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Preparing method for high-temperature resistant metal/ceramic composite heating unit material

A ceramic composite and heating element technology, which is applied in the direction of heating element materials, can solve the problems of low heating efficiency and short life of heating element materials, and achieve the effects of high temperature resistance, long life and broad application prospects

Inactive Publication Date: 2014-07-30
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for preparing a high-temperature-resistant metal / ceramic composite heating element material, which solves the problems of low heating efficiency and short service life of the heating element material prepared in the prior art

Method used

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  • Preparing method for high-temperature resistant metal/ceramic composite heating unit material
  • Preparing method for high-temperature resistant metal/ceramic composite heating unit material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Step 1, take Al 2 o 3 30ml of ceramic powder, 5ml of polyvinyl alcohol, 65ml of distilled water, fully mixed, degassed and sieved to obtain Al 2 o 3 Casting slurry; Al 2 o 3 The slurry was cast into sheet-like Al with a thickness of 500 μm 2 o 3 green body;

[0056] Step 2, take 50ml of NiCr alloy powder, 50ml of ethyl cellulose solution, fully mix, vacuum degas and sieve to obtain the NiCr alloy slurry for screen printing; take sheet Al 2 o 3 Green body, the NiCr alloy paste is printed on the sheet Al by a screen printing machine 2 o 3 On the surface of one side of the green body, the shape of the printed NiCr alloy is S-shaped, and the thickness is 200 μm. After drying at 25 ° C, the sheet-type Al 2 o 3 / NiCr composite green body;

[0057] Step 3, the flake Al 2 o 3 / NiCr composite green bodies are laminated in the order that the side with the printed NiCr shape faces up, the number of laminated layers is 2 layers, and a layer of sheet Al is placed on th...

Embodiment 2

[0062] Step 1, take ZrO 2 Ceramic powder 35ml, carboxymethyl cellulose 8ml, distilled water 57ml, fully mixed, vacuum degassed and sieved to obtain ZrO 2 Casting slurry; the ZrO 2 The slurry was cast into sheet-like ZrO with a thickness of 400 μm 2 green body;

[0063] Step 2, take Ni powder 70ml, castor oil and rosin turpentine mixture 30ml, vacuum degass and sieve after fully mixing, obtain the Ni slurry for screen printing; Take sheet ZrO 2 Green body, the Ni paste is printed on the sheet ZrO by a screen printing machine 2 On the surface of one side of the green body, the printed Ni is in the shape of a mesh, with a thickness of 50 μm, and after drying at 40 ° C, the sheet ZrO 2 / Ni composite green body;

[0064] Step 3, the chip ZrO 2 / Ni composite green bodies are stacked in the order that the side with the Ni shape printed on them faces up, the number of stacks is 3 layers, and a layer of sheet ZrO is placed on the top layer. 2 The green body is then heat-sealed i...

Embodiment 3

[0069] Step 1, take SiO 2 40ml of ceramic powder, 12ml of polyvinyl alcohol, 48ml of distilled water, fully mixed, vacuum degassed and sieved to obtain SiO 2 Casting slurry; SiO 2 The slurry was cast into sheet SiO with a thickness of 600 μm 2 green body;

[0070] Take 30ml of molybdenum-manganese alloy powder and 70ml of terpineol, mix well, vacuum degas and sieve to obtain molybdenum-manganese alloy slurry for screen printing; take sheet SiO 2 Green body, the molybdenum-manganese alloy paste is printed on the sheet SiO by a screen printing machine 2 On the surface of one side of the green body, the shape of the printed molybdenum-manganese alloy is S-shaped, with a thickness of 100 μm. After drying at 50 ° C, the sheet SiO 2 / Molybdenum-manganese composite green body;

[0071] Step 3, the chip SiO 2 / Molybdenum-manganese composite green bodies are stacked in order with the side printed with the shape of molybdenum-manganese facing up, the number of stacks is 4 layers, ...

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Abstract

The invention discloses a preparing method for a high-temperature resistant metal / ceramic composite heating unit material. The preparing method comprises the following steps that ceramic tape-casting paste is prepared and cast into a plate type ceramic blank in a tape mode; metal paste for silk-screen printing is prepared, and a plate type composite blank is prepared through silk-screen printing; laminating and heat sealing are carried out to obtain a plate type heating unit material blank; low-temperature tape casting and freeze drying are carried out to obtain a composite heating unit material prefabrication body; sintering is carried out to obtain a composite heating unit material; finally the high-temperature resistant metal / ceramic composite heating unit material is obtained through an impregnation method. The preparing method for the high-temperature resistant metal / ceramic composite heating unit material solves the problems that a heating unit material prepared through equipment in the prior art is low in heating efficiency, short in service life and the like, and the material is resistant to high temperature, high in heating efficiency and long in service life, and has wide application prospects in the fields of internal combustion engine air inlet heating manifolds, carburetors, infrared heat sources, igniters, engine glow plugs, solid oxide fuel cells and the like.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a preparation method of a high-temperature-resistant metal / ceramic composite heating element material. Background technique [0002] The heating element material is a material that converts electrical energy into heat energy, and is currently widely used in various heating equipment and electrical appliances. The most widely used heating element material is alloy wire heating material, but this type of material has disadvantages such as easy oxidation at high temperature, short life, unsafe open flame, low thermal efficiency, and uneven heating. Later, relevant researchers invented the PTC ceramic heating element material, and at the same time used U-shaped corrugated heat sinks to improve its heat dissipation rate, and combined the advantages of adhesive and mechanical, but the heating temperature of PTC electric heating elements is generally b...

Claims

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Application Information

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IPC IPC(8): H05B3/10
Inventor 赵康汤玉斐徐雷胡龙
Owner XIAN UNIV OF TECH
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