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Dinitrodiammineplatinum ammoniacal electroplating solution for acidic platinum plating and electroplating method adopting dinitrodiammineplatinum ammoniacal electroplating solution

An electroplating solution and platinum plating technology, applied in the field of platinum electroplating, can solve the problems of poor plating solution performance, low plating solution current efficiency, and poor plating quality, and achieve high cathode current efficiency, good plating quality, and excellent plating solution performance. Effect

Inactive Publication Date: 2015-12-02
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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  • Dinitrodiammineplatinum ammoniacal electroplating solution for acidic platinum plating and electroplating method adopting dinitrodiammineplatinum ammoniacal electroplating solution
  • Dinitrodiammineplatinum ammoniacal electroplating solution for acidic platinum plating and electroplating method adopting dinitrodiammineplatinum ammoniacal electroplating solution
  • Dinitrodiammineplatinum ammoniacal electroplating solution for acidic platinum plating and electroplating method adopting dinitrodiammineplatinum ammoniacal electroplating solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The formulation of the electroplating solution is as follows:

[0028]

[0029] 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 0.5A / dm 2 ; The pH is 2, the temperature is 70°C, and the electroplating time is 40min.

Embodiment 2

[0031] The formulation of the electroplating solution is as follows:

[0032]

[0033] 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 0.8A / dm 2 ; The pH is 0.5, the temperature is 80°C, and the electroplating time is 35min.

Embodiment 3

[0035] The formulation of the electroplating solution is as follows:

[0036]

[0037] 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 pH is 1.5, the temperature is 70°C, and the electroplating time is 20min.

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Abstract

The invention discloses a dinitrodiammineplatinum ammoniacal electroplating solution for acidic platinum plating and an electroplating method adopting the dinitrodiammineplatinum ammoniacal electroplating solution. The dinitrodiammineplatinum ammoniacal electroplating solution comprises 20-30 g / L of dinitrodiammineplatinum ammoniacal which is measured by the content of platinum, 55-105 g / L of sulfanilic acid and 2-6 mg / L of calcium chloride which is measured by the content of calcium. Dinitrodiammineplatinum ammoniacal is utilized as a platinum main salt, sulfanilic acid is utilized as a complexing agent, and strontium chloride is utilized as a brightening agent, so that the obtained dinitrodiammineplatinum ammoniacal electroplating solution is relatively high in dispersion force and deep plating capability, and high in cathodic current efficiency and performance; when the dinitrodiammineplatinum ammoniacal electroplating solution is adopted for electroplating under an alkali condition, the obtained plating is low in porosity, and high in brightness and quality.

Description

technical field [0001] The invention relates to the technical field of platinum electroplating, in particular to a P-salt electroplating solution for acidic platinum plating and an electroplating method thereof. Background technique [0002] Platinum 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 platinum pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/50C25D5/20
Inventor 唐靖岚
Owner WUXI QINGYANG MACHINERY MFG
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