A kind of tc4 titanium alloy surface electroplating copper process method

A process method, a technology of electroplating copper, which is applied in the field of surface modification of metal materials, can solve the problems of poor bonding between the non-toxic copper plating layer and the substrate, and achieve the effect of good bonding, high efficiency, and easy realization

Inactive Publication Date: 2011-12-21
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the prior art that non-toxic copper plating cannot be achieved and the bonding force between the coating and the substrate is poor, the present invention provides a process for electroplating copper on the surface of TC4 titanium alloy, which can be directly plated on the surface of TC4 titanium alloy without pre-plating treatment. Copper can obtain a coating with good bonding force, uniformity, density, and smooth surface, and has the advantages of simple process, convenient operation, low cost, easy realization, and high efficiency. It is suitable for production and application

Method used

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  • A kind of tc4 titanium alloy surface electroplating copper process method
  • A kind of tc4 titanium alloy surface electroplating copper process method
  • A kind of tc4 titanium alloy surface electroplating copper process method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Copper plating on the surface of the TC4 titanium alloy sample with a specification of 25×20×5mm

[0031] Solution formula: ① Alkali washing solution: NaOH 75g / L; NaOH 3 PO 4 20g / L②Pickling solution: HF 100ml / L; HNO 3 300ml / L; distilled water 600ml / L③Activation solution: K 2 Cr 2 o 7 180g / L; HF 50ml / L④ Plating solution: CuSO 4 ·5H 2 O 150g / L; H 2 SO 4 60ml / L ⑤ Passivation solution: CrO 3 80g / L; NaCl 1.0g / L; H 2 SO 4 25ml / L.

[0032] Operation: ①Alkali washing: put the sample in the alkali washing solution with a temperature of 65°C and soak for 15 minutes; ②Water washing: rinse the sample after alkali washing with flowing water; ③Pickling: wash the sample Soak in pickling solution at room temperature for 2 minutes to carry out surface corrosion treatment; ④ Washing: Rinse the sample after pickling with running water; Soak in the solution for 25 minutes to perform surface activation treatment; ⑥Washing: Rinse the activated sample with running water; ⑦E...

Embodiment 2

[0035] Copper plating on the surface of the TC4 titanium alloy sample with a specification of 25×20×5mm

[0036] Solution formula: ① Alkali washing solution: NaOH 85g / L; NaOH 3 PO 4 22.5g / L② Pickling solution: HF 150ml / L; HNO 3 350ml / L; distilled water 500ml / L③Activation solution: K 2 Cr 2 o7 210g / L; HF 65ml / L④ Plating solution: CuSO 4 ·5H 2 O 180g / L; H 2 SO 4 70ml / L ⑤ Passivation solution: CrO 3 85g / L; NaCl 1.5g / L; H 2 SO 4 27.5ml / L.

[0037] Operation: ①Alkali washing: put the sample in the alkaline washing solution with a temperature of 70°C and soak for 12 minutes; ②Water washing: rinse the sample after alkali washing with running water; ③Pickling: wash the sample Soak in pickling solution at room temperature for 1.5 minutes to carry out surface corrosion treatment; ④ Washing: Rinse the sample after pickling with running water; Soak in the solution for 22 minutes to carry out surface activation treatment; ⑥Washing: Rinse the activated sample with running w...

Embodiment 3

[0040] Copper plating on the surface of the TC4 titanium alloy sample with a specification of 25×20×5mm

[0041] Solution formula: ① Alkali washing solution: NaOH 100g / L; NaOH 3 PO 4 25g / L② Pickling solution: HF 200ml / L; HNO 3 400ml / L; distilled water 400ml / L③Activation solution: K 2 Cr 2 o 7 250g / L; HF 80ml / L④ Plating solution: CuSO 4 ·5H 2 O 200g / L; H 2 SO 4 80ml / L ⑤ Passivation solution: CrO 3 90g / L; NaCl 2.0g / L; H 2 SO 4 30ml / L.

[0042] Operation: ①Alkali washing: put the sample in the alkali washing solution with a temperature of 80°C, soak for 10 minutes; ②Water washing: rinse the sample after alkali washing with running water; ③Pickling: wash the sample Soak in pickling solution at room temperature for 1 minute to carry out surface corrosion treatment; ④ Washing: Rinse the sample after pickling with running water; Soak in the solution for 20 minutes for surface activation treatment; ⑥Washing: Rinse the activated sample with running water; ⑦Electropla...

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Abstract

The invention discloses a copper electroplating process on the surface of a TC4 titanium alloy. The sample or workpiece is sequentially subjected to alkali washing, degreasing and degreasing, water washing, pickling corrosion, water washing, activation treatment, water washing, electroplating, cleaning, surface passivation, Wash and tumble dry. The invention solves the technical problem that copper plating on the surface of TC4 titanium alloy is difficult to achieve, without pre-plating treatment, the surface of TC4 titanium alloy is directly electroplated with copper at room temperature, the process is stable and reliable, and can obtain good bonding force, uniformity, compactness and smooth surface Copper plating, and has the advantages of simple process, convenient operation, high efficiency, low cost, and easy realization. The bonding force was detected by methods such as file edge method, scratch method, friction method and polishing method, and the coating and the substrate showed very good bonding force.

Description

technical field [0001] The invention relates to a copper electroplating process on the surface of a TC4 titanium alloy, which belongs to the technical field of surface modification of metal materials. Background technique [0002] Copper has the characteristics of high melting point and good plasticity. It can greatly reduce the friction coefficient and friction force when applied on the surface of metal materials, and has a good effect on improving the friction and wear performance of the surface of metal materials. Sticking effect. At present, most of the threads of oil pipes are copper-plated to improve their wear resistance and anti-sticking performance. Titanium alloy is a good material for high-strength corrosion-resistant oil pipe, but titanium alloy material has high viscosity, poor wear resistance, and the thread is prone to sticking. Since the copper plating technology on the surface of titanium alloy is difficult to achieve, it has become the first choice for tita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/38C25D5/28
Inventor 姚小飞谢发勤吴向清王毅飞
Owner NORTHWESTERN POLYTECHNICAL UNIV
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