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Preparation method of chromium-alloy foamed metal

A technology of metal foam and chrome alloy, which is applied in the field of preparation of chromium alloy metal foam, can solve the problems of great harm to the environment and operators, uneven metallographic structure, product thickness limitation, etc., and achieve scientific and reasonable preparation methods, thickness and pore size The effect of large range and low consumption of raw materials

Inactive Publication Date: 2015-06-03
吉林市卓尔新型金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing chromium alloy metal foam preparation method is to adopt nickel foam and alloy composite plate high temperature and corrosion resistant particles, or thermal spraying aluminum or high temperature and corrosion resistant metal, and finally use metal chromium infiltration process to complete, its shortcomings Yes: The thickness of the product is limited, and those with smaller apertures cannot be manufactured
The metallographic structure is uneven, and the chromium content outside and inside the wire diameter is very different, which greatly affects its performance, and the material consumption is large, the energy consumption is large, and it is harmful to the environment and operators.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, the preparation method of the chromium alloy metal foam of embodiment it comprises the following steps:

[0018] 1) Material selection: Polyurethane fully through-hole sponge porous foam material is selected, and its technical parameters are: through-hole rate ≥ 98%, bulk density 28-30kg / m 3 , with the same pore size;

[0019] 2) Chemical degreasing: chemically degreasing the porous foam material in step 1) with sodium hydroxide 80g / L at a degreasing temperature of 30°C for 5 minutes;

[0020] 3) Hot water washing: Rinse the porous foam material chemically degreased in step 2) twice in flowing hot water at a temperature of 60°C;

[0021] 4) Cold water washing: Rinse the porous material washed with hot water in step 3) twice in cold water at a temperature of 5-20°C, and dehydrate and dry;

[0022] 5) Impregnated nano-graphite chromium powder mixed conductive adhesive: Prepare nano-chromium powder conductive adhesive mixed slurry according to the mass rati...

Embodiment 2

[0028] Embodiment 2: the preparation method of the chromium alloy metal foam of embodiment 2 is the same as the steps 1), 3), 4) and 7)-10) of the preparation method of the chromium alloy metal foam of embodiment 1, the difference is :

[0029] 2) Chemical degreasing: chemically degreasing the porous foam material in step 1) with sodium hydroxide 90g / L at a degreasing temperature of 35°C for 5 minutes;

[0030] 5) Impregnated nano graphite chromium powder mixed conductive adhesive: prepare nano chromium powder conductive adhesive mixed slurry according to the mass ratio, 1 part of chromium powder with a particle size of 25nm, 5 parts of conductive adhesive, the solid content of conductive adhesive is 10%, PH: 10-11, the power viscose Pa.S is 19, fully stir the prepared nano-chromium powder conductive adhesive mixed slurry with a high-speed disperser at 8000 rpm for 15 minutes, and step 4) dehydrated and dried porous The material is immersed in the mixed slurry of nano-chromiu...

Embodiment 3

[0032] Embodiment 3: the preparation method of the chromium alloy metal foam of embodiment 3 is the same as the steps 1), 3), 4) and 7)-10) of the preparation method of the chromium alloy metal foam of embodiment 1, the difference is :

[0033] 2) Chemical degreasing: chemically degreasing the porous foam material in step 1) with sodium hydroxide 100g / L at a degreasing temperature of 40°C for 5 minutes;

[0034] 5) Impregnated nano-graphite chromium powder mixed conductive adhesive: prepare nano-chromium powder conductive adhesive mixed slurry according to the mass ratio, 1 part of chromium powder with a particle size of 30nm, 5 parts of conductive adhesive, solid content of conductive adhesive 11%, PH: 10-11, the power viscose Pa.S is 20, and the prepared nano-chromium powder conductive adhesive mixed slurry is fully stirred with a high-speed disperser at 8000 rpm for 15 minutes, and the dehydrated and dried porous The material is immersed in the mixed slurry of nano-chromi...

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Abstract

The invention discloses a preparation method of chromium-alloy foamed metal. The preparation method is characterized by the following steps of: selecting materials; chemically degreasing; washing in hot water; washing in cold water; leaching nanometer graphite chromium powder mixed conductive glue; electrically coating a nanometer Al2O3 and nickel composite depositing layer; washing in cold water; drying in air; oxidizing and reducing; leaching ammonium chloride and chromium; and diffusing at high temperature and the like to prepare the chromium-alloy foamed metal product. The preparation method of the chromium-alloy foamed metal has the advantages of being scientific and reasonable, easy to operate, small in raw material consumption, low in cost, free of pollution and the like. The chromium-alloy foamed metal prepared by the preparation method disclosed by the invention is large in thickness and pore diameter range, has a structure the same as that of the polyurethane foam, a large specific surface area, large specific strength, a stable gold-phase structure, good heat resistance and good corrosion resistance and is extensive in application field.

Description

technical field [0001] The invention relates to a preparation method of an alloy material, which is a preparation method of a chromium alloy foam metal. Background technique [0002] Existing chromium alloy metal foam preparation method is to adopt nickel foam and alloy composite plate high temperature and corrosion resistant particles, or thermal spraying aluminum or high temperature and corrosion resistant metal, and finally use metal chromium infiltration process to complete, its shortcomings Yes: The thickness of the product is limited, and those with smaller apertures cannot be manufactured. The metallographic structure is uneven, and the chromium content outside and inside the wire diameter is very different, which greatly affects its performance, and the material consumption is large, the energy consumption is large, and it is harmful to the environment and operators. Contents of the invention [0003] The object of the present invention is to provide a method for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D1/08C22C1/08
Inventor 辛长军边树华
Owner 吉林市卓尔新型金属材料有限公司
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