CN103849914A - Method for plating copper on titanium alloy coupling - Google Patents
Method for plating copper on titanium alloy coupling Download PDFInfo
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- CN103849914A CN103849914A CN201410115242.5A CN201410115242A CN103849914A CN 103849914 A CN103849914 A CN 103849914A CN 201410115242 A CN201410115242 A CN 201410115242A CN 103849914 A CN103849914 A CN 103849914A
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Abstract
The invention discloses a method for plating copper on a titanium alloy coupling. The method comprises the following steps: 1, chemically removing oil, namely, removing oil of the coupling in a chemical oil removing solution; 2, water-washing, namely, removing an oil removing solution on the surface of a workpiece; 3, acid-washing, namely, immediately acid-washing the treated coupling in an acid-washing solution; 4, activating, namely, immediately activating the acid-washed coupling in an activating solution; 5, chemically preplating nickel, namely, chemically preplating nickel on the activated coupling in a chemical nickel plating solution; 6, water-washing, namely, soaking the nickel preplated coupling in warm water, removing the chemical nickel plating solution on the surface of the workpiece; 7, chemically plating copper, chemically plating copper of the treated coupling in a chemical copper plating solution; 8, water-washing and drying, namely, removing the chemical copper plating solution on the surface of the workpiece, and then drying; and 9, stabilizing, namely, treating the treated coupling in a furnace, cooling to a room temperature after taking out. According to the method, the technical difficult of plating copper on the surface of the titanium alloy coupling is solved, and the process is stable and reliable.
Description
Technical field
The invention belongs to metal surface properties modification technical field, be specifically related to the copper coating of a kind of titanium alloy box cupling.
Background technology
Along with growing to hydrocarbon resources demand of the world, impel the exploitation of oil-gas field to develop in depth gradually, some high pressure-temperatures, high pressure high temperature well are urgently developed.Because high pressure-temperature, high pressure high temperature well generally contain CO
2, H
2s and Cl
-, harsh bottom temperature, pressure and corrosion working condition are in the urgent need to using high-intensity anti-corrosion oil country tubular goods.Titanium alloy pipe has high specific tenacity and extremely strong CO
2+ H
2s+Cl
-corrosion resistance, therefore lot of domestic and international research institution, all in the exploitation of carrying out titanium alloy pipe, makes the research of titanium alloy pipe and application become current high pressure-temperature, the selection of high pressure high temperature well and the most popular problem of corrosion control.
Titanium alloy surface hardness is lower, wear resistance is poor, when titanium alloy pipe connects threadably, interlock, thread gluing phenomenon easily occurs in upper shackle process, has destroyed structural integrity and the sealing integrity of tubing string, and has brought certain potential safety hazard.Therefore to make titanium alloy oil well pipe in severe rugged environment, to use safely, must first solve the interlock problem of titanium alloy.Copper Plastic Deformation is good, is applied in metal material surface and can reduces frictional coefficient, reduces friction, thereby can improve the scuffing of screw thread.Therefore, the box cupling of many high steel grade oil well casings all adopts copper-plating technique to improve its interlock problem at present.
But because titanium alloy chemistry activity is higher, surface is easy to form one deck dense oxidation film, causes the bonding force of coating and titanium alloy substrate poor, in upper shackle process, coating often comes off.In addition, adopt electro-plating method when copper facing, because the relief fabric of screw thread causes non-uniform electric, thereby to cause copper plate skewness on coupling inner thread on coupling inner thread, the dimensional precision of double thread causes certain influence.Therefore, significant for the application of titanium alloy oil well pipe at titanium alloy coupling surface plating one deck bonding force copper plate higher, that be evenly distributed.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of this invention is to provide the copper coating of a kind of titanium alloy box cupling, can solve the poor and technical problem pockety of copper plate and titanium alloy substrate bonding force, obtain the copper plate that there is good combination ability and be evenly distributed at titanium alloy coupling surface.
For achieving the above object, the technical solution used in the present invention is: the copper coating of a kind of titanium alloy box cupling, comprises the following steps:
1) electrochemical deoiling
Box cupling is put into the electrochemical deoiling solution of 80 ~ 90 DEG C, soaked 5 ~ 10 minutes, electrochemical deoiling solution is for comprising NaOH, Na
2cO
3, Na
3pO
4and Na
2siO
3the aqueous solution, concentration is respectively 50 ~ 60g/L, 15 ~ 20g/L, 15 ~ 20g/L and 10 ~ 15g/L;
2) washing
The box cupling that removed oil is first soaked in warm water, then under flowing water, rinse, remove the oil solution that removes of workpiece surface;
3) pickling
By step 2) box cupling after treatment puts into immediately pickle solution and carries out pickling, and temperature is room temperature, and 2 ~ 5 minutes time, pickle solution is the HNO that comprises 100 ~ 120mL/L
3the HF aqueous solution with 60 ~ 80mL/L;
4) activation
Box cupling after pickling is put into activation solution immediately to be activated, 30 ~ 40 DEG C of temperature, 20 ~ 30 minutes time, activation solution pH is less than 6, and activation solution is the aqueous solution that comprises ethylene glycol 600 ~ 700mL/L, acid ammonium fluoride 20 ~ 35g/L, nickelous chloride 40 ~ 50g/L, lactic acid 10 ~ 20ml/L and acetic acid 180 ~ 200ml/L;
5) pre-plating with electroless nickel
Box cupling by step 4) after overactivation is put into chemical nickel-plating solution the inside and is carried out pre-plating with electroless nickel, temperature is 80 ~ 90 DEG C, 60 ~ 80 minutes time, pH is 4 ~ 6, and pre-plating with electroless nickel solution is the aqueous solution that comprises single nickel salt 20 ~ 30g/L, inferior sodium phosphate 20 ~ 33 g/L, lactic acid 20 ~ 30ml/L and sodium-acetate 10 ~ 15 g/L;
6) washing
The box cupling of nickel preplating is first soaked in warm water, then under flowing water, rinse, remove the chemical nickel-plating solution of workpiece surface;
7) electroless copper
The box cupling that step 6) is handled is put into chemical copper plating solution the inside and is carried out electroless copper, temperature is 40 ~ 50 DEG C, 80 ~ 100 minutes time, pH is 10 ~ 12, and chemical copper plating solution is the aqueous solution that comprises copper sulfate 6 ~ 10g/L, formaldehyde 8 ~ 12g/L and Seignette salt 16 ~ 24g/L;
8) washing is dried
Copper-plated box cupling is rinsed under flowing water, remove the chemical copper plating solution of workpiece surface, then dry;
9) stabilization treatment
The box cupling that step 8) is handled is placed in the stove of 130 ~ 150 DEG C and processes 1 ~ 1.5 hour, then takes out and is down to room temperature.
Beneficial effect of the present invention is as follows:
1) metallic nickel and most metals have good bonding force, and therefore preplating layer of metal nickel between titanium alloy box cupling and copper plate is conducive to improve the bonding force of copper plate and titanium alloy substrate.
2) the present invention adopts chemical nickel plating and chemical-copper-plating process, has avoided the coating phenomenon pockety that all causes at thread surface skewness because of electric field in electroplating process, is conducive to obtain equally distributed coating.
The complete not water of pickling rinses, but direct activation, has avoided in water washing process titanium alloy and water mutual effect at Surface Creation layer oxide film.
Activate and do not had water to rinse, but direct nickel preplating, avoided in water washing process titanium alloy and water mutual effect at Surface Creation layer oxide film.
Adopt chemically coated nickel method at the higher metallic nickel of titanium alloy coupling surface preplating one deck bonding force, be conducive to improve the bonding force of coating.
Adopt electroless copper method at titanium alloy coupling surface metal lining copper, be conducive to being uniformly distributed of copper coating.
Brief description of the drawings
Fig. 1 is process flow sheet of the present invention.
Fig. 2 is titanium alloy hoop copper plate of the present invention surface macro morphology figure.
Fig. 3 is titanium alloy hoop copper plate surface microscopic topographic figure of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1
In the titanium alloy coupling surface copper facing of TC4 material
Referring to Fig. 1, implementation and operation:
1) electrochemical deoiling: it is the electrochemical deoiling liquid of 80 DEG C that box cupling is placed in to temperature, soaks 10 minutes, and electrochemical deoiling solution is for comprising NaOH 50 g/L, Na
2cO
320g/L, Na
3pO
418g/L and Na
2siO
3the aqueous solution of 10 g/L;
2) washing: the box cupling that removed oil is first soaked in warm water, then rinse well under flowing water;
3) pickling: by step 2) box cupling after washing is placed in the pickle solution of room temperature, soaks 5 minutes, and Acidwash solution is for comprising HNO
3the aqueous solution of 100mL/L and HF 80mL/L;
4) activation: the box cupling after pickling is put into 30 DEG C of activation solutions immediately and soak 25 minutes, activation solution is the aqueous solution that comprises ethylene glycol 600 mL/L, acid ammonium fluoride 35g/L, nickelous chloride 50g/L, lactic acid 15ml/L and acetic acid 190ml/L, and pH value adjusts to 5.5;
5) pre-plating with electroless nickel: pre-plating with electroless nickel is carried out in the chemical nickel-plating solution the inside of the box cupling after overactivation being put into 85 DEG C, 60 minutes time, pre-plating with electroless nickel solution is the aqueous solution that comprises single nickel salt 20g/L, inferior sodium phosphate 25 g/L, lactic acid 25ml/L and sodium-acetate 10 g/L, and pH value adjusts to 4.0;
6) washing: the box cupling of nickel preplating is first soaked in warm water, then rinse well under flowing water;
7) electroless copper: the box cupling after washing is placed in to the chemical copper plating solution of 50 DEG C, and 80 minutes time, chemical copper plating solution is the aqueous solution that comprises copper sulfate 8g/L, formaldehyde 10g/L and Seignette salt 18g/L, and pH value adjusts to 10;
8) washing is dried: copper-plated box cupling is rinsed well under flowing water, then dried;
9) stabilization treatment: the stove that the box cupling of step 8) oven dry is placed in to 130 DEG C is processed 1.5 hours, then takes out and is down to room temperature.
After having operated, the macro morphology of box cupling as shown in Figure 2, visible coupling surface plating the copper plate of intact.Copper-plated box cupling is longitudinally cut open, and as shown in Figure 3, visible titanium alloy coupling surface has skim nickel layer to the microscopic appearance in cross section, and outermost layer is copper plate.
Embodiment 2
In the titanium alloy coupling surface copper facing of TC4 material
Implementation and operation:
1) electrochemical deoiling: it is the electrochemical deoiling liquid of 85 DEG C that box cupling is placed in to temperature, soaks 10 minutes, and electrochemical deoiling solution is for comprising NaOH 55 g/L; Na
2cO
315g/L; Na
3pO
415g/L; Na
2siO
3the aqueous solution of 10 g/L;
2) washing: the box cupling that removed oil is first soaked in warm water, then rinse well under flowing water;
3) pickling: by step 2) box cupling after washing is placed in the pickle solution of room temperature, soaks 3 minutes, and Acidwash solution is for comprising HNO
3the aqueous solution of 110mL/L and HF 70mL/L;
4) activation: the box cupling after pickling is put into 35 DEG C of activation solutions immediately and soak 20 minutes, activation solution is the aqueous solution of ethylene glycol 650 mL/L, acid ammonium fluoride 35g/L, nickelous chloride 40g/L, lactic acid 10ml/L and acetic acid 180ml/L, and pH value adjusts to 5.5;
5) pre-plating with electroless nickel: the box cupling by step 4) after overactivation is put into the chemical nickel-plating solution the inside of 80 DEG C and carried out pre-plating with electroless nickel, 70 minutes time, pre-plating with electroless nickel solution is the aqueous solution that comprises single nickel salt 25g/L, inferior sodium phosphate 20 g/L, lactic acid 20ml/L and sodium-acetate 10 g/L, and pH value adjusts to 5.0;
6) washing: the box cupling of nickel preplating is first soaked in warm water, then rinse well under flowing water;
7) electroless copper: the box cupling after step 6) washing is placed in to the chemical copper plating solution of 45 DEG C, and 90 minutes time, chemical copper plating solution is the aqueous solution that comprises copper sulfate 10g/L, formaldehyde 8g/L and Seignette salt 20g/L, and pH value adjusts to 12;
8) washing is dried: copper-plated box cupling is rinsed well under flowing water, then dried;
9) stabilization treatment: the stove that the box cupling of step 8) oven dry is placed in to 140 DEG C is processed 1 hour, then takes out and is down to room temperature.
Embodiment 3
Implementation and operation:
1) electrochemical deoiling: it is the electrochemical deoiling liquid of 90 DEG C that box cupling is placed in to temperature, soaks 8 minutes, and electrochemical deoiling solution is for comprising NaOH 60 g/L, Na
2cO
315g/L, Na
3pO
420g/L and Na
2siO
3the aqueous solution of 15 g/L;
2) washing: the box cupling that removed oil is first soaked in warm water, then rinse well under flowing water;
3) pickling: by step 2) box cupling after washing is placed in the pickle solution of room temperature, soaks 2 minutes, and Acidwash solution is for comprising HNO
3the aqueous solution of 120mL/L and HF 60mL/L;
4) activation: the box cupling after pickling is put into 40 DEG C of activation solutions immediately and soak 30 minutes, activation solution is the aqueous solution that comprises ethylene glycol 700 mL/L, acid ammonium fluoride 25g/L, nickelous chloride 50g/L, lactic acid 20ml/L, acetic acid 200ml/L, and pH value adjusts to 5.0;
5) pre-plating with electroless nickel: the box cupling by step 4) after overactivation is put into the chemical nickel-plating solution the inside of 90 DEG C and carried out pre-plating with electroless nickel, 80 minutes time, pre-plating with electroless nickel solution is the aqueous solution that comprises single nickel salt 30g/L, inferior sodium phosphate 30g/L, lactic acid 30ml/L and sodium-acetate 15g/L, and pH value adjusts to 6.0;
6) washing: the box cupling of nickel preplating is first soaked in warm water, then rinse well under flowing water;
7) electroless copper: the box cupling after step 6) washing is placed in to the chemical copper plating solution of 40 DEG C, and 100 minutes time, chemical copper plating solution is the aqueous solution that comprises copper sulfate 6g/L, formaldehyde 12/L and Seignette salt 22g/L, and pH value adjusts to 11;
8) washing is dried: copper-plated box cupling is rinsed well under flowing water, then dried;
9) stabilization treatment: the stove that the box cupling of step 8) oven dry is placed in to 150 DEG C is processed 1 hour, then takes out and is down to room temperature, finishes.
Claims (4)
1. the copper coating of titanium alloy box cupling, is characterized in that, comprises the following steps:
1) electrochemical deoiling
Box cupling is put into the electrochemical deoiling solution of 80 ~ 90 DEG C, soaked 5 ~ 10 minutes, electrochemical deoiling solution is for comprising NaOH, Na
2cO
3, Na
3pO
4and Na
2siO
3the aqueous solution, concentration is respectively 50 ~ 60g/L, 15 ~ 20g/L, 15 ~ 20g/L and 10 ~ 15g/L;
2) washing
The box cupling that removed oil is first soaked in warm water, then under flowing water, rinse, remove the oil solution that removes of workpiece surface;
3) pickling
By step 2) box cupling after treatment puts into immediately pickle solution and carries out pickling, and temperature is room temperature, and 2 ~ 5 minutes time, pickle solution is the HNO that comprises 100 ~ 120mL/L
3the HF aqueous solution with 60 ~ 80mL/L;
4) activation
Box cupling after pickling is put into activation solution immediately to be activated, 30 ~ 40 DEG C of temperature, 20 ~ 30 minutes time, activation solution pH is less than 6, and activation solution is the aqueous solution that comprises ethylene glycol 600 ~ 700mL/L, acid ammonium fluoride 20 ~ 35g/L, nickelous chloride 40 ~ 50g/L, lactic acid 10 ~ 20ml/L and acetic acid 180 ~ 200ml/L;
5) pre-plating with electroless nickel
Box cupling by step 4) after overactivation is put into chemical nickel-plating solution the inside and is carried out pre-plating with electroless nickel, temperature is 80 ~ 90 DEG C, 60 ~ 80 minutes time, pH is 4 ~ 6, and pre-plating with electroless nickel solution is the aqueous solution that comprises single nickel salt 20 ~ 30g/L, inferior sodium phosphate 20 ~ 33 g/L, lactic acid 20 ~ 30ml/L and sodium-acetate 10 ~ 15 g/L;
6) washing
The box cupling of nickel preplating is first soaked in warm water, then under flowing water, rinse, remove the chemical nickel-plating solution of workpiece surface;
7) electroless copper
The box cupling that step 6) is handled is put into chemical copper plating solution the inside and is carried out electroless copper, temperature is 40 ~ 50 DEG C, 80 ~ 100 minutes time, pH is 10 ~ 12, and chemical copper plating solution is the aqueous solution that comprises copper sulfate 6 ~ 10g/L, formaldehyde 8 ~ 12g/L and Seignette salt 16 ~ 24g/L;
8) washing is dried
Copper-plated box cupling is rinsed under flowing water, remove the chemical copper plating solution of workpiece surface, then dry;
9) stabilization treatment
The box cupling that step 8) is handled is placed in the stove of 130 ~ 150 DEG C and processes 1 ~ 1.5 hour, then takes out and is down to room temperature.
2. a kind of titanium alloy box cupling according to claim 1 copper coating, is characterized in that, comprises the following steps:
1) electrochemical deoiling: it is the electrochemical deoiling liquid of 80 DEG C that box cupling is placed in to temperature, soaks 10 minutes, and electrochemical deoiling solution is for comprising NaOH 50 g/L, Na
2cO
320g/L, Na
3pO
418g/L and Na
2siO
3the aqueous solution of 10 g/L;
2) washing: the box cupling that removed oil is first soaked in warm water, then rinse well under flowing water;
3) pickling: by step 2) box cupling after washing is placed in the pickle solution of room temperature, soaks 5 minutes, and Acidwash solution is for comprising HNO
3the aqueous solution of 100mL/L and HF 80mL/L;
4) activation: the box cupling after pickling is put into 30 DEG C of activation solutions immediately and soak 25 minutes, activation solution is the aqueous solution that comprises ethylene glycol 600 mL/L, acid ammonium fluoride 35g/L, nickelous chloride 50g/L, lactic acid 15ml/L and acetic acid 190ml/L, and pH value adjusts to 5.5;
5) pre-plating with electroless nickel: pre-plating with electroless nickel is carried out in the chemical nickel-plating solution the inside of the box cupling after overactivation being put into 85 DEG C, 60 minutes time, pre-plating with electroless nickel solution is the aqueous solution that comprises single nickel salt 20g/L, inferior sodium phosphate 25 g/L, lactic acid 25ml/L and sodium-acetate 10 g/L, and pH value adjusts to 4.0;
6) washing: the box cupling of nickel preplating is first soaked in warm water, then rinse well under flowing water;
7) electroless copper: the box cupling after washing is placed in to the chemical copper plating solution of 50 DEG C, and 80 minutes time, chemical copper plating solution is the aqueous solution that comprises copper sulfate 8g/L, formaldehyde 10g/L and Seignette salt 18g/L, and pH value adjusts to 10;
8) washing is dried: copper-plated box cupling is rinsed well under flowing water, then dried;
9) stabilization treatment: the stove that the box cupling of step 8) oven dry is placed in to 130 DEG C is processed 1.5 hours, then takes out and is down to room temperature.
3. a kind of titanium alloy box cupling according to claim 1 copper coating, is characterized in that, comprises the following steps:
1) electrochemical deoiling: it is the electrochemical deoiling liquid of 85 DEG C that box cupling is placed in to temperature, soaks 10 minutes, and electrochemical deoiling solution is for comprising NaOH 55 g/L; Na
2cO
315g/L; Na
3pO
415g/L; Na
2siO
3the aqueous solution of 10 g/L;
2) washing: the box cupling that removed oil is first soaked in warm water, then rinse well under flowing water;
3) pickling: by step 2) box cupling after washing is placed in the pickle solution of room temperature, soaks 3 minutes, and Acidwash solution is for comprising HNO
3the aqueous solution of 110mL/L and HF 70mL/L;
4) activation: the box cupling after pickling is put into 35 DEG C of activation solutions immediately and soak 20 minutes, activation solution is the aqueous solution of ethylene glycol 650 mL/L, acid ammonium fluoride 35g/L, nickelous chloride 40g/L, lactic acid 10ml/L and acetic acid 180ml/L, and pH value adjusts to 5.5;
5) pre-plating with electroless nickel: the box cupling by step 4) after overactivation is put into the chemical nickel-plating solution the inside of 80 DEG C and carried out pre-plating with electroless nickel, 70 minutes time, pre-plating with electroless nickel solution is the aqueous solution that comprises single nickel salt 25g/L, inferior sodium phosphate 20 g/L, lactic acid 20ml/L and sodium-acetate 10 g/L, and pH value adjusts to 5.0;
6) washing: the box cupling of nickel preplating is first soaked in warm water, then rinse well under flowing water;
7) electroless copper: the box cupling after step 6) washing is placed in to the chemical copper plating solution of 45 DEG C, and 90 minutes time, chemical copper plating solution is the aqueous solution that comprises copper sulfate 10g/L, formaldehyde 8g/L and Seignette salt 20g/L, and pH value adjusts to 12;
8) washing is dried: copper-plated box cupling is rinsed well under flowing water, then dried;
9) stabilization treatment: the stove that the box cupling of step 8) oven dry is placed in to 140 DEG C is processed 1 hour, then takes out and is down to room temperature.
4. a kind of titanium alloy box cupling according to claim 1 copper coating, is characterized in that, comprises the following steps:
1) electrochemical deoiling: it is the electrochemical deoiling liquid of 90 DEG C that box cupling is placed in to temperature, soaks 8 minutes, and electrochemical deoiling solution is for comprising NaOH 60 g/L, Na
2cO
315g/L, Na
3pO
420g/L and Na
2siO
3the aqueous solution of 15 g/L;
2) washing: the box cupling that removed oil is first soaked in warm water, then rinse well under flowing water;
3) pickling: by step 2) box cupling after washing is placed in the pickle solution of room temperature, soaks 2 minutes, and Acidwash solution is for comprising HNO
3the aqueous solution of 120mL/L and HF 60mL/L;
4) activation: the box cupling after pickling is put into 40 DEG C of activation solutions immediately and soak 30 minutes, activation solution is the aqueous solution that comprises ethylene glycol 700 mL/L, acid ammonium fluoride 25g/L, nickelous chloride 50g/L, lactic acid 20ml/L, acetic acid 200ml/L, and pH value adjusts to 5.0;
5) pre-plating with electroless nickel: the box cupling by step 4) after overactivation is put into the chemical nickel-plating solution the inside of 90 DEG C and carried out pre-plating with electroless nickel, 80 minutes time, pre-plating with electroless nickel solution is the aqueous solution that comprises single nickel salt 30g/L, inferior sodium phosphate 30g/L, lactic acid 30ml/L and sodium-acetate 15g/L, and pH value adjusts to 6.0;
6) washing: the box cupling of nickel preplating is first soaked in warm water, then rinse well under flowing water;
7) electroless copper: the box cupling after step 6) washing is placed in to the chemical copper plating solution of 40 DEG C, and 100 minutes time, chemical copper plating solution is the aqueous solution that comprises copper sulfate 6g/L, formaldehyde 12/L and Seignette salt 22g/L, and pH value adjusts to 11;
8) washing is dried: copper-plated box cupling is rinsed well under flowing water, then dried;
9) stabilization treatment: the stove that the box cupling of step 8) oven dry is placed in to 150 DEG C is processed 1 hour, then takes out and is down to room temperature, finishes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115242.5A CN103849914B (en) | 2014-03-26 | 2014-03-26 | Method for plating copper on titanium alloy coupling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115242.5A CN103849914B (en) | 2014-03-26 | 2014-03-26 | Method for plating copper on titanium alloy coupling |
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| CN103849914B CN103849914B (en) | 2015-04-22 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104947162A (en) * | 2015-07-22 | 2015-09-30 | 四川华丰企业集团有限公司 | Titanium alloy surface electroplating method |
| CN106245080A (en) * | 2016-08-05 | 2016-12-21 | 长安大学 | Pretreating process before a kind of TC4 hoop of titanium alloy oil well pipe copper facing |
| CN113249730A (en) * | 2021-04-28 | 2021-08-13 | 南京航空航天大学 | Titanium alloy wire copper modification method and application |
| CN113249712A (en) * | 2021-04-28 | 2021-08-13 | 南京航空航天大学 | Copper/yttrium oxide composite modification method for titanium alloy wire and application |
| CN114540801A (en) * | 2020-11-24 | 2022-05-27 | 娄底市安地亚斯电子陶瓷有限公司 | Nickel plating process suitable for ceramic sealing connector |
| CN114657616A (en) * | 2022-04-20 | 2022-06-24 | 阳江市鼎华晟新材料科技有限公司 | Stainless steel copper plating process |
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| CN113249712A (en) * | 2021-04-28 | 2021-08-13 | 南京航空航天大学 | Copper/yttrium oxide composite modification method for titanium alloy wire and application |
| CN114657616A (en) * | 2022-04-20 | 2022-06-24 | 阳江市鼎华晟新材料科技有限公司 | Stainless steel copper plating process |
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