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Electroplating solution additive for electroplating bright nickel-titanium alloy

A titanium alloy and electroplating solution technology, applied in the field of electroplating solution additives for electroplating bright nickel-titanium alloys, can solve the problems of affecting product quality, appearing pinholes, pitting, insufficient brightness and uniformity of workpieces, etc., and achieves a wide range of brightness. , the effect of saving nickel and increasing toughness

Active Publication Date: 2013-11-20
湖北广志科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The workpieces of the general nickel-titanium alloy electroplating process often have insufficient brightness and uniformity, and sometimes appear pinholes and pits, which affect product quality.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0043] The present invention will be described below by way of examples.

[0044] 1) the solution composition of three embodiments is as follows:

[0045] Example one Example two Example three NiSO 4 ·6H 2 o 50g / L 55g / L 60g / L NiCl 2 ·6H 2 o 15g / L 10g / L 0g / L TiOSO 4 3.5g / L 7.0g / L 10.5g / L Na 3 C6H5O7.2H2O 50g / L 55g / L 60g / L Succinimide 8g / L 9g / L 10g / L h 3 BO 3 30g / L 35g / L 40g / L brightener 4ml / L 3ml / L 2ml / L Adjuvant 8ml / L 8.5ml / L 10ml / L

[0046] 2) the operating conditions of the three embodiments are as follows:

[0047] pH 3.0~5.0

[0048] T(°C) 40~60

[0049] D. K (A / dm 2 ) 0.5~5.0

[0050] Anode nickel plate, ruthenium-titanium anode, rust-free steel plate (instance three does not need)

[0051] Time 10 minutes for Example 1, 20 minutes for Example 2, 30 minutes for Example 3

[0052] 3) the electroplating process of three examples is a...

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Abstract

The invention provides an electroplating solution bright additive and auxiliary additive for electroplating a bright nickel-titanium alloy. The bright additive is composed of 30-40 g / L propane sulfonate pyridine, 40-50 g / L propane alcohol ethoxy ether, 30-50 g / L N,N-diethylallylene amine formate, 5-10 g / L propiolic alcohol, 10-12 g / L sodium hydroxymethyl sulfonate and the balance of distilled water or deionized water. The auxiliary additive is composed of 180-200 g / L saccharin (or soluble saccharin), 200-250 g / L dilute sodium propyl sulfonate (35%), 5-10 g / L sodium hydroxypropyl thiosulfate and the balance of distilled water or deionized water. The additives are simple in components, non-toxic and pollution-free, and free of Cr<6+>.When the invention is used for electroplating the bright nickel-titanium alloy, the wear resistance, corrosion resistance and toughness of the coating are greatly enhanced. The invention has very important actions in common industry and in the fields of military affairs, national defense, aerospace and submarine ships.

Description

technical field [0001] The invention relates to a metal electroplating method and an electroplating solution, in particular to an electroplating solution for electroplating a bright nickel-titanium alloy additive . Background technique [0002] In the usual decorative electroplating production, chrome plating is often used as the final process, because the chrome plating has a bright and white appearance, and has the characteristics of high hardness, strong wear resistance, corrosion resistance, and high temperature resistance, and is widely used. . However, since the chromium plating process still uses the highly toxic hexavalent chromium salt, it has a great harmful effect on the environment, water sources, the atmosphere, and the human body. [0003] The research and development of new, environmentally friendly substitute chromium coatings has great application prospects and significant social and economic benefits. The electroplating process of nickel-titanium alloy ...

Claims

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Application Information

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IPC IPC(8): C25D3/56
Inventor 吴慧敏
Owner 湖北广志科技服务有限公司
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