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Platinum electroplating solution comprising dihydrogen dinitrosulfatoplatinate and electroplating method adopting platinum electroplating solution

A technology of dinitrosulfuric acid platinum dihydrogen and dodecylsulfuric acid, which is applied in the field of electroplating platinum, can solve the problems of poor performance of the plating solution, poor quality of the plating layer, and low current efficiency of the plating solution, and achieve high cathode current efficiency, The effect of good coating quality and excellent bath performance

Inactive Publication Date: 2015-12-16
WUXI QINGYANG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the process is relatively simple, the current efficiency of the plating solution is low, the performance of the plating solution is poor, and the quality of the coating is not good.

Method used

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  • Platinum electroplating solution comprising dihydrogen dinitrosulfatoplatinate and electroplating method adopting platinum electroplating solution
  • Platinum electroplating solution comprising dihydrogen dinitrosulfatoplatinate and electroplating method adopting platinum electroplating solution
  • Platinum electroplating solution comprising dihydrogen dinitrosulfatoplatinate and electroplating method adopting platinum electroplating solution

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Experimental program
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Effect test

Embodiment 1

[0026] The formulation of the electroplating solution is as follows:

[0027]

[0028] Plating process conditions: the pulse width of single pulse square wave current is 0.5ms, the duty cycle is 30%, and the average current density is 2A / dm 2 ; The temperature is 80°C, and the electroplating time is 40min.

Embodiment 2

[0030] The formulation of the electroplating solution is as follows:

[0031]

[0032] Plating process conditions: the pulse width of single pulse square wave current is 0.6ms, the duty cycle is 25%, and the average current density is 2.5A / dm 2 ; The temperature is 80°C, and the electroplating time is 35min.

Embodiment 3

[0034] The formulation of the electroplating solution is as follows:

[0035]

[0036] Plating process conditions: the pulse width of single pulse square wave current is 0.8ms, the duty cycle is 20%, and the average current density is 3A / dm 2 ; The temperature is 80°C, and the electroplating time is 20min.

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Abstract

The invention discloses a platinum electroplating solution comprising dihydrogen dinitrosulfatoplatinate and an electroplating method adopting the platinum electroplating solution. The electroplating solution comprises 4-6 g / L of dihydrogen dinitrosulfatoplatinate calculated by platinum, 100-140 g / L of water-soluble phosphate calculated by phosphate radicals, 4-8 mg / L of sodium dodecyl sulfate or dodecyl sulfate and sulfamic acid capable of adjusting the pH of the electroplating solution to be 1-2. According to the invention, dihydrogen dinitrosulfatoplatinate is used as platinum main salt, phosphate is used as brightener salt, dodecyl sulfate is used as an additive, and sulfamic acid is used for adjusting the pH of the electroplating solution to be acidic, so that the obtained electroplating solution has better dispersancy and deep plating capacity, and is high in cathode current efficiency and excellent in performance. A plating layer obtained by electroplating through the electroplating solution under alkaline conditions is low in porosity, high in brightness and good in quality.

Description

technical field [0001] The invention relates to the technical field of platinum electroplating, in particular to a platinum electroplating solution of platinum dinitrosulfuric acid and an electroplating method thereof. Background technique [0002] Platinum (Pt) has superior properties and is widely used. In the jewelry industry, it is mainly used as decorations and handicrafts. In the chemical industry, it is used to manufacture advanced chemical vessels, platinum crucibles, electrodes and catalysts to accelerate chemical reactions. Platinum-iridium alloy is the material from which fountain pen nibs are made. Especially in the automobile industry, platinum plays an irreplaceable role in exhaust gas treatment, and its consumption accounts for almost half of the platinum industry's consumption. because. However, platinum resources are scarce and expensive, which restricts the application of platinum electrodes. Therefore, platinum-plated materials are used to replace pure...

Claims

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Application Information

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IPC IPC(8): C25D3/52
Inventor 唐靖岚
Owner WUXI QINGYANG MACHINERY MFG
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