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Barium-salt-contained alkaline plating Pt P salt electroplating bath and electroplating method thereof

An electroplating solution and alkaline 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: 2016-03-09
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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  • Barium-salt-contained alkaline plating Pt P salt electroplating bath and electroplating method thereof
  • Barium-salt-contained alkaline plating Pt P salt electroplating bath and electroplating method thereof
  • Barium-salt-contained alkaline plating Pt P salt electroplating bath and electroplating method thereof

Examples

Experimental program
Comparison scheme
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 0.5A / dm 2 ; The pH is 11, the temperature is 70°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 0.8A / dm 2 ; The pH is 13, the temperature is 80° C., and the electroplating time is 35 minutes.

Embodiment 3

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

[0035]

[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 12, the temperature is 70°C, and the electroplating time is 20min.

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Abstract

The invention discloses barium-salt-contained alkaline plating Pt P salt electroplating bath and an electroplating method of the electroplating bath. The electroplating bath comprises, by platinum, 20-30 g / L of P salt, 90-110 g / L of ammonium nitrate, 8-12 g / L of potassium nitrite or sodium nitrite and 6-10 mg / L of barium chloride by barium. P salt serves as platinum main salt, the ammonium nitrate and the potassium nitrite or sodium are taken as auxiliary salt, and the barium chloride serves as a brightening agent, so that the obtained electroplating bath has the good dispersion force and deep plating capacity, the current efficiency of a negative pole is high, and the performance of the plating bath is excellent. A coating obtained through electroplating of the electroplating bath under the alkaline condition 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 barium salt-containing P-salt electroplating solution for alkaline Pt plating 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 ...

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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