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Method for determining multiple brightening agents in nickel plating solution

A technology of brightener and nickel plating, which is applied in the field of liquid chromatography analysis, can solve problems such as the inability to examine the content of brightener and the reasonable compatibility of brightener, and achieve the effects of increasing quality control capabilities, shortening measurement time, and reducing testing investment

Inactive Publication Date: 2006-10-11
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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AI Technical Summary

Problems solved by technology

These methods measure the total amount of additives in the electroplating solution, and cannot examine the content of various brighteners and guide the reasonable compatibility of brighteners.

Method used

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  • Method for determining multiple brightening agents in nickel plating solution
  • Method for determining multiple brightening agents in nickel plating solution
  • Method for determining multiple brightening agents in nickel plating solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Step 1: Weigh 300g of nickel sulfate, 40g of nickel chloride, and 40g of boric acid, and dissolve them in 1L of purified water heated to about 80°C. Prepare 1L of blank electroplating solution without any brightener.

[0020] Step 2: Prepare a series of mixed standard solutions containing brighteners A, B and C, wherein brightener A is 1,4-butynediol; brightener B is 1,4-butynedicyanide; brightener C is sodium saccharin. The concentration of each standard solution is shown in Table 1. Take standard solution 1 as an example to illustrate the preparation method.

[0021] Pipette 0.03mL brightener A, 0.20mL brightener B, and 0.30mL brightener C into 100mL volumetric flasks, and use the blank plating solution prepared in step 1 without any brightener to make up to 100mL to obtain a standard solution 1. The remaining standard solution preparation methods can be obtained by pipetting corresponding volumes of brightener A, brightener B and brightener C respectively accordi...

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Abstract

The invention discloses an analyze method used to detect multi brighteners of bright nickel plated liquid, when there are multi organic additives, as brightener, accelerator, restrainer, and smoothen agent, etc. The inventive method is based on the high-efficiency liquid phase spectrum analysis of brightener, with high accuracy and better repeatedly property.

Description

technical field [0001] The present invention relates to a liquid chromatography analysis method, in particular, the present invention relates to a method for accurately and reproducibly determining The method of various brighteners in the bright nickel plating bath. technical background [0002] NdFeB magnetic material is the third generation permanent magnet material. NdFeB permanent magnets are being rapidly developed and widely used due to their excellent performance, abundant raw materials and reasonable prices. It is mainly used in high-tech fields such as micro-motor, permanent magnet instrument, electronics industry, automobile industry, petrochemical industry, nuclear magnetic resonance device, audio equipment, magnetic levitation system, magnetic transmission mechanism and magnetic therapy equipment. [0003] However, due to the chemical properties of the NdFeB magnet itself, its corrosion resistance is poor, so its surface usually needs to be electroplated. Afte...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/86
Inventor 沈昊宇姚宇良牛伟
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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