Preparation method of laser cladding high-temperature-resistant anti-oxidation coating

An anti-oxidation coating and laser cladding technology, applied in clay products, applications, household appliances, etc., can solve the problems of oxidation, evacuation, and the structure is not dense enough, and achieve dense organization, less microscopic defects, and improved working conditions. Effect

Inactive Publication Date: 2016-03-30
雷春生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the current problem that the internal structure of the high-temperature resistant coating is relatively loose, and the structure is not dense enough to easily oxidize under the action of high temperature, it provides a super coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1

[0016] First take the kaolin and use a high-pressure roller to crush it into 180 mesh kaolin powder. The kaolin powder is mixed with water to form a kaolin slurry with a solid weight of 80%. Then 18 parts of quartz stone and 22 parts of CaCO are selected based on parts by weight. 3 , 5 parts of MgCO 3 , 25 parts of titania, 25 parts of zircon and 5 parts of alumina, were rolled and sieved to prepare a 120 mesh mixed inorganic powder; the mixed inorganic powder prepared above and the kaolin slurry were stirred and mixed at a mass ratio of 1:3 30min, then place it in an oven at 80℃ to dry for 10h, take it out and sieving it again to prepare an ultrafine inorganic powder of 200 mesh; the ultrafine inorganic powder prepared above and anhydrous ethanol Stir and mix for 10 minutes with a mass ratio of 1:5, then add 12-hydroxystearic acid according to 1% of the total mass, stir to uniformly disperse the inorganic powder, and add absolute ethanol until the solid content...

Example Embodiment

[0017] Example 2

[0018] First, take the kaolin and crush it into 190 mesh kaolin powder with a high-pressure roller. The kaolin powder is mixed with water to form a kaolin slurry with a solid weight of 80%. Then, by weight, 19 parts of quartz stone and 21 parts of CaCO3 are selected. , 2 parts of MgCO3, 28 parts of titanium dioxide, 27 parts of zircon and 3 parts of alumina, which are rolled and sieved to prepare a 145 mesh mixed inorganic powder; the above-prepared mixed inorganic powder and kaolin slurry are in mass ratio 1:3 stirring and mixing for 35 minutes, and then placing it in an oven at 85°C for 11 hours, taking it out and rolling it through a sieve again to prepare a 250 mesh superfine inorganic powder; the superfine inorganic powder prepared above Stir and mix with anhydrous ethanol at a mass ratio of 1:5 for 12 minutes, then add 12-hydroxystearic acid at 1% of the total mass, stir to make the inorganic powder uniformly dispersed, and add anhydrous ethanol until the...

Example Embodiment

[0019] Example 3

[0020] First, take the kaolin and use a high-pressure roller to crush it into 200 mesh kaolin powder. The kaolin powder is mixed with water to form a kaolin slurry with a solid weight of 80%. Then, based on parts by weight, 20 parts of quartz stone and 20 parts of CaCO are selected. 3 , 5 parts of MgCO 3 , 25 parts of titania, 28 parts of zircon and 2 parts of alumina were rolled and sieved to prepare a 150 mesh mixed inorganic powder; the mixed inorganic powder prepared above and the kaolin slurry were stirred and mixed at a mass ratio of 1:3 40min, then place it in an oven at 80~90℃ to dry for 12h, take it out and crush it again and sieving to prepare superfine inorganic powder of 300 mesh; combine the superfine inorganic powder prepared above with anhydrous Ethanol was stirred and mixed at a mass ratio of 1:5 for 15 minutes, then 12-hydroxystearic acid was added at 2% of the total mass, stirred to make the inorganic powder uniformly dispersed, and anhydrous e...

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Abstract

The invention relates to a preparation method of a far infrared thermal-shock-resistant ceramic, and belongs to the field of preparation of ceramic materials. In order to solve the problems that when inorganic materials of metallic oxides and silicates are added to prepare a high-heat-resistance ceramic, the expansion coefficient of the material is reduced, and the thermal-shock-resistant ceramic is low in toughness, is easy to break up and cannot meet utilization requirements of the existing life on ceramics, the preparation method provided by the invention comprises: carrying out mixed ball milling on polyvinyl butyral and various types of powder, then drying the mixture to prepare a dry-pressed green body, then carrying out stirring mixing on the green body, anhydrous ethanol and polyvinyl butyral to load the ball milling powder, and spraying the mixture to coat a ceramic body, thereby preparing a far infrared thermal-shock-resistant ceramic. According to the preparation method, while the thermal shock resistance of the ceramic is kept, the toughness of the ceramic is enhanced.

Description

technical field [0001] The invention relates to a method for preparing a laser cladding high-temperature-resistant and anti-oxidation coating, which belongs to the field of high-temperature-resistant coating preparation. Background technique [0002] The application of carbon fiber reinforced silicon carbide ceramic matrix composites as high-temperature thermal structural materials in the fields of aerospace and atomic energy has attracted extensive attention. It is one of the most ideal thermal structural materials to increase the temperature of the engine combustion chamber, thereby increasing the energy conversion rate. Carbon fiber has good high-temperature mechanical properties and thermal properties, and can maintain mechanical properties such as strength and modulus without reducing in an inert environment exceeding 2000 °C. Composite materials have good fracture toughness, wear resistance, low thermal expansion coefficient, high thermal conductivity, high gasificati...

Claims

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Application Information

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IPC IPC(8): C04B33/13C04B33/04
CPCC04B33/13C04B33/04C04B33/1305C04B33/131C04B35/6261C04B2235/3206C04B2235/3208C04B2235/3232C04B2235/3244C04B2235/3418C04B2235/665C04B2235/9607
Inventor 雷春生高力群
Owner 雷春生
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