Method for modulating zinc-nickel alloy and nickel combined multi-layer membranous by electrochemical deposition component

A component modulation, zinc-nickel alloy technology, applied in the field of electrochemical deposition component modulation Zn-Ni/Ni or Ni/Zn-Ni multilayer film, can solve the problems of high cost, long preparation time, high equipment requirements, etc. Achieve smooth and bright coating, high current efficiency, and solve the effect of poor bonding force

Inactive Publication Date: 2009-07-22
BEIHANG UNIV
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Problems solved by technology

Vapor deposition method has high requirements on equipment, long preparation t

Method used

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  • Method for modulating zinc-nickel alloy and nickel combined multi-layer membranous by electrochemical deposition component
  • Method for modulating zinc-nickel alloy and nickel combined multi-layer membranous by electrochemical deposition component
  • Method for modulating zinc-nickel alloy and nickel combined multi-layer membranous by electrochemical deposition component

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preparation example Construction

[0031] The multi-layer film preparation method of zinc-nickel alloy and nickel combination provided by the invention, the preparation process is as follows figure 1 As shown, the specific implementation steps are as follows:

[0032] The first step is to prepare alkaline cleaning solution, pickling solution and electroplating solution.

[0033] Alkaline lotion contains NaOH, Na 3 PO 4 12H 2 O, Na 2 CO 3 10H 2 O, Na 2 SiO 3 ·nH 2 Aqueous solution of O, which contains 60-80g of NaOH per liter of alkaline washing solution, NaOH 3 PO 4 12H 2 O 20~40g, Na 2 CO 3 10H 2 O20~40g, Na 2 SiO 3 ·nH2 O 20~40g, the rest is water.

[0034] The pickling solution adopts HCl solution, and each liter of the pickling solution contains 4-8 mL of HCl.

[0035] Alkaline Zn-Ni alloy electroplating solution contains ZnO, NiSO 4 , NaOH, complexing agent, additive and brightener aqueous solution, each liter of bath contains ZnO 10 ~ 30g, NiSO 4 5~13g, NaOH 100~140g, in addition, it ...

Embodiment 1

[0061] Example 1: Zn-Ni / Ni and Ni / Zn-Ni multilayer films were electroplated on 30CrMnSiA steel substrate.

[0062] The first step is to prepare alkaline washing solution, acid washing solution and electroplating solution.

[0063] Each liter of alkaline washing solution contains: NaOH 70g, Na 3 PO 4 ·12H 2 O 30g, Na 2 CO 3 ·10H 2 O 30g, Na 2 SiO 3 ·nH 2 O 30g. The rest is water.

[0064] Each liter of acid wash contains 6 mL of HCl.

[0065] Each liter of alkaline zinc-nickel alloy plating solution contains: ZnO 10g, NiSO 4 5g, NaOH 120g, complexing agent tetraethylene pentamine 3mL, triethanolamine 38mL, ammonia water 10mL, additive DE 1.5mL, CTAB 2g, brightener ZB 3mL, vanillin 0.2g, and the rest are water.

[0066] The plating solution for electroplating nickel contains per liter: nickel sulfate 150g, sodium citrate 200g, nickel chloride 10g, triethanolamine 20ml, magnesium sulfate 40g, and the rest is water.

[0067] The second step is mechanical grinding a...

Embodiment 2

[0087] Embodiment 2: Electrolyzed Ni / Zn-Ni multilayer films on stainless steel substrates.

[0088] The first step is to prepare alkaline washing solution, acid washing solution and electroplating solution.

[0089] The preparations of the alkaline washing solution and the acid washing solution are the same as those in the first embodiment.

[0090] The electroplating solution of zinc-nickel alloy is ZnO, NiSO 4 , NaOH, ammonium citrate, tetraethylene pentamine, triethanolamine, EDTA, phytic acid, DE, thiourea, and each liter of alkaline zinc-nickel alloy electroplating solution contains: ZnO 20g, NiSO 4 10g, NaOH 100g, complexing agent ammonium citrate 15g, tetraethylene pentamine 20mL, triethanolamine 40mL, EDTA 15g, additive phytic acid 0.15mL, DE 9mL, brightener thiourea 1g, the rest is water.

[0091] Each liter of electroplating nickel bath contains: nickel sulfate 100g, potassium pyrophosphate 75g, citric acid 15g, ammonia water 50mL, and the rest is water.

[009...

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Abstract

The invention provides a method for modulating a multilayer film consisting of Zn-Ni alloy and Ni by electro-chemically depositing compositions, comprising five steps as follows: preparing alkaline liquor, pickling liquor and electroplating solution, mechanical grinding and cleaning plating articles, alkaline washing, pickling and electroplating, wherein, the electroplating solution comprises alkaline electroplating solution with electroplated Zn-Ni alloy and neutral and alkaline electroplating solution with electroplated Ni; the electroplating solution of Ni consists essentially of a main salt and a complexing agent; the main salt is one or two compositions out of NiSO4 and NiCl2; and the complexing agent consists of two or more substances as follows: ammonium citrate, sodium citrate, citric acid, ammonia, sodium pyrophosphate, potassium pyrophosphate and triethanolamine. The Zn-Ni/Ni or Ni/Zn-Ni multilayer film electroplated by the method has smooth plating layer surface, better corrosion resistance and higher current efficiency and plating layer adhesion.

Description

technical field [0001] The invention belongs to the technical field of electroplating in material science, and specifically refers to a method for modulating Zn-Ni / Ni or Ni / Zn-Ni multilayer films by electrochemical deposition components. Background technique [0002] Composition modulation multilayer film is a kind of multilayer structure material, which is a new type of material with periodic changes in composition or structure formed by the alternate superposition of two metal or alloy thin film materials. In a multilayer film, a single thin layer is called a sublayer or a sublayer, and the sum of the thicknesses of two adjacent thin layers is called the modulation wavelength or period thickness (expressed by λ). Since the 1970s, there have been more and more research reports on the preparation and performance of component-modulated multilayer films, but it was not until the mid-1990s that scientists represented by Gabe began to study the preparation of components by elect...

Claims

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Application Information

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IPC IPC(8): C25D5/12C25D3/12C25D3/56
Inventor 刘建华陈珏伶柳木桐李松梅于美
Owner BEIHANG UNIV
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