A long-acting nano-micro composite layer synthesis liquid and its preparation method

Abstract

The invention relates to long-acting nano-micron composite layer synthetic solution and a preparation method thereof. The synthetic solution is prepared from a main salt, a reducer, a main complexing agent, an auxiliary complexing agent, a buffer a, a buffer b, silicon carbide, magnesium oxide, a cationic surfactant, a nonionic surfactant, rare earth, a stabilizer, a promoter and deionized water.Compared with the normal conventional chemical composite plating solution, the synthetic solution has the advantages of high plating speed, stable performance of plating solution, no pollution and high economy. The synthetic solution can be recycled by only periodically replenishing loss; and the binding force of the synthetic solution and a matrix reaches up to over 400MPa, is 200MPa higher thanthat of the common alkaline self-decomposition plating solution and is 300Mpa higher than that of electroplating.

Description

technical field

[0001] The invention relates to the field of metal-ceramic alloys, in particular to a technology of metal-ceramic composite plating. Background technique

[0002] As we all know, metals, especially metal alloys, have superior physical and mechanical properties, such as certain hardness, excellent toughness and ductility, compactness, impact resistance, and pressure resistance. And ceramics have high hardness, superior wear resistance, corrosion resistance and so on. The combination of the two is the inevitable combination of advantages and the way to minimize their respective shortcomings, that is, cermet chemical composite plating. The composite layer ceramic alloy synthesis technology is transformed on the basis of self-catalyzed nickel-phosphorus alloy. Self-catalytic plating is a relatively new process technology.

[0003] Chinese patent "environmentally friendly nano-composite enhanced wear-resistant coating formation solution", patent number: 2006100...

Examples

Embodiment 1

[0047] A long-acting nano-micro composite layer synthetic solution, prepared from the following raw materials in parts by weight:

[0048] Nickel sulfate 40g, sodium hypophosphite 40g, citric acid 40g, sodium citrate 20g + sodium tetraborate 20g, anhydrous sodium sulfate 10g or sodium acetate 10g, glacial acetic acid 10mL, silicon carbide 8g, magnesium oxide 0.3g, hexadecyl triborate Methylammonium bromide 0.8g, polyethylene glycol 0.8g, ceric sulfate 0.08g, potassium iodate 10mg, sodium fluoride 10g, 50°C deionized water 1000mL.

[0049] A preparation method of long-acting nano-micro composite layer synthetic liquid:

[0050] A. Silicon carbide activation treatment: Soak in 20 mL of 5% trisodium phosphate solution for 10 minutes, then add 300 mL of deionized water to wash until pH = 4-8, and after 30 minutes of precipitation, absorb the deionized water above the silicon carbide. Make it into a silicon carbide mixed solution, referred to as A solution for later use;

[0051]...

Embodiment 2

[0074] The preferred ratio of raw materials for a long-acting nano-micro composite layer synthetic liquid is:

[0075] Nickel sulfate 25g, sodium hypophosphite 24g, citric acid 30g, sodium citrate 10g, sodium tetraborate 20g, anhydrous sodium sulfate 15g or sodium acetate 15g, glacial acetic acid 20mL, silicon carbide 10g, magnesium oxide 0.5g, cationic surfactant 0.3g, 0.6g of nonionic surfactant, 0.01g of ceric sulfate, 2mg of potassium iodate, 0.6g of sodium fluoride, 1000mL of 70°C deionized water. The preparation method of the synthetic liquid is carried out according to the steps in Example 1. The area of ​​the plating workpiece is about 03dm2 / L to 1.5dm2 / L.

[0076] In this embodiment, only the loss needs to be replenished periodically, and the plating period is 5 hours, the main salt is replenished by 1-20 g / L, and the reducing agent is replenished by 1-20 g / L. Taking this as the base, add 1 to 20g for each additional cycle. Other auxiliary substances can be supplem...

technical field

[0001] The invention relates to the field of metal-ceramic alloys, in particular to a technology of metal-ceramic composite plating. Background technique

[0002] As we all know, metals, especially metal alloys, have superior physical and mechanical properties, such as certain hardness, excellent toughness and ductility, compactness, impact resistance, and pressure resistance. And ceramics have high hardness, superior wear resistance, corrosion resistance and so on. The combination of the two is the inevitable combination of advantages and the way to minimize their respective shortcomings, that is, cermet chemical composite plating. The composite layer ceramic alloy synthesis technology is transformed on the basis of self-catalyzed nickel-phosphorus alloy. Self-catalytic plating is a relatively new process technology.

[0003] Chinese patent "environmentally friendly nano-composite enhanced wear-resistant coating formation solution", patent number: 2006100...

Examples

Embodiment 1

[0047] A long-acting nano-micro composite layer synthetic solution, prepared from the following raw materials in parts by weight:

[0048] Nickel sulfate 40g, sodium hypophosphite 40g, citric acid 40g, sodium citrate 20g + sodium tetraborate 20g, anhydrous sodium sulfate 10g or sodium acetate 10g, glacial acetic acid 10mL, silicon carbide 8g, magnesium oxide 0.3g, hexadecyl triborate Methylammonium bromide 0.8g, polyethylene glycol 0.8g, ceric sulfate 0.08g, potassium iodate 10mg, sodium fluoride 10g, 50°C deionized water 1000mL.

[0049] A preparation method of long-acting nano-micro composite layer synthetic liquid:

[0050] A. Silicon carbide activation treatment: Soak in 20 mL of 5% trisodium phosphate solution for 10 minutes, then add 300 mL of deionized water to wash until pH = 4-8, and after 30 minutes of precipitation, absorb the deionized water above the silicon carbide. Make it into a silicon carbide mixed solution, referred to as A solution for later use;

[0051]...

Embodiment 2

[0074] The preferred ratio of raw materials for a long-acting nano-micro composite layer synthetic liquid is:

[0075] Nickel sulfate 25g, sodium hypophosphite 24g, citric acid 30g, sodium citrate 10g, sodium tetraborate 20g, anhydrous sodium sulfate 15g or sodium acetate 15g, glacial acetic acid 20mL, silicon carbide 10g, magnesium oxide 0.5g, cationic surfactant 0.3g, 0.6g of nonionic surfactant, 0.01g of ceric sulfate, 2mg of potassium iodate, 0.6g of sodium fluoride, 1000mL of 70°C deionized water. The preparation method of the synthetic liquid is carried out according to the steps in Example 1. The area of ​​the plating workpiece is about 03dm2 / L to 1.5dm2 / L.

[0076] In this embodiment, only the loss needs to be replenished periodically, and the plating period is 5 hours, the main salt is replenished by 1-20 g / L, and the reducing agent is replenished by 1-20 g / L. Taking this as the base, add 1 to 20g for each additional cycle. Other auxiliary substances can be supplem...