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Method for chemically plating high-phosphorus nickel-phosphorus alloy

A technology of electroless nickel plating and high-phosphorus nickel, which is applied in the field of material science, can solve the problem of high plating cost and achieve the effect of increasing the deposition rate

Active Publication Date: 2016-10-26
GUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This method will inevitably lead to high plating costs

Method used

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  • Method for chemically plating high-phosphorus nickel-phosphorus alloy
  • Method for chemically plating high-phosphorus nickel-phosphorus alloy

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Embodiment 1

[0020] Embodiment 1 of the present invention: the method for chemically plating high phosphorus nickel-phosphorus alloy,

[0021] 1. Liquid preparation and tank preparation method

[0022] (1) Preparation of liquid A (take the preparation of 50L as an example)

[0023] Dissolve 12.5kg of nickel sulfate with about 35L of pure water. After the dissolution, add 6.5g of citric acid, 0.75g of benzotriazole, 0.35g of benzimidazole, 0.875g of PPS, and 0.25g of OP-10 under stirring. After stirring and mixing evenly, set the volume to 50L.

[0024] (2) Preparation of liquid B (calculated based on the preparation of 50L)

[0025] Dissolve 8.0kg of sodium hypophosphite with about 35L of pure water. After the dissolution, add 3.6kg of crystalline sodium acetate, 2.125kg of citric acid, 1.125g of benzotriazole, 0.575g of benzimidazole, and 3.3125g of PPS under stirring. OP-10 1.125g, stir well and mix evenly, then dilute to 50L.

[0026] (3) Preparation of liquid C (for addition, calcu...

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Abstract

The present invention discloses a method for chemically plating a high-phosphorus nickel-phosphorus alloy. According to the present invention, the compounding of two organic nitrogen-containing compounds such as benzotriazole and benzimidazole can provide accelerating and stabilizing effects for the citric acid system chemical plating high-phosphorus nickel-phosphorus alloy, wherein N-2-hydroxyethyl ethylenediamine triacetic acid provides a phosphorus increasing effect for the citric acid system chemical plating high-phosphorus nickel-phosphorus alloy plating layer, is successfully applied in the aluminum alloy chemical plating high-phosphorus nickel-phosphorus alloy production in practice, and achieves the good effect; with the application of the method to perform laboratory plating, the plating liquid service life can achieve 8 metal cycles, the average plating rate is 10.3 [mu]m / h, and the average phosphorus content in the plating layer is 11.6%; and compared with the traditional process, the method of the present invention has the following characteristics that the plating liquid service life is increased by 60%, the plating speed is increased by 25%, and the phosphorus content in the plating layer is increased by 10.5%.

Description

technical field [0001] The invention belongs to the technical field of material science, in particular to a method for chemically plating high-phosphorus nickel-phosphorus alloy. Background technique [0002] Electroless nickel-phosphorus alloy plating technology can endow the surface of the material with many excellent properties such as high corrosion resistance and good wear resistance. It is widely used in high-tech fields such as aviation and aerospace to solve the main problem of poor corrosion resistance on the surface of aluminum alloy materials. . For the aerospace field, in order to ensure the normal operation of the spacecraft in space with extremely harsh natural conditions, in addition to requiring high corrosion resistance of the connector parts, it is also required to have high signal shielding properties. Electroless plating with high phosphorus (phosphorus content in the coating) More than 9%) nickel-phosphorus alloy technology, because the coating is non-m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36
CPCC23C18/36
Inventor 刘定富李雨舒刚
Owner GUIZHOU UNIV
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