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Multicomponent alloy co-permeation anticorrosive coating on surface of steel and co-permeation method thereof

A technology of anti-corrosion layer and steel, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problem of no zinc-nickel light rare earth multi-element alloy, etc., and achieve strong corrosion resistance, high cost performance, and anti-corrosion performance excellent effect

Active Publication Date: 2014-04-16
安徽瑞合铁路紧固件科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no patents and research reports related to co-infiltration of zinc-nickel light rare earth multi-element alloys in China.

Method used

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  • Multicomponent alloy co-permeation anticorrosive coating on surface of steel and co-permeation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 100g zinc powder, 10g nickel powder, 2.5g La 2 o 3 , 2.5g Ce 2 o 3 Mix evenly to prepare multi-element alloy powder. Mix the multi-element alloy powder and 200g of quartz sand with a particle size of 80 mesh evenly and place it in the co-infiltration furnace for heating at 180°C for 2 hours. After cooling down to 60°C, remove it from the co-infiltration furnace.

[0026] The pretreated mixture, 0.2g NH 4 Add Cl and clean steel parts into the co-infiltration furnace, co-infiltrate at 400°C for 2 hours, and control the pressure at 0.1MPa to form a multi-component alloy co-infiltration layer with a certain thickness and excellent anti-corrosion performance on the surface of the metal substrate. Its main properties The results are shown in Table 1.

Embodiment 2

[0028] 100g zinc powder, 10g nickel powder, 2.5g La 2 o 3 , 2.5g Nd 2 o 3 Mix evenly to prepare multi-element alloy powder. Mix the multi-element alloy powder and 200g of quartz sand with a particle size of 80 mesh evenly and place it in the co-infiltration furnace for heating at 180°C for 2 hours. After cooling down to 60°C, remove it from the co-infiltration furnace.

[0029] The pretreated mixture, 0.2g NH 4 Add Cl and clean steel parts into the co-infiltration furnace, co-infiltrate at 400°C for 2 hours, and control the pressure at 0.1MPa to form a multi-component alloy co-infiltration layer with a certain thickness and excellent anti-corrosion performance on the surface of the metal substrate. Its main properties The results are shown in Table 1.

Embodiment 3

[0031] 100g zinc powder, 15g nickel powder, 2.5g Ce 2 o 3 , 2.5g Nd 2 o 3 Mix evenly to prepare multi-element alloy powder. Mix the multi-element alloy powder and 200g of quartz sand with a particle size of 80 mesh evenly and place it in the co-infiltration furnace for heating at 200°C for 2 hours. After cooling down to 60°C, remove it from the co-infiltration furnace.

[0032] The pretreated mixture, 0.2g NH 4 Add Cl and clean steel parts into the co-infiltration furnace, co-infiltrate at 400°C for 2 hours, and control the pressure at 0.1MPa to form a multi-component alloy co-infiltration layer with a certain thickness and excellent anti-corrosion performance on the surface of the metal substrate. Its main properties The results are shown in Table 1.

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Abstract

The invention discloses a multicomponent alloy co-permeation anticorrosive coating on the surface of steel. A preparation method of the coating comprises the following steps of carrying out co-permeation treatment on a clean steel part under the action of a dispersant (quartz sand) and a permeation promoter (NH4Cl or H2NCONH2) in a co-permeation furnace at the temperature of 400-460 DEG C and under the pressure of 0.08-0.15MP by using multicomponent alloy power so as to form a Zn-Ni light rare earth multicomponent alloy co-permeation coating with a certain thickness and excellent anticorrosive performance on the surface of the steel, wherein the multicomponent alloy power is formed by mixing 100 parts of zinc powder, 10-20 parts of nickel powder and 5-10 parts of a light rare earth oxide (La2O3, Ce2O3 or Nd2O3); the thickness of the co-permeation coating is between 90 micrometers and 110 micrometers; the hardness of the co-permeation coating is greater than 330Hv; the neutral salt spray resisting time (red rust does not appear) is greater than 720 hours.

Description

1. Technical field [0001] The invention relates to a metal surface anticorrosion treatment method, in particular to a steel surface anticorrosion treatment method, in particular to a zinc-nickel light rare earth multi-element alloy co-infiltration anticorrosion layer on the steel surface and a co-infiltration method. 2. Background technology [0002] Corrosion and rust are the natural enemies of steel materials. It is estimated that about one-tenth of the world's steel output is lost to corrosion and rust. The economic loss caused by corrosion to my country is at least 40 billion yuan per year. At present, most electro-galvanizing and hot-dip galvanizing plants in more developed regions have been gradually closed, stopped, merged, transferred or rectified. For existing factories, the government also requires them to pay attention to environmental protection, actively control pollution, and meet emission standards. But none of these measures can fundamentally solve the "th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C10/52B22F1/00
Inventor 王华林谭麟谭育远孔令妹王继植范祚玉
Owner 安徽瑞合铁路紧固件科技有限公司
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