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Preparation technique of chemically plated Ni-Zn-P anode composite structure plating

A composite structure and composite coating technology, which is applied to the electroless plating Ni-Zn-P anode composite structure coating. The preparation process involves the field of chemical plating, which can solve the problems of resource and energy waste, national economic loss, etc., and achieve low energy consumption and high process efficiency. Stable, realize the effect of automatic control and mass production

Inactive Publication Date: 2013-07-10
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problems existing in the above-mentioned prior art, the purpose of the invention is to research and design a kind of preparation technology of novel electroless plating Ni-Zn-P anode composite structure coating, thereby solve the huge problem that current metal corrosion brings to the national economy loss, resulting in a serious waste of resources and energy. The disadvantage of the current electroless Ni-P alloy coating is that the coating belongs to the cathode coating, and the electrode potential is significantly higher than the steel base material. If there are pores on the surface of the coating, it will make the Ni-P alloy Plating layer and substrate constitute primary battery

Method used

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  • Preparation technique of chemically plated Ni-Zn-P anode composite structure plating
  • Preparation technique of chemically plated Ni-Zn-P anode composite structure plating
  • Preparation technique of chemically plated Ni-Zn-P anode composite structure plating

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The bath configuration:

[0030] One-time plating: nickel sulfate 15g / L, sodium hypophosphite 15g / L, citric acid 10g / L, lactic acid 4mL / L, glycine 15g / L, temperature 70°C, pH value 4, time 1h;

[0031] Secondary plating: nickel sulfate 20g / L, sodium hypophosphite 20g / L, ethylenediamine 15g / L, ammonium citrate 60g / L, zinc sulfate 15g / L, thiourea 2g / L, temperature 80°C, pH Value 6, time 1h.

[0032] The performance of the composite structure coating: coating: thickness (μm): 20-100; binding force (N): 60-80; hardness (HV): 600-800; corrosion rate of the composite coating in 3% NaCl solution (mg / h): 0.010-0.O30, corrosion rate in 2M HCl solution (mg / h): 0.10-0.40 (V); potential difference 0.010-0.050.

Embodiment 2

[0034] The bath configuration:

[0035] One-time plating: nickel sulfate 25g / L, sodium hypophosphite 25g / L, malic acid 8g / L, citric acid 8g / L, lactic acid 4ml / L, glycine 25g / L, pH 5, temperature 85°C, time 1h;

[0036] Secondary plating: nickel sulfate 35g / L, sodium hypophosphite 35g / L, ethylenediamine 30g / L, PTFE20g / L, citric acid 12g / L, active agent (FC-134) 12g / L, thiourea 6g / L, pH value 7, temperature 90°C, time 2h.

[0037] The performance of the composite structure coating: coating: thickness (μm): 20-100; binding force (N): 60-80; hardness (HV): 600-800; corrosion rate of the composite coating in 3% NaCl solution (mg / h): 0.010-0.O30, corrosion rate in 2M HCl solution (mg / h): 0.10-0.40 (V); potential difference 0.010-0.050.

Embodiment 3

[0039] The bath configuration:

[0040] One-time plating: nickel sulfate 20g / L, sodium hypophosphite 20g / L, citric acid 15g / L, lactic acid 6ml / L, glycine 20g / L, pH 5, temperature 80°C, time 1h;

[0041] Secondary plating: nickel sulfate 30g / L, sodium hypophosphite 25g / L, ethylenediamine 30g / L, ammonium citrate 80g / L, zinc sulfate 30g / L, thiourea 4g / L, temperature 85°C, PH Value 7, time 2h.

[0042]The performance of the composite structure coating: coating: thickness (μm): 20-100; binding force (N): 60-80; hardness (HV): 600-800; corrosion rate of the composite coating in 3% NaCl solution (mg / h): 0.010-0.O30, corrosion rate in 2M HCl solution (mg / h): 0.10-0.40 (V); potential difference 0.010-0.050.

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Abstract

The invention relates to a preparation technique of a chemically plated Ni-Zn-P anode composite structure plating. The technique is based on the chemically plated Ni-P alloy technology, and carries out secondary plating on the No.45 steel matrix to obtain the Ni-Zn-P anode composite structure plating; and the composite plating is orderly composed of a low potential layer and a high potential layer from the surface to the matrix. The technique comprises the following concrete steps: 1. selecting the raw material of a plating solution; 2. removing oil and rust; 3. ultrasonic cleaning; 4. activating by using hydrochloric acid; 5. primary plating; 6. rinsing; 7. secondary plating; 8. rinsing; and 9. detecting the properties of the sample. The invention can be used for preparing the Ni-Zn-P anode composite structure plating with favorable corrosion resisting property by chemical plating, and the Ni-Zn-P anode composite structure plating is orderly composed of a low potential layer and a high potential layer from the surface to the matrix. The Ni-Zn-P anode composite structure plating has the characteristics of high hardness, strong binding force and favorable corrosion resistance; and the plating is an anodic plating.

Description

technical field [0001] The preparation process of the electroless Ni-Zn-P anode composite structure coating of the present invention relates to electroless plating, in particular to an electroless Ni-Zn-P anode composite structure coating and a preparation process. Background technique [0002] At present, metal corrosion has brought huge losses to the national economy, exceeding the sum of losses caused by floods, fires, earthquakes and hurricanes. After the metal is corroded, it will change in appearance, color and mechanical properties, causing equipment damage, pipeline leakage, product pollution, causing vicious accidents such as combustion or explosion, and serious waste of resources and energy, which will cause huge damage to the national economy. Loss. It is estimated that the annual economic losses caused by metal corrosion in developed countries in the world account for about 3.5%-4.2% of their gross national product. Some people even estimate that about 100 mill...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36C23C18/50
Inventor 付传起王宙
Owner DALIAN UNIV