Acidic dinitrodiammineplatinum ammoniacal plating solution and plating method of Pt
An electroplating solution and acidic technology, 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, good quality of the plating layer, and excellent performance of the plating solution Effect
Inactive Publication Date: 2015-12-02
WUXI QINGYANG MACHINERY MFG
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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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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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The invention discloses an acidic dinitrodiammineplatinum ammoniacal plating solution and plating method of Pt. The plating solution comprises the following components: dinitrodiammineplatinum ammoniacal with the concentration of 20-30 g / L calculated in platinum, sulfamic acid with the concentration of 40-80 g / L and strontium chloride with the concentration of 10-15 mg / L calculated in strontium. According to the acidic dinitrodiammineplatinum ammoniacal plating solution and plating method of Pt, dinitrodiammineplatinum ammoniacal is adopted as main salt of platinum, ammonium nitrate and potassium nitrite or sodium is adopted as auxiliary salt, and strontium chloride is adopted as a brightener, so that the obtained plating solution is relatively good in dispersion force and deep plating capacity, the cathode current is high in efficiency, and the plating solution is excellent in property; a clad layer plated by using the plating solution under an alkaline condition is low in porosity, high in luminance and good in quality.
Description
technical field [0001] The invention relates to the technical field of platinum electroplating, in particular to a Pt acid P-salt electroplating solution 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 platinum products, which n...
Claims
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IPC IPC(8): C25D3/50C25D5/20
Inventor 唐靖岚
Owner WUXI QINGYANG MACHINERY MFG