Method for electroplating Ni-Cr-PTFE composite coating in ionic liquid

A composite coating, ionic liquid technology, used in coatings, electrolytic coatings, etc., can solve the problems that metal coatings cannot meet surface hardness, wear resistance, corrosion resistance, electrical conductivity and self-lubrication, and achieve uniform distribution of PTFE. , The effect of friction reduction and hardness improvement, and easy availability of raw materials

Inactive Publication Date: 2016-08-17
ANQING NORMAL UNIV
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Problems solved by technology

[0002] With the development of modern surface technology and the improvement of the surface performance requirements of various industrial sectors, traditional metal coatings ar

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  • Method for electroplating Ni-Cr-PTFE composite coating in ionic liquid
  • Method for electroplating Ni-Cr-PTFE composite coating in ionic liquid

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Embodiment Construction

[0014] The present invention will be further described below in combination with specific embodiments.

[0015] Step 1. In an inert gas environment, first take 300mL of anhydrous mixed solvent of 1-ethyl-3-methylimidazolium chloride (EMIMCl) and ethylene glycol (EG) with a molar ratio of 1:2 and put it into a self-made electrolytic cell , and then add 16 grams of nickel-containing ionic liquid [EMIM]NiCl to the anhydrous mixed solvent 3 , 18 grams of chromium-containing ionic liquid [EMIM]CrCl 4 , 2gLiCl, 12gPTFE and 6mL of dodecyl dimethyl amine oxide (OB-2), mechanically stirred and ultrasonically stirred for 10h to mix evenly to obtain an electroplating solution;

[0016] Step 2, as attached figure 1 As shown, the copper substrate is subjected to pretreatment processes such as alkaline degreasing, pickling, water washing, and drying as the cathode, and the platinum sheet as the anode. Put the cathode and anode into the electroplating solution obtained in step 1, and keep ...

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Abstract

The invention discloses a method for electroplating a Ni-Cr-PTFE composite coating in ionic liquid. In a non-water system and an inert-gas atmosphere, [BMIM]NiCl3 liquid containing nickel ions, [BMIM]CrCl4 liquid containing chromium ions, LiCl, PTFE and N,N-dimethyldodecylamine oxide (OB-2) are added into a certain amount of mixed solvent of 1-ethyl-3-methylimidazolium chlorine (EMIMCI) and ethylene glycol (EG), mechanical stirring and ultrasonic wave stirring are conducted for a certain time until the mixture is mixed evenly, and electroplate liquid is obtained; a cathode electrode and an anode electrode are placed into an electroplating bath, a certain space between the electrodes, temperature, impulse frequency, pulse duty factor, deposition period and average current density are kept, pulse electroplating is conducted at a certain stirring speed, and after electroplating, washing and drying are conducted, and the Ni-Cr-PTFE composite coating is obtained, wherein a pretreated matrix serves as the cathode electrode, and a platinum sheet or graphite serves as the anode electrode. Due to the fact that the PTFE and Cr are added, the antifriction performance and hardness of the coating are obviously improved, the process procedure is simple, the equipment investment is low, and the method is environmentally friendly and economical.

Description

technical field [0001] The invention relates to an ionic liquid electroplating method for Ni-Cr-PTFE, in particular to a method for preparing a Ni-Cr-PTFE composite coating by utilizing the ionic liquid electroplating technology. Background technique [0002] With the development of modern surface technology and the improvement of the surface performance requirements of various industrial sectors, traditional metal coatings are increasingly unable to meet the requirements of surface hardness, wear resistance, corrosion resistance, electrical conductivity and self-lubricating properties. requirements. Therefore, composite materials organized in various forms have been vigorously developed. Since the self-lubrication, wear resistance and corrosion resistance of composite coatings are significantly better than traditional metal surface coatings, a lot of research has been done on composite coatings prepared by doping solid inert particles in traditional plating solutions at ho...

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Application Information

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IPC IPC(8): C25D3/66C25D5/18C25D15/00
CPCC25D3/665C25D5/18C25D15/00
Inventor 杜荣斌刘涛夏宏宇孔学军王钧伟
Owner ANQING NORMAL UNIV
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