing 15min, distillation washing, 5% chlorohydric acid pickling 3min, distillations are washed, weighed.
(3) plating is carried out
Pure Ni plate and step (2) pretreated plain steel being fixed on step (1) b walks in the electrolyzer of use; the plating solution that step (1) is prepared is filled in electrolyzer; wherein pure Ni plate is as anode; step (2) pretreated plain steel is as negative electrode; and connect with wire and the pulse power; electrolyzer is placed in water bath with thermostatic control, ensures in plating process, the bath temperature that step (1) obtains is at 60 DEG C; Arrange pulse parameter, controlling average current density is
j m=2A/dm
2, dutycycle R is 30%, and pulse-repetition is 150Hz, and the burst length is 35min, carries out plating i.e. obtained Ni-P-WO
3nano-composite plate.
The Ni-P-WO that the present embodiment is obtained
3plated layer compact is complete, and nano surface particle distribution is even, through X-ray diffractometer test coating phase structure, and WO
3nanoparticle dispersion is in coating, and under titanizing, coating is amorphous state, crystallization gradually after 200 DEG C, 400 DEG C, 600 DEG C thermal treatment, and microhardness is significantly increased after heat treatment; With with Ni-P-WO
3the carbon steel base of coating is Electrode, three-electrode system test is carried out in the sodium chloride solution of 3.5%, polarization curve and ac impedance spectroscopy test result show that coating has excellent corrosion mitigating effect, although its inhibition efficiency is not as good as Ni-P coating, also up to more than 90%, and pulse electrodeposition prepares Ni-P-WO
3coating is combined with matrix firmly, can as matrix and TiO
2the middle layer of layer, WO in coating
3particle can play storage electronic capability, and expectation can extend the photic galvanic protection time in the dark state, and Ni, P can be doped to TiO as doped element in thermal treatment
2in coating, estimate to improve its utilization ratio to visible ray.
Claims (1)
1. a pulse electrodeposition prepares Ni-P-WO
3the method of nano-composite plate, is characterized in that concrete steps are:
(1) plating solution is prepared
A. by NiSO
46H
2o, NiCl
26H
2o, H
2bO
3, NaH
2pO
4h
2o, asccharin, sodium lauryl sulphate are dissolved in distilled water obtain solution respectively, wherein NiSO
46H
2o concentration is 120g/L, NiCl
26H
2o concentration is 40g/L, H
2bO
3concentration is 36g/L, NaH
2pO
4h
2o concentration is 20g/L, asccharin concentration is 2g/L, and sodium lauryl sulphate concentration is 0.1g/L, and after volumetric flask constant volume, ageing 8h is stand-by; Agents useful for same is analytical pure;
B. measure step (1) a to walk in the solution injection electrolyzer of preparation, adjust ph, between 4 ~ 4.5, adds the nanometer WO that particle diameter is 95 ~ 105nm
3particle, in above-mentioned solution, is put into ultrasonic apparatus and is carried out ultrasonic vibration 1h and make nanometer WO
3uniform particle disperses and particle concentration is 2 ~ 2.5g/L;
(2) pre-treatment plain steel
Plain steel is followed these steps to carry out pre-treatment: sand papering, distillation washing, electrochemical deoiling, distillation washing, acid-wash activation, distillation are washed, weighed;
(3) plating is carried out
Pure Ni plate and step (2) pretreated plain steel being fixed on step (1) b walks in the electrolyzer of use; the plating solution that step (1) is prepared is filled in electrolyzer; wherein pure Ni plate is as anode; step (2) pretreated plain steel is as negative electrode; and connect with wire and the pulse power; electrolyzer is placed in water bath with thermostatic control, ensures in plating process, the bath temperature that step (1) obtains is at 55 ~ 60 DEG C; Arrange pulse parameter, controlling average current density is
j m=2 ~ 2.5A/dm
2, dutycycle R is 25 ~ 35%, and pulse-repetition is 100 ~ 150Hz, and the burst length is 30 ~ 40min, carries out plating i.e. obtained Ni-P-WO
3nano-composite plate.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105692700A (en) * | 2016-01-12 | 2016-06-22 | 江苏科技大学 | Preparation method and application of tungsten trioxide nanoparticles capable of stably suspending in plating solution with high ion concentration |
CN108149303A (en) * | 2016-12-06 | 2018-06-12 | 刘志红 | A kind of preparation process of Ni-P alloys base composite cladding |
Citations (5)
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CN1676674A (en) * | 2005-01-17 | 2005-10-05 | 上海大学 | Method for preparing nickel-phosphor alloy base composite cladding containing nano particle |
CN101008096A (en) * | 2006-12-29 | 2007-08-01 | 清华大学 | Method for electrodepositing Ni-W-P amorphous film on low carbon steel |
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2015
- 2015-10-09 CN CN201510647289.0A patent/CN105154942A/en active Pending
Patent Citations (5)
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CN1676674A (en) * | 2005-01-17 | 2005-10-05 | 上海大学 | Method for preparing nickel-phosphor alloy base composite cladding containing nano particle |
CN101008096A (en) * | 2006-12-29 | 2007-08-01 | 清华大学 | Method for electrodepositing Ni-W-P amorphous film on low carbon steel |
CN101967668A (en) * | 2009-12-16 | 2011-02-09 | 辽宁师范大学 | Method for preparing Ni-P-UFD composite coating by chemical plating or electroplating process |
CN104611754A (en) * | 2013-11-05 | 2015-05-13 | 无锡市雪江环境工程设备有限公司 | Nano WC composite plating Ni-Fe alloy plating solution and electroplating method |
CN104962977A (en) * | 2015-06-03 | 2015-10-07 | 昆明理工大学 | Preparation method of rod-shaped bimetallic-based composite anode material |
Non-Patent Citations (2)
Title |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105692700A (en) * | 2016-01-12 | 2016-06-22 | 江苏科技大学 | Preparation method and application of tungsten trioxide nanoparticles capable of stably suspending in plating solution with high ion concentration |
CN108149303A (en) * | 2016-12-06 | 2018-06-12 | 刘志红 | A kind of preparation process of Ni-P alloys base composite cladding |
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Application publication date: 20151216 |