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Process of preparing nanometer antiwear composite coating on surface of metal base

A nanocomposite coating and metal matrix technology, applied in the direction of metal material coating process, coating, liquid chemical plating, etc., can solve the problem that adding nanoparticles is not suitable for quenching + low temperature tempering plating, etc., to achieve surface hardness Improvement, easy implementation, and high work efficiency

Inactive Publication Date: 2007-08-22
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the disadvantages of adding nano particles in the existing chemical plating solution that are not suitable for plating of quenched + low temperature tempered materials, the present invention provides a wear-resistant nanocomposite on the surface of metal substrates that is also suitable for quenched + low temperature tempered materials. coating method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment one: on the metal substrate that material is 45 steels, obtain wear-resistant nano-alumina composite coating (without carrying out surface laser heat treatment), concrete steps are as follows:

[0031] (1), select the metal matrix of 45 steels for use, the metal matrix is ​​carried out surface cleaning, wash; (2), select nano-alumina powder as reinforcing body; (3), use polyethylene glycol 2000 as chemical reagent, to The nano-alumina powder in the step (2) is subjected to surface chemical treatment, and the described surface chemical treatment is as follows: first, polyethylene glycol is formulated into a 15wt% aqueous solution, and after fully dissolving, then the nano-alumina, polyethylene glycol Add nano-alumina to the aqueous solution of polyethylene glycol at a ratio of 1:10 to alcohol, and finally carry out ultrasonic dispersion treatment for 60 minutes (frequency 20-25Hz, ultrasonic power 100W, note: the ultrasonic generator used is marked as A range,...

Embodiment 2

[0032]Embodiment 2: Obtain wear-resistant nano-silicon carbide composite coating on the metal matrix that material is 45 steels, concrete steps are as follows:

[0033] (1), select the metal substrate of 45 steel, carry out surface cleaning, wash the metal substrate; (2), select the nano-silicon carbide powder as reinforcement; (3), use quaternary ammonium salt type cationic surfactant (bromine cetyltrimethylamine) as a chemical reagent, the reinforcing body in step (2) is carried out surface chemical treatment, and described surface chemical treatment is: at first cetyltrimethylamine bromide is mixed with the aqueous solution of 30wt% , after fully dissolving, add nano-silicon carbide in the aqueous solution of cetyltrimethylamine bromide according to the mass ratio of nano-silicon carbide powder and cetyltrimethylamine bromide as 1:60, and finally carry out ultrasonic dispersion Treat for 60 minutes (frequency 20~25Hz, ultrasonic power is 120W) to get the strengthening body ...

Embodiment 3

[0034] Embodiment 3: Obtain wear-resistant nano-silicon carbide composite coating on the metal substrate that material is 45 steels, concrete steps are as follows:

[0035] (1), select the metal matrix of 45 steels for use, the metal matrix is ​​carried out surface cleaning, wash; (2), select nano-titanium carbide powder as reinforcing body; (3), use sulfonate type anionic surfactant (ten Sodium dialkylbenzene sulfonate) as a chemical reagent, the nano-titanium carbide powder in step (2) is carried out surface chemical treatment, and described surface chemical treatment is: at first sodium dodecylbenzene sulfonate is mixed with 10wt % aqueous solution, after fully dissolving, add nano-titanium carbide powder in the aqueous solution of sodium dodecylbenzene sulfonate according to the ratio of nano-titanium carbide: sodium dodecylbenzene sulfonate to 1:30, and finally perform ultrasonic Disperse treatment for 80 minutes (frequency 20-25Hz, ultrasonic power 150W) to obtain the st...

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Abstract

The process of preparing nanometer antiwear composite coating on the surface of metal base includes the following steps: 1. cleaning the surface of the metal base; 2. selecting one kind of the nanometer powder or the composition as the reinforcing body; 3. surface chemical treatment of the reinforcing body with chemical reagent; 4. adding the reinforcing body treating liquid into acid chemical nickel coating liquid as the base coating liquid; 5. immersing the metal base in the composite coating liquid while stirring to complete chemical coating; 6. water washing and drying the coated metal base; and 7. surface laser heat treatment of metal base. The present invention combines nanometer technology, chemical coating technology and laser heat treatment technology organically, and is simple, efficient, feasible and suitable for use in various kinds of metal material and product.

Description

(1) Technical field [0001] The invention belongs to the technical field of metal surface treatment, and specifically relates to a method for preparing a wear-resistant nanometer composite coating on the surface of a metal substrate by combining high-energy laser and chemical composite plating technology. (2) Background technology [0002] Electroless plating is widely used because it does not require a power source and has good uniformity. It can be plated on both metals and non-metals. The coating has high hardness and good corrosion resistance. In order to further improve the hardness of the coating, particles such as diamond, silicon carbide or graphite are added to the chemical plating solution to co-deposit with metal particles, thus forming a chemical composite plating technology. [0003] The development of nanotechnology has also been applied to chemical composite plating. When nanoparticles are added to the electroless plating solution, the degree of recombination ...

Claims

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Application Information

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IPC IPC(8): C23F17/00C23C18/32C21D1/09
Inventor 姚建华孔凡志楼程华顿爱欢
Owner ZHEJIANG UNIV OF TECH
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