Electrodeposition preparation method of stainless steel coating by means of deep-eutectic solvent

A deep eutectic solvent and electrodeposition technology, applied in the field of surface engineering and surface treatment, can solve problems such as low current efficiency and difficulty in achieving clean production, achieve excellent wear resistance and corrosion resistance, and have a bright, smooth and dense surface appearance , Environmentally friendly effect

Inactive Publication Date: 2018-11-20
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention aims to solve the problems of low current efficiency and difficulty in realizing clean production in the existing stainless steel electroplating industry

Method used

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  • Electrodeposition preparation method of stainless steel coating by means of deep-eutectic solvent
  • Electrodeposition preparation method of stainless steel coating by means of deep-eutectic solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This deep eutectic solvent electrodeposition prepares the method for stainless steel coating, and its specific steps are as follows:

[0019] Step 1. Under an inert gas environment, firstly mix the quaternary ammonium salt and the polyol according to the molar ratio of 1:3 to form a 50mL deep eutectic solvent, and then add hexahydrate di Nickel chloride, chromium trichloride hexahydrate and ferrous chloride tetrahydrate, the prepared deep eutectic solvent electrolyte; wherein the quaternary ammonium salt is choline chloride, the polyhydric alcohol is ethylene glycol; dichloride hexahydrate The molar ratio of nickel chloride, chromium trichloride hexahydrate and ferrous chloride tetrahydrate is 1:6:3;

[0020] Step 2. Use the chromium sheet as the anode, and the pretreated substrate (copper sheet, the pretreatment process is that the substrate is polished with sandpaper, ultrasonically acetone, rinsed with distilled water, and dried with cold air) as the cathode, and ele...

Embodiment 2

[0023] This deep eutectic solvent electrodeposition prepares the method for stainless steel coating, and its specific steps are as follows:

[0024] Step 1. Under an inert gas environment, firstly mix the quaternary ammonium salt and the polyol according to the molar ratio of 1:1 to form a 50mL deep eutectic solvent, and then add hexahydrate di Nickel chloride, chromium trichloride hexahydrate and ferrous chloride tetrahydrate are prepared deep eutectic solvent electrolyte; wherein the quaternary ammonium salt is benzyltriethylammonium chloride, and the polyhydric alcohol is glycerol; The molar ratio of nickel dichloride hexahydrate, chromium trichloride hexahydrate and ferrous chloride tetrahydrate is 1:6:3;

[0025] Step 2. Use graphite as the anode, and the pretreated substrate (low carbon steel, the pretreatment process is that the substrate is polished with sandpaper, ultrasonicated with acetone, rinsed with distilled water, and dried with cold air) as the cathode, and el...

Embodiment 3

[0027] This deep eutectic solvent electrodeposition prepares the method for stainless steel coating, and its specific steps are as follows:

[0028] Step 1. Under an inert gas environment, firstly mix the quaternary ammonium salt and the polyol with a molar ratio of 1:6 to form a 50mL deep eutectic solvent, and then add hexahydrate di Nickel chloride, chromium trichloride hexahydrate and ferrous chloride tetrahydrate are prepared deep eutectic solvent electrolyte; wherein the quaternary ammonium salt is benzyltriethylammonium chloride, and the polyhydric alcohol is glycerol; The molar ratio of nickel dichloride hexahydrate, chromium trichloride hexahydrate and ferrous chloride tetrahydrate is 1:6:3;

[0029] Step 2. Use lead-tin alloy (lead content is 90wt%, and the rest is tin) as the anode, and the pretreated substrate (aluminum sheet, the pretreatment process is that the substrate is polished with sandpaper, acetone is ultrasonicated, and then rinsed with distilled water an...

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Abstract

The invention relates to an electrodeposition preparation method of a stainless steel coating by means of a deep-eutectic solvent and belongs to the technical field of surface engineering and surfacetreatment. The method comprises the steps that firstly, under an inert gas environment, quaternary ammonium salt and polyhydric alcohol are uniformly mixed to form the deep-eutectic solvent, then nickel dichloride hexahydrate, chromium trichloride hexahydrate and ferrous dichloride tetrahydrate are added into the deep-eutectic solvent, and deep-eutectic solvent electrolyte is obtained through preparation; and secondly, a chromium sheet or an inert electrode serves as an anode, a pretreated substrate serves as a cathode, under the conditions that the temperature of the deep-eutectic solvent electrolyte is controlled to be 50-80 DEG C, the bath voltage is controlled to be 0.6-1.2 V, and the distance between the anode and the cathode is controlled to be 1 cm, the anode and the cathode are subjected to electrodeposition for 30-90 min in the prepared deep-eutectic solvent electrolyte, the cathode substrate subjected to electrodeposition is flushed through acetone and distilled water and then dried, and then the coating containing the component of 304 or 316 stainless steel is obtained on the cathode substrate. The method aims at solving the problems that the existing stainless steel electroplating industry is low in current efficiency, and clean production is difficult to achieve.

Description

technical field [0001] The invention relates to a method for preparing a stainless steel coating by electrodeposition of a deep eutectic solvent, and belongs to the technical field of surface engineering and surface treatment. Background technique [0002] Because stainless steel has good high temperature resistance, mechanical properties and magnetic resistance properties, it is widely used in various fields. At the same time, stainless steel has good corrosion resistance and biocompatibility in corrosive media, making it an ideal choice for the development of inexpensive biological devices. Fe-Cr-Ni has interesting and unique properties, the iron-rich coating has high corrosion resistance and high corrosion resistance, the nickel-rich coating has high light reflectivity and unique magnetic properties, if the chromium content increases, Alloy coating will have high hardness and corrosion resistance etc. The stainless steel coating can be obtained by electrodeposition inst...

Claims

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Application Information

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IPC IPC(8): C25D3/66
CPCC25D3/66
Inventor 徐存英朱啸林华一新唐杰刘海王祥黄梦婷张启波汝娟坚李艳
Owner KUNMING UNIV OF SCI & TECH
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