Preparation method for vacuum mechanical energy aided diffusing zinc-aluminum-chromium alloy layer

An aluminum-chromium alloy, mechanical energy technology, applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problem of insignificant performance improvement, and achieve the effect of improved corrosion resistance and tight combination

Inactive Publication Date: 2017-08-18
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, mechanical energy assisted zinc-aluminum coating has been studied, and in the existing research, the structure of the zinc-aluminum coating is similar to that of the zinc coating, and the phase of the coating is mainly FeZn 4 ,Compared with mechanical energy assisted sherardizing, the performance improvement is not significant

Method used

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  • Preparation method for vacuum mechanical energy aided diffusing zinc-aluminum-chromium alloy layer
  • Preparation method for vacuum mechanical energy aided diffusing zinc-aluminum-chromium alloy layer
  • Preparation method for vacuum mechanical energy aided diffusing zinc-aluminum-chromium alloy layer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In order to meet and adapt to the requirements of general industrial production, the general low-carbon steel 20 steel was used as the metal matrix material in this experiment, and it was processed into specifications of 15mm×15mm×3mm by wire cutting machine.

[0033] (1) Grind 20 steel in turn (400# to 2000# sandpaper, then clean it with water and absolute ethanol in turn), alkali cleaning (use an alcohol lamp to heat 15% NaOH solution to 80-90°C , and then put the polished sample into the solution for alkaline washing for 4-5min, then take it out and clean it with clean water), pickling treatment (put the sample after alkaline washing treatment into 15% HCl solution for pickling for 2- 3min, then take it out, clean it with clean water and absolute ethanol in turn), dry it (dry the sample after pickling treatment with cold air), and put it in a drying box for later use.

[0034] (2) Weigh the co-penetration agent powder in the following percentages by weight: 3% zinc p...

Embodiment 2

[0042] In order to meet and adapt to the requirements of general industrial production, the general low-carbon steel 20 steel was used as the metal matrix material in this experiment, and it was processed into specifications of 15mm×15mm×3mm by wire cutting machine.

[0043](1) Grind 20 steel in turn (400# to 2000# sandpaper, then clean it with water and absolute ethanol in turn), alkali cleaning (use an alcohol lamp to heat 15% NaOH solution to 80-90°C , and then put the polished sample into the solution for alkaline washing for 4-5min, then take it out and clean it with clean water), pickling treatment (put the sample after alkaline washing treatment into 15% HCl solution for pickling for 2- 3min, then take it out, clean it with clean water and absolute ethanol in turn), dry it (dry the sample after pickling treatment with cold air), and put it in a drying box for later use.

[0044] (2) Weigh the co-infiltration agent powder in the following percentages by weight: 10% zinc ...

Embodiment 3

[0052] In order to meet and adapt to the requirements of general industrial production, the general low-carbon steel 20 steel was used as the metal matrix material in this experiment, and it was processed into specifications of 15mm×15mm×3mm by wire cutting machine.

[0053] (1) Grind 20 steel in turn (400# to 2000# sandpaper, then clean it with water and absolute ethanol in turn), alkali cleaning (use an alcohol lamp to heat 15% NaOH solution to 80-90°C , and then put the polished sample into the solution for alkaline washing for 4-5min, then take it out and clean it with clean water), pickling treatment (put the sample after alkaline washing treatment into 15% HCl solution for pickling for 2- 3min, then take it out, clean it with clean water and absolute ethanol in turn), dry it (dry the sample after pickling treatment with cold air), and put it in a drying box for later use.

[0054] (2) Weigh the co-penetrating agent powder in the following weight percentages in proportion...

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Abstract

The invention belongs to the field of mechanical energy aided diffusing, and particularly relates to a vacuum mechanical energy aided diffusing zinc-aluminum-chromium alloy layer and a preparation method thereof. By adding chromium into co-diffusion agent, the organizational structure of an existing mechanical energy aided diffusing zinc-aluminum co-diffusion layer is changed. Chromium is an element which has a great effect on the organizational structure of steel, because of the existence of the chromium, the organizational growth of a zinc-aluminum layer is changed, and the mechanical energy aided diffusing zinc-aluminum co-diffusion layer which is similar to a mechanical energy aided diffusing zinc layer in organization is changed to a multi-layer co-diffusion layer organization; and the combination is closer and firmer, and the oxidation resistance and the corrosion resistance of materials are improved prominently. Chromium exists in a diffusion layer in a solid solution manner, and plays a role of solid-solution strengthening.

Description

technical field [0001] The invention belongs to the field of mechanical energy assisted infiltration, in particular to a vacuum mechanical energy assisted infiltration zinc-aluminum-chromium alloy layer and a preparation method thereof. Background technique [0002] Mechanical energy infiltration is a new surface treatment technology first developed in my country in the 1990s. It uses moving powder particles to impact the surface of the heated workpiece, and the movement (mechanical energy) of the particles activates the surface lattice atoms to form vacancies, which reduces the activation energy of diffusion, and changes the lattice diffusion of pure thermal diffusion into lattice defect diffusion. Therefore, the diffusion temperature is greatly reduced, the diffusion time is shortened, the energy saving effect is very significant, and the product quality is improved. In the research of mechanical energy assisted infiltration, various assisted infiltration processes includ...

Claims

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Application Information

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IPC IPC(8): C23C10/56C23C10/02
CPCC23C10/56C23C10/02
Inventor 苏旭平何祖新刘亚涂浩吴长军彭浩平
Owner CHANGZHOU UNIV
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