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A kind of stabilizer applied to the structure of cyanide-free silver plating layer with crystal distribution in 10~100nm and preparation method thereof

A cyanide-free silver plating and crystal distribution technology, applied in the field of electrochemical silver plating, can solve the problems of high activity and easy discoloration, and achieve the effects of smooth appearance, improved discoloration resistance, and stable toxicity

Active Publication Date: 2018-05-29
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this active structure can be used in many specific environments, for general decorative plating and electronic plating, high activity brings engineering problems of easy discoloration

Method used

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  • A kind of stabilizer applied to the structure of cyanide-free silver plating layer with crystal distribution in 10~100nm and preparation method thereof
  • A kind of stabilizer applied to the structure of cyanide-free silver plating layer with crystal distribution in 10~100nm and preparation method thereof
  • A kind of stabilizer applied to the structure of cyanide-free silver plating layer with crystal distribution in 10~100nm and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0020] According to bright cyanogen-free silver-plated coating stabilizer preparation method of the present invention, following compound is formulated into stabilizer solution

[0021]

[0022] figure 1 1.2 A / dm at 40°C 2 Scanning electron micrograph (left) and scanning electron micrograph (right) of alkaline cyanide-free silver plating samples prepared using patented technology (ZL201110219268.0 and ZL201110226274.9) under the same conditions

Embodiment 2

[0024] According to bright cyanogen-free silver-plated coating stabilizer preparation method of the present invention, following compound is formulated into stabilizer solution

[0025]

[0026] figure 2 1.5 A / dm at 38°C 2 Scanning electron micrograph (left) and scanning electron micrograph (right) of alkaline cyanide-free silver plating samples prepared using patented technology (ZL201110219268.0 and ZL201110226274.9) under the same conditions

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Abstract

The invention discloses a stabilizer applied to a cyanide-free silver plating layer structure with crystals distributed at 10 to 100 nm, and a preparation method of the stabilizer. According to the invention, the stabilizer is stable and is low in toxicity; after the silver plating layer is treated through the stabilizer, the crystal morphology is changed; a scanning electron microscope study shows that a plating grows into a crystal structure with a Thiessen polygon shape from original spherical crystals of which the diameter is about 20 nm; through the filling function of high-energy atoms between the crystals, the appearance of the plating is more smooth and bright, and the anti-tarnishing property is remarkably improved; and the requirements of a plurality of fields such as decorative electroplating and functional electroplating can be met.

Description

technical field [0001] The invention specifically relates to the technical field of electrochemical silver plating, in particular to a stabilizer applied to a cyanide-free silver plating layer structure with a crystal distribution of 10-100 nm and a preparation method thereof. Background technique [0002] The silver-plated layer has high electrical and thermal conductivity, good welding performance, high chemical stability to organic acids and alkalis, and its price is cheaper than other precious metals. It has been widely used in the electronics industry, decorations, tableware and various A variety of handicrafts and other fields. Due to the advantages of high current efficiency, good dispersing ability, strong covering ability, and fine crystallization of the coating, so far, most of the silver plating processes at home and abroad still use the cyanide silver plating process to electroplate the silver layer. However, cyanide silver plating solution is highly toxic, seri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/46
CPCC25D3/46
Inventor 赵健伟周桂桃朱祎雯
Owner JIAXING UNIV