Surface alloying process of Mg or Mg-alloy product by heating and solid diffusion in furnace

A surface alloying and solid-state diffusion technology, which is applied in the direction of solid-state diffusion coating, metal material coating process, coating, etc., to achieve reasonable process design, simple operation, and the effect of changing the physical and chemical properties of the surface

Inactive Publication Date: 2006-07-12
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the current magnesium alloy surface modification process, and provide a surface modification process method for forming magnesium or magnesium alloy surface area alloying by solid-state diffusion in a furnace

Method used

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  • Surface alloying process of Mg or Mg-alloy product by heating and solid diffusion in furnace
  • Surface alloying process of Mg or Mg-alloy product by heating and solid diffusion in furnace

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Process of preparing metal coating material with aluminum powder to make surface alloy layer of magnesium alloy products

[0051] The specific steps are as follows: see figure 1 .

[0052] a. Carry out surface treatment (such as sandblasting, shot blasting, etc.) to magnesium alloy products to remove surface pollutants, rinse with alcohol, and then dry in the air;

[0053] b. Select aluminum powder with a particle size range of 200 to 320 mesh, use polyvinyl butyral (or dextrin) as a binder, and prepare metal coating materials; polyvinyl butyral (or dextrin) dextrin is about 0.1% of the total aluminum powder;

[0054] c. Apply the prepared metal coating material evenly on the surface of the magnesium alloy product, and the coating thickness is about 0.05mm;

[0055] d. Place the coated magnesium alloy product in the air to dry naturally until the organic solvent evaporates; then,

[0056] e. Place the magnesium alloy product in the furnace to heat the solid-state di...

Embodiment 2

[0060] Process of preparing metal coating material with zinc powder to make surface alloy layer of magnesium alloy products

[0061] The specific steps are as follows: see figure 1 .

[0062] a. Carry out surface treatment (such as sandblasting, shot blasting, etc.) to magnesium alloy products to remove surface pollutants, rinse with alcohol, and then dry in the air;

[0063] b. Select zinc powder with a particle size range of 200-320 mesh, use polyvinyl butyral (or dextrin) as a binder, and prepare metal coating materials; polyvinyl butyral (or dextrin) accounts for about 0.15% of the total powder;

[0064] c. Apply the prepared metal coating material evenly on the surface of the magnesium alloy product, and the coating thickness is about 0.2mm;

[0065] d. Place the coated magnesium alloy product in the air to dry naturally until the organic solvent evaporates;

[0066] e. Place the magnesium alloy product in the furnace to heat the solid-state diffusion. The temperature...

Embodiment 3

[0070] Process of preparing metal coating material with silicon powder to make surface alloy layer of magnesium alloy products

[0071] The specific steps are as follows: see figure 1 .

[0072] a. Carry out surface treatment (such as sandblasting, shot blasting, etc.) to magnesium alloy products to remove surface pollutants, rinse with alcohol, and then dry in the air;

[0073] b. Select silicon powder with a particle size range of 200-320 mesh, use dextrin (or polyvinyl butyral) as a binder, and prepare metal coating materials; dextrin (or polyvinyl butyral) accounts for about 0.2% of the total powder;

[0074] c. Apply the prepared metal coating material evenly on the surface of the magnesium alloy product, and the coating thickness is about 1.0mm;

[0075] d. Place the coated magnesium alloy product in the air to dry naturally until the organic solvent evaporates;

[0076] e. Place the magnesium alloy product in the furnace to heat the solid-state diffusion. The temper...

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Abstract

A process for alloying the surface of Mg or Mg-alloy product includes such steps as proportioning and compounding different metal powders (Al, Si, Zn, etc), then adhering onto the surface of product, and induction heating. The alloyed layer features high anticorrosion and antiwear performances, self-repair function, and not stripping and cracking.

Description

technical field [0001] The invention relates to the surface modification of magnesium or magnesium alloy, in particular to the surface alloying modification technology and process method of magnesium and magnesium alloy by heating and solid-state diffusion in a furnace. Background technique [0002] The specific gravity of magnesium is light, only 1.8g / cm 3 , equivalent to 2 / 3 of aluminum and 1 / 4 of steel. Magnesium alloy has high specific strength and specific stiffness, good thermal and electrical conductivity, and good damping and shock absorption and electromagnetic shielding performance; at the same time, magnesium alloy is easy to process and shape, easy to recycle waste, and has less environmental pollution. It can replace plastic as the shell of electronic devices Body and structural parts to meet the requirements of lightness, thinness, miniaturization and high integration of products, and can also replace steel and aluminum alloy structural parts in the transporta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C10/30
Inventor 马幼平
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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