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Device and method for removing metal plating layer on back of nano-alumina template

A technology of nano-alumina and back metal, which is applied in metal processing equipment, grinding machines, grinding/polishing equipment, etc., and can solve problems such as failure to recycle nano-alumina powder, abrasion of alumina templates, and high labor intensity , to achieve uniform force, improve utilization, and reduce labor intensity

Inactive Publication Date: 2010-08-25
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the following disadvantages: First, it usually takes more than 2 hours to completely remove a metal coating, which is labor-intensive and inefficient; second, because the alumina template used in the experiment is very thin, only about tens of microns, the strength Extremely poor, if the force is slightly too large or uneven during the wiping process, it is easy to scratch the alumina template, and the entire experiment will be wasted; the third is that the nano-alumina powder cannot be recycled and reused, resulting in waste

Method used

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  • Device and method for removing metal plating layer on back of nano-alumina template
  • Device and method for removing metal plating layer on back of nano-alumina template
  • Device and method for removing metal plating layer on back of nano-alumina template

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Embodiment 1: Removal of the gold coating on the back side of the nano-alumina template

[0016] First, the device for removing the metal coating on the back side of the nano-alumina template is assembled according to the configuration schematic diagram shown in Figure 1: the device includes a magnetic stirrer 2 on the work disk 4, and a speed control switch 7 is housed in the work disk 4. A magnetic stirrer composed of a motor 6 and a bar magnet 5 driven by the motor 6; the magnetic stirrer 2 is wrapped with a 1-5mm thick alcohol cotton 1; the alcohol cotton 1 is a absorbent cotton soaked in alcohol .

[0017] A. Take a piece of nano-alumina template 3 with a diameter of 10mm and a gold coating on the back, and fix the nano-alumina template 3 on the bottom surface center of the magnetic stirrer work plate 4 with the gold coating on the back facing up with double-sided adhesive tape. Sprinkle 0.5g nano-alumina powder on the surface of the gold coating, and gently place...

Embodiment 2

[0022] Embodiment 2: Removal of the silver coating on the back side of the nano-alumina template

[0023] Using the device shown in Figure 2, a piece of nano-alumina template with a diameter of 10mm and a silver coating on the back is fixed on the bottom surface of a petri dish with double-sided tape facing upwards, and sprinkles on the silver coating. Put 0.5g of nano-alumina powder on it, then place the petri dish on the working plate of the magnetic stirrer, and gently place a magnetic stir bar with a thickness of 3mm on the silver coating with an alcohol cotton wrap; Adjust the speed of the magnetic stirrer to the minimum value before the magnetic stirrer rotates stably, and then slowly increase the speed. After rotating for 30 minutes, it is observed that the silver coating has been completely removed, and the speed of the magnetic stirrer is slowly adjusted. Smallest to smallest, and last to off. Remove the magnetic stir bar and template wrapped in alcohol cotton and re...

Embodiment 3

[0025] Embodiment 3: Removal of the copper coating on the back side of the nano-alumina template

[0026]Using the device shown in Figure 2, a piece of nano-alumina template with a diameter of 10mm and a copper plating layer on the back is fixed on the bottom surface of a petri dish with double-sided tape facing upwards, and on the copper plating layer. Sprinkle the nano-alumina powder of 0.5g, then this petri dish is placed on the work plate of magnetic stirrer, and the magnetic stir bar that the thickness of an alcohol cotton wrapping layer is 3mm is placed gently on the copper plating layer; Before starting the magnetic stirrer, adjust its speed to the minimum. When the magnetic stirrer rotates stably, slowly increase the speed. After 30 minutes of rotation, it is observed that the copper coating has been completely removed. Slowly adjust the speed of the magnetic stirrer. to minimum, and finally off. Remove the magnetic stir bar and template wrapped in alcohol cotton and ...

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Abstract

The invention discloses a method and a device for removing a metal plating layer on the back of a nano-alumina template. The method is characterized by comprising the following steps of: fixing the metal plating layer on the back of the nano-alumina template on the bottom surface of a container in a way that the metal plating layer faces upwards, putting the container on a working disk of a magnetic stirring apparatus, and spreading 0.1 to 1g of nano-alumina powder, silicon dioxide powder or silicon carbide powder on the surface of the metal plating layer; coating a layer of alcohol swab with the thickness between 1 and 5mm on the outside of a magnetic stirring bar, and putting the magnetic stirring bar on the metal plating layer; slowly adjusting the minimal rotating speed to a higher speed through a speed control switch; and when the metal plating layer is removed to meet the requirement, adjusting the rotating speed to the minimal rotating speed slowly, and finally switching off the speed control switch, wherein the metal plating layer is a gold plating layer, a silver plating layer or a copper plating layer. The method and the device can fulfill the aim of quickly and conveniently removing the metal plating layer on the back of the nano-alumina template, and can avoid the problem that the template is damaged due to overlarge or nonuniform stress; and wear-resistant powder can be conveniently recovered by using the container, and the utilization rate of the wear-resistant powder is improved.

Description

technical field [0001] The invention belongs to the technical field of metal coating removal, and in particular relates to a device and a method for removing the metal coating on the back of a nano-alumina template by using a magnetic stirrer. Background technique [0002] When using a nano-alumina template as a template for synthesizing nanomaterials, a metal coating (gold, silver or copper) is usually sputtered on its back as a working electrode during electroplating, and the metal coating needs to be removed after electroplating. At present, usually use tweezers to hold the alcohol cotton ball dipped in nano-alumina powder and wipe it repeatedly on the metal coating until the coating is completely removed. However, this method has the following disadvantages: First, it usually takes more than 2 hours to completely remove a metal coating, which is labor-intensive and inefficient; second, because the alumina template used in the experiment is very thin, only about tens of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/48B24B27/033
Inventor 贾冲冯克宝陈翌庆苏勇张建康
Owner HEFEI UNIV OF TECH
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