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Copper alloy surface Ni-P-nanometer TiO2 composite plating liquid preparation and plating process

A preparation process, copper alloy technology, applied in the direction of metal material coating process, liquid chemical plating, coating, etc., can solve problems such as difficult to meet the requirements of complex sea conditions, poor surface treatment performance of propellers, etc., to achieve improved plating performance, lower lifetime cost, and reduced agglomeration

Inactive Publication Date: 2020-01-07
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the surface treatment performance of the existing propeller is not good, and it is difficult to meet the use requirements of complex sea conditions, and to invent a "ball milling nano-TiO 2 - Add the plating solution formula solution - stir "Ni-P nano-TiO 2 The preparation process of the composite plating solution to obtain a Ni-P-nano TiO with uniform coating and strong combination of coating and copper alloy matrix 2 Composite plating solution and plating process

Method used

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  • Copper alloy surface Ni-P-nanometer TiO2 composite plating liquid preparation and plating process
  • Copper alloy surface Ni-P-nanometer TiO2 composite plating liquid preparation and plating process
  • Copper alloy surface Ni-P-nanometer TiO2 composite plating liquid preparation and plating process

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Take high manganese aluminum bronze as an example:

[0037] A copper alloy surface plating process, including pretreatment and composite plating: pretreatment is to use sandpaper to grind and polish the surface of high manganese aluminum bronze, the surface roughness after grinding and polishing should be less than 6.3μm Ultrasonic cleaning for 30 minutes in a neutral solution; then pickling in 15% hydrochloric acid, take out immediately after a small amount of air bubbles appear on the surface, rinse with deionized water, dry, and complete the pretreatment; then the pretreated high manganese aluminum The bronze is placed in 5% hydrochloric acid for weak acid activation for about 30-60s. After taking it out, rinse it with deionized water and dry it. Then put the copper alloy into the following plating solution for plating:

[0038] Nickel Sulfate (NiSO 4 ·6H 2 O) 30g / L

[0039] Sodium hypophosphite (NaH 2 PO 2 ·H 2 O) 22g / L

[0040] Anhydrous sodium acetate (CH ...

Embodiment 2

[0052] Take Nickel Aluminum Bronze as an example:

[0053] A copper alloy surface plating method, which includes pretreatment and plating, the pretreatment includes grinding with sandpaper and polishing, the surface roughness of the treated nickel-aluminum bronze should be less than 6.3 microns, and then the polished Nickel-aluminum bronze was ultrasonically cleaned in an alkaline solution for 30 minutes; then pickled in 15% hydrochloric acid, and immediately removed after a small amount of air bubbles appeared on the surface, rinsed with deionized water, and dried; then placed in 5% hydrochloric acid Activate with weak acid for about 30-60s, take it out, rinse it with deionized water, dry it, and complete the pretreatment. Then put the copper alloy into the following plating solution for plating:

[0054] Nickel Sulfate (NiSO 4 ·6H 2 O) 30g / L

[0055] Sodium hypophosphite (NaH 2 PO 2 ·H 2 O) 30g / L

[0056] Anhydrous sodium acetate (CH 3 COONa) 8g / L

[0057] Citric a...

Embodiment 3

[0066] The difference between this embodiment and embodiment one is that the formulation of the plating solution is different, and the composition of the plating solution of the present embodiment is:

[0067] Nickel Sulfate (NiSO 4 ·6H 2 O) 26g / L

[0068] Sodium hypophosphite (NaH 2 PO 2 ·H 2 O) 38g / L

[0069] Anhydrous sodium acetate (CH 3 COONa) 12g / L

[0070] Citric acid (C 6 h 8 o 7 ·H 2 O) 10g / L

[0071] Lactic acid (C 3 h 6 o 3 ) 30mL / L

[0072] Nano-TiO 2 6g / L

[0073] Sodium Lauryl Sulfate 40mg / L

[0074] The balance is deionized water.

[0075] Its preparation method and plating method are the same as in Example 1. The plating effect is similar to that of Example 1.

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Abstract

The invention discloses a formula of Ni-P-nanometer TiO2 composite plating liquid for copper alloy surfaces and a plating process. The formula comprises 26-34 g / L of nickel sulfate, 22-38 g / L of sodium hypophosphite, 8-16 g / L of anhydrous sodium acetate, 10-20 g / L of citric acid, 20-30 mL / L of lactic acid, 4-8 g / L of nanometer TiO2 after ball milling dispersion, and 40-60 mg / L of surface active agent lauryl sodium sulfate. The plating process of composite plating layers comprises the following steps: copper alloys are polished for ultrasonic alkali washing, acid washing and weak acid activation, and then, are positioned in composite plating solution to control the H value and the temperature for plating; and nanometer TiO2 and Ni-P are co-deposited on the surfaces of copper alloy basal bodies to form amorphous composite plating layers. The plating layers have the advantages of smooth surfaces, uniform distribution of TiO2, high hardness, good wear resistance and high bonding strength with the basal bodies.

Description

technical field [0001] The invention relates to Ni-P-nano TiO on the surface of copper alloy 2 The preparation process of composite coating, specifically a kind of Ni-P-nano TiO used on the surface of copper alloy (nickel-aluminum bronze, high-manganese aluminum bronze, etc.) 2 The invention relates to a plating solution formula and a plating method, belonging to the field of copper alloy surface strengthening technology. Background technique [0002] The main propulsion method of ships is to drive propellers by turbines or diesel engines. Therefore, propellers, as the main propulsion equipment of ships, have always attracted people's attention. Due to its excellent mechanical properties and corrosion resistance, copper alloy plays a major role in propeller materials, so it has been widely used in marine ships, and in terms of material classification, countries are becoming more and more unified. In addition, copper alloy also has good welding performance and casting perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/34C23C18/18
CPCC22C19/03C23C18/1662C23C18/1806C23C18/1837C23C18/34
Inventor 许晓静刘庆军张兵陈浩张旭刘阳光肖易水蒋泽毛强张天赐
Owner JIANGSU UNIV
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