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Laser nanocrystallization method of Ni-W-P and Ni-P dual-alloy coating

A double-alloy, nano-technology, applied in metal material coating technology, coating, liquid chemical plating, etc., can solve the problems of mechanical performance reduction, loss of double coating meaning, single coating is not ideal, etc., to improve surface performance , Improve the effect of binding force

Inactive Publication Date: 2014-12-24
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To effectively improve the metal surface properties, a single coating is not ideal
However, when Ni-P and Ni-W-P double alloy coatings are prepared and crystallized by high temperature annealing, the significance of double coatings may be lost due to the diffusion of atoms
In addition, high-temperature annealing of heat-sensitive substrates may also greatly reduce their mechanical properties due to changes in their microstructure

Method used

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  • Laser nanocrystallization method of Ni-W-P and Ni-P dual-alloy coating
  • Laser nanocrystallization method of Ni-W-P and Ni-P dual-alloy coating
  • Laser nanocrystallization method of Ni-W-P and Ni-P dual-alloy coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Preparation of Ni-W-P and Ni-P dual alloy coatings by chemical deposition

[0033] (1) Composition of plating solution

[0034] Each liter of Ni-P plating solution contains: 20 g of nickel sulfate, 24 g of sodium hypophosphite, 10 g of sodium citrate, 0.002 g of cadmium sulfate, 13 ml of lactic acid, and 0.003 g of cerium trichloride;

[0035] Each liter of Ni-W-P plating solution contains: 23 g of nickel sulfate, 19 g of sodium hypophosphite, 17 g of sodium citrate, 7 g of citric acid, 15 g of ammonium chloride, 10 g of sodium tungstate, and 0.003 g of cerium trichloride .

[0036] (2) Substrate plating process

[0037] Cleaning treatment before plating: use vortex flow chemistry combined with one-time degreasing and rust removal, that is, place the base material in the degreasing and derusting agent (preparation of 1 liter of degreasing and rust removing agent requires allyl alcohol polyoxyalkyl ether 10ml, 25g of sodium pyrophosphate, 5ml of triethanolamine, 10...

Embodiment 2

[0064] 1. Preparation of Ni-W-P and Ni-P dual alloy coatings by chemical deposition

[0065] (1) Composition of plating solution

[0066] Each liter of Ni-P plating solution contains: 25 g of nickel sulfate, 20 g of sodium hypophosphite, 6 g of sodium citrate, 0.004 g of cadmium sulfate, 11 ml of lactic acid, and 0.008 g of cerium trichloride;

[0067] Each liter of Ni-W-P plating solution contains: nickel sulfate 19 g, sodium hypophosphite 22 g, sodium citrate 18 g, citric acid 9 g, ammonium chloride 13 g, sodium tungstate 4 g, cerium trichloride 0.008 g.

[0068] (2) Substrate plating process

[0069] To prepare 1 liter of degreasing and rust removing agents, you need 1ml of allyl alcohol polyoxyalkyl ether, 12g of sodium pyrophosphate, 6ml of triethanolamine, 1g of alkyl phosphate, 20g of sodium metasilicate, 2ml of butyl cellosolve, and 0.05g of sodium benzoate It is made by adding water; to prepare 1 liter of acidic activation solution, 20g of oxalic acid, 5ml of phosp...

Embodiment 3

[0073] 1. Preparation of Ni-W-P and Ni-P dual alloy coatings by chemical deposition

[0074] (1) Composition of plating solution

[0075] Each liter of Ni-P plating solution contains: 22 g of nickel sulfate, 22 g of sodium hypophosphite, 8 g of sodium citrate, 0.003 g of cadmium sulfate, 15 ml of lactic acid, and 0.006 g of cerium trichloride;

[0076] Each liter of Ni-W-P plating solution contains: nickel sulfate 21 g, sodium hypophosphite 20 g, sodium citrate 15 g, citric acid 8 g, ammonium chloride 14 g, sodium tungstate 7 g, cerium trichloride 0.006 g.

[0077] (2) Substrate plating process

[0078] Cleaning before plating: 5ml of allyl alcohol polyoxyalkyl ether, 19g of sodium pyrophosphate, 1ml of triethanolamine, 5g of alkyl phosphate, 10g of sodium metasilicate, and 1.2 ml, 0.09g of sodium benzoate and water; to prepare 1 liter of acid activation solution, 15g of oxalic acid, 10ml of phosphoric acid, 1g of ammonium bifluoride, 15ml of hydrogen peroxide, 1.3g of sodi...

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Abstract

The invention belongs to metal surface modification in industrial production, and in particular relates to a laser nanocrystallization method of a Ni-W-P and Ni-P dual-alloy coating. The laser nanocrystallization method of the Ni-W-P and Ni-P dual-alloy coating is characterized by comprising the following steps of: 1, carrying out chemical precipitation to obtain a Ni-W-P and Ni-P dual-alloy coating; and 2, carrying out laser induction to obtain a Ni-W-P and Ni-P nanocrystallized dual-alloy coating. According to the method, laser induction dual-coating crystallization is carried out directly in air to prepare a nanocrystalline material, thus the maneuverability is provided for the practical production, more importantly, the obtained nanocrystallized dual-alloy coating has texture characteristics such as specific grain size and crystallization degree, so that the bonding force of the coating with a metal matrix can be improved, and the property of the matrix is not influenced, and therefore, respective advantages of different coatings are given a full play, and surface properties of the material are greatly improved.

Description

(1) Technical field [0001] The invention belongs to metal surface modification in industrial production, in particular to a method for laser nanometerization of Ni-W-P and Ni-P double alloy coatings. (2) Background technology [0002] The annealing and crystallization of chemically deposited Ni-P based alloys is a method for preparing nanocrystalline materials. The good wear resistance and corrosion resistance of the formed nanocrystalline coatings mostly appear at relatively high temperatures. Among them, the annealed Ni-W-P alloy coating exhibits better wear resistance and corrosion resistance than Ni-P alloy coating, but the bonding force between Ni-P coating and metal substrate is higher than that of Ni-W-P coating. To effectively improve the metal surface properties, a single coating is not ideal. However, when Ni-P and Ni-W-P double alloy coatings are prepared and crystallized by high temperature annealing, the meaning of double coatings may be lost due to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36C23C18/50
Inventor 刘宏郭荣新
Owner QILU UNIV OF TECH