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A nickel-cobalt-manganese-lanthanum alloy plating solution and its preparation method and application

A nickel-cobalt-manganese-lanthanum and nickel-cobalt-manganese technology, which is applied in the field of nickel-cobalt-manganese-lanthanum alloy plating solution and its preparation, can solve the problem that the performance requirements of diamond tools cannot be met, the resistance to alternating thermal stress is poor, and the service life of the mold is affected. and other problems, to achieve the effects of crystal refinement, low porosity and low cost

Active Publication Date: 2022-04-12
广东奔朗超硬精密工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Electroplating single metal coatings, such as conventional pure Ni coatings, have good adhesion to the substrate, but the coating has low hardness and is not wear-resistant, which affects the service life of the crystallizer; in electroplating binary alloys, the Ni-Fe alloy layer has good wear resistance , but the brittleness is large, the internal stress is large, and it is prone to high-temperature thermal cracks; the Ni-Co coating has a long service life, but the nickel-cobalt coating must have a cobalt content of more than 30% to ensure high hardness and wear resistance, and the cost is expensive , the coating is easy to become brittle, which leads to sanding and decoating, poor resistance to alternating thermal stress, poor corrosion resistance, limited application, numerous production processes, and the traditional nickel-cobalt process nickel-cobalt carcass consumption is very fast, diamond The cutting edge is too early, causing the diamond to fall off and not fully play its role
In recent years, people have higher and higher requirements on the wear resistance of diamond tools. In order to obtain a wear-resistant coating for electroplated diamond, a new coating, namely nickel-cobalt-manganese ternary alloy coating, was proposed. However, due to the addition of manganese content in the plating solution The nickel-cobalt-manganese ternary alloy coating is very brittle and the elongation of the coating is very low. It cannot be used without a suitable toughening agent, and cannot meet people's requirements for the performance of diamond tools.

Method used

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  • A nickel-cobalt-manganese-lanthanum alloy plating solution and its preparation method and application

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preparation example Construction

[0029] A preparation method of the above-mentioned nickel-cobalt-manganese-lanthanum alloy plating solution, comprising:

[0030] Dissolve nickel sulfate, nickel chloride, boric acid, manganese sulfate, cobalt sulfate, and lanthanum oxide in water in sequence, and then add dissolved saccharin, butynediol, sodium lauryl sulfate, toughening agent and stabilizer in sequence, After mixing evenly, a nickel-cobalt-manganese-lanthanum plating solution is obtained; finally, the pH value is adjusted to 4.0-5.0 with sulfuric acid.

[0031] An application of the above-mentioned nickel-cobalt-manganese-lanthanum alloy plating solution on a diamond tool carcass. The nickel-cobalt-manganese-lanthanum alloy plating solution forms a nickel-cobalt-manganese-lanthanum alloy coating on the diamond tool carcass by electroplating, and the temperature during electroplating is 20-50°C.

[0032] The above-mentioned nickel-cobalt-manganese-lanthanum alloy plating solution is easy to import. On the ba...

Embodiment 1

[0034] A nickel-cobalt manganese-lanthanum alloy plating solution, comprising nickel sulfate 250g / L, nickel chloride 60g / L, manganese sulfate 1g / L, cobalt sulfate 8g / L, lanthanum oxide 1g / L, boric acid 45g / L, ammonium citrate 20g / L, ascorbic acid 1g / L, saccharin 5g / L, butynediol 0.5g / L, sodium lauryl sulfate 0.1g / L. The pH value of the nickel-cobalt-manganese-lanthanum alloy plating solution is 4.0-5.0.

[0035] Above-mentioned nickel-cobalt-manganese-lanthanum alloy plating solution is prepared by the following method:

[0036] 1) Dissolving nickel sulfate, nickel chloride, boric acid, manganese sulfate, cobalt sulfate, and lanthanum oxide in water in sequence;

[0037] 2) Add dissolved saccharin, butynediol, sodium lauryl sulfate, ammonium citrate and ascorbic acid successively to the solution of step 1), and mix well to obtain the nickel-cobalt-manganese-lanthanum plating solution, then adjust with sulfuric acid The pH of the solution was brought to 4.0.

Embodiment 2

[0039] A nickel-cobalt-manganese-lanthanum alloy plating solution, comprising nickel sulfate 280g / L, nickel chloride 45g / L, manganese sulfate 6g / L, cobalt sulfate 11g / L, lanthanum oxide 3g / L, boric acid 55g / L, ammonium citrate 35g / L, ascorbic acid 1g / L, saccharin 3g / L, butynediol 1.2g / L, sodium lauryl sulfate 0.15g / L. The pH value of the nickel-cobalt-manganese-lanthanum alloy plating solution is 4.2.

[0040] The preparation method of the nickel-cobalt-manganese-lanthanum alloy plating solution of this embodiment is the same as that of Embodiment 1, and will not be described in detail here.

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Abstract

The invention discloses a nickel-cobalt-manganese-lanthanum alloy plating solution, which comprises nickel sulfate 250-300g / L, nickel chloride 45-60g / L, manganese sulfate 1-10g / L, cobalt sulfate 8-14g / L, lanthanum oxide 1-5g / L, toughening agent 20-50g / L; Described toughening agent is ammonium citrate. Nickel-cobalt-manganese-lanthanum quaternary alloy elements are co-deposited to form an amorphous coating with high wear resistance and low porosity. Combined with a specific toughening agent, the adhesion with diamond is significantly improved and the stability is high, completely solving the alloy The brittleness of the coating has a long service life. The invention also discloses a preparation method of the nickel-cobalt-manganese-lanthanum alloy plating solution, which has simple operation, low production cost and can realize large-scale production and application. The invention also discloses the application of the above-mentioned nickel-cobalt-manganese-lanthanum alloy plating solution on the diamond tool carcass, the diamond has strong adhesion on the electroplating layer, and the grinding ratio of the electroplated diamond tool is improved.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a nickel-cobalt-manganese-lanthanum alloy plating solution and a preparation method and application thereof. Background technique [0002] Diamond has a series of excellent physical and chemical properties such as high hardness, high strength, high wear resistance and small linear expansion coefficient, so its abrasive tools are used to process hard and brittle difficult-to-machine materials. The electroplating method to prepare diamond tools is through the electrodeposition of metal, and the loose diamond particles are consolidated in the electroplating layer, so that the diamond particles have cutting ability. [0003] Electroplating single metal coatings, such as conventional pure Ni coatings, have good adhesion to the substrate, but the coating has low hardness and is not wear-resistant, which affects the service life of the crystallizer; in electroplating binary alloy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56C25D15/00
CPCC25D3/562C25D15/00
Inventor 尹育航宁下林陶洪亮
Owner 广东奔朗超硬精密工具有限公司