CN104005065A - Electrocoppering method for TC2 titanium alloy - Google Patents
Electrocoppering method for TC2 titanium alloy Download PDFInfo
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- CN104005065A CN104005065A CN201410258180.3A CN201410258180A CN104005065A CN 104005065 A CN104005065 A CN 104005065A CN 201410258180 A CN201410258180 A CN 201410258180A CN 104005065 A CN104005065 A CN 104005065A
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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
The present invention relates to a kind of method in titanium alloy surface electro-coppering, be specifically related to the method for a kind of TC2 titanium alloy electro-coppering.
Background technology
Titanium alloy has many good performances, be applied in Aeronautics and Astronautics, navigation and chemical industry equipment, often with in the advantage application aeronautical product such as light specific gravity, erosion resistance be good, on Soviet Union's-27 aircrafts, the weight of various titanium alloy components accounts for 15% of aircraft structure weight, titanium alloy consumption on U.S. third generation air fighter F-14, fourth generation fighter F-22 has reached 24% and 41% of aircraft structure gross weight, and the usage ratio of titanium alloy is still in rising trend in newly grinding aircraft.Although titanium alloy has plurality of advantages, because it exists that cost is high, rigidity is low, wears no resistance, the heat conduction of, surface film responsive to hot salt corrosion and electroconductibility is low, welding difficulty, easily come in contact the shortcomings such as corrosion with the metal such as cadmium and make it be subject to certain restriction on applying.Copper is the rich malleable metal of rose, and copper coating is light red or rose, and coating is even, careful, has stable prevent carburizing, nitriding ability and good conductive ability.In titanium alloy surface electro-coppering, not only retained the premium properties of titanium alloy self, can improve again the electroconductibility of titanium alloy material, can prevent that again itself and cadmium metal from coming in contact corrosion, and then improve its over-all properties.As long as but titanium alloy surface is exposed to air and the aqueous solution will form oxide film immediately; this rete torpescence; cannot carry out again electroplating surface; and treated complete titanium alloy surface can regenerate oxide film again while being exposed in air or water immediately; even at its surperficial plated with copper layer; the bonding force of itself and coating layer is also insecure, on its surface, often there will be peel off, bubbling, break, burn, stain, coarse, burr, dendroid, striated or the defect such as spongy.Therefore in the technique of titanium alloy surface electro-coppering, how guaranteeing and improve the bonding force of titanium alloy surface and coating layer, is the technical barrier that those skilled in the art need solution badly.
Summary of the invention
The defect and the deficiency that in order to solve prior art, exist, the invention provides the method for a kind of TC2 titanium alloy electro-coppering, the method guarantees and improves the bonding force of TC2 titanium alloy surface and coating layer, avoid electroplating that peeling off appears in rear TC2 titanium alloy surface, bubbling, break, burn, stain, coarse, burr, dendroid, striated or the defect such as spongy, improve the conductivity of TC2 titanium alloy material and prevent it with cadmium metal comes in contact corrosion, and then the over-all properties of raising TC2 titanium alloy material.
The technical solution used in the present invention is:
A method for TC2 titanium alloy electro-coppering, comprises the steps:
1) select particle size to be not more than 60 object emergies TC2 titanium alloy is carried out to sandblasting, blasting pressure is 0.3MPa～0.5MPa;
2) the TC2 titanium alloy after sandblast is carried out to activation treatment under following acidic solution and condition, make TC2 titanium alloy surface remove thickness 2 μ m～7 μ m;
Acidic solution consists of: hydrochloric acid (ρ=1.19g/ml) 40ml/l～50ml/l, and hydrofluoric acid 25ml/l～30ml/l that volume percent is 40%, surplus is water;
Activation condition is: 18 ℃～25 ℃ of temperature, time 30s～45s.
3) by the TC2 titanium alloy after activation, in temperature, be in the sulfuric acid of 18-25 ℃ and hydrochloric acid mixed solution, to place 30min～60min to carry out hydrogen treatment, the mixing solutions of sulfuric acid and hydrochloric acid is specially:
Sulfuric acid ρ=1.84g/ml 430g/L～570g/L,
Hydrochloric acid ρ=1.19g/ml 195g/L～225g/L,
Water surplus.
4) the TC2 titanium alloy after hydrogenation is carried out to copper facing under following solution and condition,
Solution composition is as follows:
Condition: temperature 50 C-60 ℃, current density 1A/dm
2-2A/dm
2, sedimentation velocity is 0.3 μ m/min-1 μ m/min.Electroplating time is 10min～60min.
Conventionally, in order to improve anti-crevice corrosion, the preferred 15min～40min of electroplating time; In order to improve electroconductibility, the preferred 10min～60min of electroplating time.
5) copper-plated TC2 titanium alloy is carried out to Passivation Treatment: at room temperature, standing 1min～2min in passivating dip; Described passivating dip consists of: chromic trioxide 100g～200g/L, and sulfuric acid 2g/L～4g/L, surplus is water.
6) the TC2 titanium alloy after passivation is heat-treated, heat treated temperature is 200 ℃～220 ℃, and the time is 55min～65min.
The method of a kind of TC2 titanium alloy of the present invention electro-coppering has following beneficial effect:
By the inventive method, TC2 titanium alloy is carried out to electro-coppering, make TC2 titanium alloy not only retain the premium properties of self, improved again the electroconductibility of TC2 titanium alloy material, and prevented that TC2 titanium alloy and cadmium metal from coming in contact corrosion, further improves the over-all properties of TC2 titanium alloy.
The inventive method is carried out electro-coppering to TC2 titanium alloy after by sandblast, activation and hydrogen treatment, and the object of its sandblast is in order to remove the vestige of mechanical workout, alligatoring workpiece surface, thus improve hydrotreated effect.Activation is in order further to improve hydrotreated effect.Hydrogen treatment is in order to improve the bonding force of copper coating, under the plating solution providing by the inventive method and condition, TC2 titanium alloy to be carried out to electro-coppering, makes copper coating and TC2 titanium alloy substrate have good conjugation.
By the passivation in the inventive method, copper coating is for further processing, effectively prevent copper coating variable color, and further improve the stability of copper coating, and the copper coating after passivation is being heat-treated, can increase substantially again the bonding force of coating and TC2 titanium alloy substrate.
By aforesaid method, TC2 titanium alloy is carried out to electro-coppering, its coating crystallization is even, careful, without peeling off, bubbling and break, burn, stain, coarse, burr, dendroid, striated or spongy defect, firm with TC2 titanium alloy substrate melts combine, the bonding force of copper coating and porosity all meet the index request of HB/Z5069, can effectively play the effect that prevents crevice corrosion, resistivity is being within the scope of 1.6 μ Ω ㎝～1.7 μ Ω cm.
Embodiment
The method of 1 one kinds of TC2 titanium alloys of embodiment electro-coppering
(1) comprise the steps:
1) select particle size to be not more than 60 object emergies TC2 titanium alloy is carried out to sandblasting, blasting pressure is 0.4MPa;
2) the TC2 titanium alloy after sandblast is carried out to activation treatment under following acidic solution and condition, make TC2 titanium alloy surface remove thickness 4-5 μ m, preparation before the each use of solution,
3) by the TC2 titanium alloy after activation, in temperature, be in the sulfuric acid of 18-25 ℃ and hydrochloric acid mixed solution, to place 30min～60min to carry out hydrogen treatment, solution is each use before preparation, the mixing solutions of sulfuric acid and hydrochloric acid is specially:
Sulfuric acid ρ=1.84g/ml 500g/L,
Hydrochloric acid ρ=1.19g/ml 210g/L,
Water surplus.
4) the TC2 titanium alloy after hydrogenation is carried out to copper facing under following solution and condition,
5) copper-plated TC2 titanium alloy is carried out to Passivation Treatment: at room temperature, standing 1min～2min in passivating dip; Passivating dip consists of: chromic trioxide 150g/L, and sulfuric acid 3g/L, surplus is water.
6) the TC2 titanium alloy after passivation is heat-treated, heat treated temperature is 200 ℃～220 ℃, and the time is 55min～65min.
(2) result
According to aforesaid method, TC2 titanium alloy is carried out to electro-coppering, not only solve TC2 titanium alloy and in empty G&W, generated the difficult problem that oxide film is difficult for plating, increase substantially the bonding force of TC2 titanium alloy and copper coating, make copper coating effectively exercise its function, and copper coating crystallization is even, careful, without peeling off, bubbling and breaking, burn, stain, coarse, burr, dendroid, striated or spongy defect, firm with TC2 titanium alloy substrate melts combine, the bonding force of copper coating and porosity all meet the index request of HB/Z5069, can effectively play the effect that prevents crevice corrosion, resistivity is being within the scope of 1.6 μ Ω ㎝～1.7 μ Ω cm.
Claims (8)
1. a method for TC2 titanium alloy electro-coppering, is characterized in that comprising the steps:
1) select particle size to be not more than 60 object emergies TC2 titanium alloy is carried out to sandblasting, blasting pressure is 0.3MPa～0.5MPa;
2) the TC2 titanium alloy after sandblast is carried out to activation treatment in acidic solution;
3) by the TC2 titanium alloy after activation, in temperature, be in the sulfuric acid of 18-25 ℃ and hydrochloric acid mixed solution, to place 30min～60min to carry out hydrogen treatment;
4) the TC2 titanium alloy after hydrogenation is carried out to copper facing.
2. method according to claim 1, is characterized in that, also comprises step 5) copper-plated TC2 titanium alloy is carried out to Passivation Treatment: at room temperature, standing 1min～2min in passivating dip; Described passivating dip consists of: chromic trioxide 100g～200g/L, and sulfuric acid 2g/L～4g/L, surplus is water.
3. method according to claim 2, is characterized in that, also comprises step 6) the TC2 titanium alloy after passivation to be heat-treated, heat treated temperature is 200 ℃～220 ℃, the time is 55min～65min.
4. according to the method described in claim 1,2 or 3, it is characterized in that step 2) in, described acidic solution consists of: hydrochloric acid 40ml/l～50ml/l of ρ=1.19g/ml, and hydrofluoric acid 25ml/l～30ml/l that volume percent is 40%, surplus is water; Described activation condition is: 18 ℃～25 ℃ of temperature, time 30s～45s.
5. according to the method described in claim 1,2 or 3, it is characterized in that step 3) in the mixing solutions of sulfuric acid and hydrochloric acid be specially: sulfuric acid 430g/L～570g/L of ρ=1.84g/ml, hydrochloric acid 195g/L～225g/L of ρ=1.19g/ml, surplus is water.
6. according to the method described in claim 1,2 or 3, it is characterized in that step 4) be specially and under following solution and condition, carry out copper facing:
Solution composition is as follows:
Condition: temperature 50 C-60 ℃, current density 1A/dm
2-2A/dm
2, sedimentation velocity is 0.3 μ m/min-1 μ m/min.
7. method according to claim 6, is characterized in that, electroplating time is 10min～60min.
8. method according to claim 7, is characterized in that, electroplating time is 15min～40min.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313667A (en) * | 2014-10-17 | 2015-01-28 | 长安大学 | Method for preparing ZrO2/Cu composite plated layer on surface of TC4 titanium alloy |
| CN106011807A (en) * | 2016-07-18 | 2016-10-12 | 宝鸡石油钢管有限责任公司 | Method of treating thread surface of titanium alloy oil pipe |
| CN106087000A (en) * | 2016-08-25 | 2016-11-09 | 四川省雅安市航仪电器科技开发有限公司 | A kind of method at metal surface plating tetrafluoro |
| CN111005045A (en) * | 2019-12-31 | 2020-04-14 | 西安西工大超晶科技发展有限责任公司 | Preparation method of titanium and titanium alloy surface coating |
| CN113249730A (en) * | 2021-04-28 | 2021-08-13 | 南京航空航天大学 | Titanium alloy wire copper modification method and application |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313667A (en) * | 2014-10-17 | 2015-01-28 | 长安大学 | Method for preparing ZrO2/Cu composite plated layer on surface of TC4 titanium alloy |
| CN104313667B (en) * | 2014-10-17 | 2017-03-29 | 长安大学 | TC4 titanium alloy surfaces prepare ZrO2The method of/Cu composite deposites |
| CN106011807A (en) * | 2016-07-18 | 2016-10-12 | 宝鸡石油钢管有限责任公司 | Method of treating thread surface of titanium alloy oil pipe |
| CN106011807B (en) * | 2016-07-18 | 2018-04-03 | 宝鸡石油钢管有限责任公司 | A kind of titanium alloy tubing round thread surface treatment method |
| CN106087000A (en) * | 2016-08-25 | 2016-11-09 | 四川省雅安市航仪电器科技开发有限公司 | A kind of method at metal surface plating tetrafluoro |
| CN111005045A (en) * | 2019-12-31 | 2020-04-14 | 西安西工大超晶科技发展有限责任公司 | Preparation method of titanium and titanium alloy surface coating |
| CN113249730A (en) * | 2021-04-28 | 2021-08-13 | 南京航空航天大学 | Titanium alloy wire copper modification method and application |
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