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Chemical-plated multifunctional nickel-tin-phosphorus alloy plating solution and plating layer thereof

A multi-functional, electroless plating technology, applied in the direction of liquid chemical plating, metal material coating process, coating, etc., can solve problems that do not conform to the development trend, carbon dioxide corrosion, positive corrosion potential, etc., to improve the scope of application, increase Non-magnetic, the effect of solving the problem of plating speed

Active Publication Date: 2014-09-03
林忠华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Its disadvantage is that it contains heavy metals Pb and Cd, which does not meet the development trend of environmental protection at home and abroad; Sn 4+ The content is relatively low, the ductility is relatively low, the corrosion potential is relatively positive, and the corrosion resistance of hydrogen sulfide, chloride and carbon dioxide needs to be continuously improved

Method used

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  • Chemical-plated multifunctional nickel-tin-phosphorus alloy plating solution and plating layer thereof
  • Chemical-plated multifunctional nickel-tin-phosphorus alloy plating solution and plating layer thereof
  • Chemical-plated multifunctional nickel-tin-phosphorus alloy plating solution and plating layer thereof

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Experimental program
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Effect test

Embodiment 1-5

[0054] Table 1 The composition of embodiment 1-5 electroless multifunctional nickel-tin-phosphorus alloy plating solution

[0055]

[0056] Wherein: the compound carboxylic acid complexing agent used in embodiment 1 consists of: hydroxypropionic acid and hydroxysuccinic acid are mixed 0.15mol / L by the amount concentration of substance 1:1, propionic acid 0.02mol / L, 2-hydroxypropane- 1,2,3-Triacetic acid sodium salt 0.08mol / L, KNaC 4 h 4 o 6 4H 2 O0.02mol / L;

Embodiment 2

[0057] The composite carboxylic acid complexing agent used in embodiment 2 consists of: hydroxypropionic acid and hydroxysuccinic acid mix 0.5mol / L by substance amount concentration 2:1, propionic acid 0.3mol / L, 2-hydroxypropane-1, 2,3-Triacetic acid sodium salt 0.1mol / L, KNaC 4 h 4 o 6 4H 2 O0.1mol / L;

Embodiment 3

[0058] The composite carboxylic acid complexing agent used in embodiment 3 consists of: hydroxypropionic acid and hydroxysuccinic acid mixed 0.8mol / L according to the amount concentration of substance 1:2, propionic acid 0.2mol / L, 2-hydroxypropane-1, 2,3-Triacetic acid sodium salt 0.08mol / L, KNaC 4 h 4 o 6 4H 2 O0.02mol / L;

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Abstract

The invention belongs to the field of chemical plating solutions, and in particular relates to a chemical-plated multifunctional nickel-tin-phosphorus alloy plating solution and a plating layer thereof. The plating solution is composed of the following components: 0.08-0.29mol / L of NiSO4.6H2O, 0.3-1.12mol / L of NaH2PO2.H2O, 0.08-0.26mol / L of SnCl4.3H2O, 0.04-3.0mol / L of composite carboxylic acid complexing agent, 0.01-0.04mol / L of amino catalytic complexing agent, 15-100PPm of surfactant and the balance of water. The plating solution is free from Pb and Cd heavy metal ions and more environment-friendly and has high stability and high deposition speed. Due to the increase of the Sn ions, the ductility of the plating layer is greatly improved, the hydrogen sulfide, chloride and carbon dioxide corrosive resistance of the plating layer is improved, the corrosion potential is more negative, the conductivity is better, and the plating layer can be used as a better invisible material.

Description

technical field [0001] The invention belongs to the field of electroless plating solution, and in particular relates to an electroless plating multifunctional nickel-tin-phosphorus alloy plating solution and a plating layer thereof. Background technique [0002] Electroless nickel plating, the coating is deposited in a nickel salt solution without electric current, and is easy to operate; it can be deposited on the surface of metal or non-metal materials of different shapes: the coating is amorphous, dense and porosity-free, corrosion-resistant and wear-resistant , non-magnetic; and has a good decorative effect. It is widely used in the electronics industry, automobile industry, aerospace, petrochemical and other industries. Therefore, it has been a hot topic of anti-corrosion industry, scholars and experts for a century. And the development stability is good, the plating solution that deposition speed is fast and high corrosion resistance, high wear resistance, dense and ...

Claims

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Application Information

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IPC IPC(8): C23C18/50
Inventor 林忠华
Owner 林忠华
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