Impregnation agent for surface modification of nickel base alloy and utilization method of impregnation agent

A technology of surface modification and nickel-based alloy, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., to achieve the effect of easy realization, good bonding force and convenient operation

Active Publication Date: 2017-03-22
BEIFANG UNIV OF NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the technology of preparing high-temperature and corrosion-resistant Cr-Al-Y composite infiltrated layer on the surface of DZ125 nickel-based superalloy by two-step diffusion infiltration method is still blank. The application of superalloys is of great significance

Method used

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  • Impregnation agent for surface modification of nickel base alloy and utilization method of impregnation agent
  • Impregnation agent for surface modification of nickel base alloy and utilization method of impregnation agent
  • Impregnation agent for surface modification of nickel base alloy and utilization method of impregnation agent

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Effect test

Embodiment 1

[0035] Such as figure 1 As shown, the process of adopting the technical solution of the present invention is as follows: 1. Alkali washing: the DZ125 alloy sample is placed in a 65° C. alkali washing liquid for 15 minutes, and the alkali washing liquid is 100 g / L NaOH solution; 2. Water washing: Rinse the sample after alkali washing with running water and dry it; ③ Preparation of penetrating agent: Accurately weigh the penetrating agent according to the amount, and the proportion of Al-Y penetrating agent by weight percentage is: 12% Al, 7% NH 4 Cl (analytically pure), 1% Y 2 o 3 , the balance being Al 2 o 3 ; The proportion of Cr-Y penetration agent is by weight percentage: 15% Cr, 7% NH 4 Cl (analytically pure), 1% Y 2 o 3 , the balance being Al 2 o 3 ; ④ ball milling: place the prepared Al-Y osmotic agent and Cr-Y osmotic agent in a ball mill for grinding, make them fully mixed, and refine the osmotic agent particles; ⑤ drying: place the osmotic agent after ball mil...

Embodiment 2

[0037] Such as figure 1 As shown, the method flow process adopting the technical solution of the present invention is: 1. alkali washing: the DZ125 alloy sample is placed in a temperature of 70 ℃ of alkali washing liquid, soaked for 13min, and the alkali washing liquid is 20g / L Na 3 PO 4 solution; ②Water washing: rinse the sample after alkali washing with flowing water, and dry it; ③Preparation of osmotic agent: accurately weigh the osmotic agent according to the amount, and the proportioning of Al-Y osmotic agent is as follows: 10% Al, 6%NH 4 Cl (analytical pure), 1.5% Y 2 o 3 , the balance being Al 2 o 3 ; The proportion of Cr-Y penetration agent is by weight percentage: 10% Cr, 6% NH 4 Cl (analytical pure), 1.5% Y 2 o 3 , the balance being Al 2 o 3 ; ④ ball milling: place the prepared Al-Y osmotic agent and Cr-Y osmotic agent in a ball mill for grinding, make them fully mixed, and refine the osmotic agent particles; ⑤ drying: place the osmotic agent after ball mil...

Embodiment 3

[0039] Such as figure 1 As shown, the method flow for adopting the technical solution of the present invention is: 1. Alkali washing: the DZ125 alloy sample is placed in an alkali washing solution with a temperature of 80° C., soaked for 10 minutes, and the alkali washing solution is 75 g / L NaOH solution; 2. Water washing: Rinse the sample after alkali washing with running water and dry it; ③ Preparation of penetrating agent: accurately weigh the penetrating agent according to the amount, and the proportion of Al-Y penetrating agent is as follows: 15% Al, 10% NH 4 Cl (analytical pure), 2% Y 2 o 3 , the balance being Al 2 o 3 ; The proportion of Cr-Y penetration agent is by weight percentage: 18% Cr, 10% NH 4 Cl (analytical pure), 2% Y 2 o 3 , the balance being Al 2 o 3 ; ④ ball milling: place the prepared Al-Y osmotic agent and Cr-Y osmotic agent in a ball mill for grinding, make them fully mixed, and refine the osmotic agent particles; ⑤ drying: place the osmotic agen...

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Abstract

The invention relates to an impregnating layer for high temperature resistance and corrosion resistance surface modification of a nickel base alloy, and application of the impregnating layer. An impregnation agent comprises an Al-Y impregnation agent and a Cr-Y impregnation agent, wherein the Al-Y impregnation agent comprises the following components by weight percent: 10% to 15% of Al, 1% to 2% of Y2O3 and 6% to 10% of NH4Cl, and the balance being Al2O3; and the Cr-Y impregnation agent comprises the following components by weight percent: 12% to 18% of Cr, 1% to 2% of Y2O3 and 6% to 10% of NH4Cl, and the balance being Al2O3. A Cr-Al-Y composite impregnating layer can be prepared on the surface of the nickel base alloy through a two-step method by virtue of the impregnation agent, and the corrosion property of the obtained alloy is improved by 3 to 5 times compared with the corrosion property of a matrix alloy.

Description

technical field [0001] The invention relates to surface modification of metal materials, in particular to a nickel-based alloy surface high-temperature-resistant and corrosion-resistant modified infiltrated layer and a use method thereof. Background technique [0002] DZ125 nickel-based alloy is one of the directionally solidified nickel-based superalloys with high performance level in my country at present. It has good medium and high temperature comprehensive properties and excellent thermal fatigue performance, but its thermal corrosion resistance is poor, especially when used in engines. and gas turbine blades, due to its high temperature and large load and Cl - , SO 2 Working in harsh environments such as corrosive media, it is prone to problems such as oxidation, wear and thermal corrosion. [0003] In order to improve the high temperature and corrosion resistance of the alloy, two methods are commonly used: 1) overall alloying, adding various alloying elements, and d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C10/26
CPCC23C10/26
Inventor 李涌泉耿桂宏魏杰刘贵群侯俊峰李轩
Owner BEIFANG UNIV OF NATITIES
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