Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electroplate liquid and electroplate method for cyanide-free gold plating of antimony-contained sulfite

A sulfite and cyanide-free gold plating technology, which is applied in the field of electroplating copper and tin, can solve the problems that restrict the promotion of cyanide-free electroplating, the quality of the coating is not high, the performance of the plating solution is not good, and the performance of the plating solution is excellent and the brightness is high. , the effect of good coating quality

Inactive Publication Date: 2016-02-10
无锡永发电镀有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing cyanide electroplating generally has the technical defects of poor performance of the plating solution and low coating quality, which seriously restrict the further promotion of cyanide-free electroplating in industry

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electroplate liquid and electroplate method for cyanide-free gold plating of antimony-contained sulfite
  • Electroplate liquid and electroplate method for cyanide-free gold plating of antimony-contained sulfite
  • Electroplate liquid and electroplate method for cyanide-free gold plating of antimony-contained sulfite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[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 0.5ms, the duty cycle is 30%, and the average current density is 0.5A / dm 2 ; The pH is 8, the temperature is 60°C, and the electroplating time is 40min.

Embodiment 2

[0039] The formulation of the electroplating solution is as follows:

[0040]

[0041] 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 0.6A / dm 2 ; The pH is 8.5, the temperature is 60°C, and the electroplating time is 35min.

Embodiment 3

[0043] The formulation of the electroplating solution is as follows:

[0044]

[0045] 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 1A / dm 2 ; The pH is 9, the temperature is 50° C., and the electroplating time is 20 minutes.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses electroplate liquid and an electroplate method for cyanide-free gold plating of antimony-contained sulfite. The electroplate liquid is composed of 10-15 g / L of gold chloride in terms of gold, 78-94 g / L of sulfite in terms of sulfite radicals, 0.20-0.58 g / L of alcoholamine and 0.08-0.22 g / L of antimonous oxide. According to the electroplate liquid, the sulfite serves as main coordination agents, the alcoholamine serves as electron accelerators, the antimonous oxide serves as brightening agents, and the gold chloride serves as main gold salt, so that the obtained electroplate liquid is good in dispersion capacity and covering capacity, cathode currents are high in efficiency, and the electroplate liquid is excellent in performance. By the adoption of the electroplate liquid, plating obtained through electroplating 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 copper-tin electroplating, in particular to an electroplating solution and an electroplating method for antimony-containing sulfite cyanide-free gold plating. Background technique [0002] Gold has good ductility, is easy to polish, has low contact resistance, good conductivity and welding performance, and has been widely used as a solderable coating in the electronics industry. Gold is resistant to high temperatures, and hard gold is relatively wear-resistant, so gold plating is widely used in precision instruments, meters, printed circuit boards, integrated circuits, tube shells, electrical contacts and other parts that require long-term stable electrical parameters. Gold has high chemical stability and is only soluble in aqua regia but not in other acids. Therefore, the gold coating has strong corrosion resistance and good anti-tarnish performance. At the same time, the gold alloy coating has various c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C25D3/48C25D5/18
Inventor 石明
Owner 无锡永发电镀有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com