Electrocoppering method for TC2 titanium alloy

A titanium alloy and copper electroplating technology, applied in the field of TC2 titanium alloy copper electroplating, can solve the problems of inactivity, peeling and cracking of the film layer, and achieve the effects of improving comprehensive performance, improving electrical conductivity and preventing contact corrosion.

Inactive Publication Date: 2014-08-27
SHENYANG AIRCRAFT CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, as long as the surface of titanium alloy is exposed to air and aqueous solution, an oxide film will be formed immediately. This film is inactive and cannot be electroplated on the surface, and the oxide film will be regenerated immediately when the treated titanium alloy surface is exposed to air or water. , even if the copper layer is plated on its surface, its bonding force with the plating layer is not strong, and peeling, bubbling, cracking, scorching, black spots, roughness, burrs, dendrites, stripes or Spongy and other defects

Method used

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  • Electrocoppering method for TC2 titanium alloy
  • Electrocoppering method for TC2 titanium alloy

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Experimental program
Comparison scheme
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Embodiment 1

[0025] Embodiment 1 A kind of method of TC2 titanium alloy electroplating copper

[0026] (1) including the following steps:

[0027] 1) Use corundum sand with a particle size not greater than 60 mesh to perform sandblasting on TC2 titanium alloy, and the sandblasting pressure is 0.4MPa;

[0028] 2) Activate the TC2 titanium alloy after sandblasting in the following acidic solution and conditions, so that the surface of the TC2 titanium alloy is removed to a thickness of 4-5 μm, and the solution is prepared before each use.

[0029]

[0030] 3) Place the activated TC2 titanium alloy in a mixed solution of sulfuric acid and hydrochloric acid at a temperature of 18-25°C for 30min to 60min for hydrogenation treatment. The solution is prepared before each use. The mixed solution of sulfuric acid and hydrochloric acid is specifically:

[0031] Sulfuric acid ρ=1.84g / ml500g / L,

[0032] Hydrochloric acid ρ=1.19g / ml210g / L,

[0033] water balance.

[0034] 4) Copper plating is pe...

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Abstract

The invention discloses an electrocoppering method for TC2 titanium alloy. The method comprises the following steps of (1), selecting Emery with the particle size not larger than 60 meshes for performing abrasive blasting on the TC2 titanium alloy, wherein the abrasive blasting pressure ranges from 0.3 MPa to 0.5 MPa; (2), performing activating treatment on the TC2 titanium alloy in acid solutions after abrasive blasting, and reducing the thickness of the surface of the TC2 titanium alloy by two micrometers to seven micrometers; (3), placing the activated TC2 titanium alloy in the sulfuric acid and hydrochloric acid mixed solutions with the temperature of 18 DEG C to 25 DEG C for 30 min to 60 min for hydrotreating; (4), performing copper plating on the hydrogenated TC2 titanium alloy. According to the method, the binding force of the surface of the TC2 titanium alloy and a plating layer of the TC2 titanium alloy is ensured and improved, the electrical conductivity of the TC2 titanium alloy materials is improved, contact corrosion is prevented from happening to the TC2 titanium alloy materials and cadmium metal, and then the comprehensive performance of the TC2 titanium alloy materials is improved.

Description

technical field [0001] The invention relates to a method for electroplating copper on the surface of a titanium alloy, in particular to a method for electroplating copper on a TC2 titanium alloy. Background technique [0002] Titanium alloy has many excellent properties and has been used in aviation, aerospace, navigation and chemical equipment. It is often used in aviation products due to its light specific gravity and excellent corrosion resistance. The weight of various titanium alloy parts on the Su-27 aircraft is Accounting for about 15% of the weight of the aircraft structure, the amount of titanium alloy used on the third-generation fighter F-14 and the fourth-generation fighter F-22 of the United States has reached 24% and 41% of the total weight of the aircraft structure, and titanium alloys in newly developed aircraft The proportion of alloy use is still on the rise. Although titanium alloy has many advantages, it has disadvantages such as high cost, low rigidity,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/38
Inventor 于海王志煜沙春鹏轩立卓
Owner SHENYANG AIRCRAFT CORP
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