Multi-pore fiber-shaped carbon-based insulation material surface anti-oxidation high-emissivity coating and manufacturing method thereof
An anti-oxidation coating and high emissivity technology, which is applied to the device, coating, and special surface of the surface coating liquid, can solve the problems of insufficient high temperature oxidation resistance, thermal expansion coefficient mismatch, etc., to meet the requirements of brush coating and slurry spraying requirements, uniform slurry, good temperature resistance and oxidation resistance
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example 1
[0036] (1) Preparation of glass powder: take 75% by mass of silicon dioxide and 25% by mass of boron oxide powder and mix them by ball milling in a mixing tank, then place them in a furnace at 1300°C for 2 hours, take them out and cool them down quickly. Obtain glass frit, then vibrate, break and grind into powder for later use;
[0037] (2) Preparation of inner transition coating: take by weight 35% glass powder by mass, 2% by mass silicon hexaboride powder and 41% by mass molybdenum disilicide, take dehydrated alcohol as solution, anhydrous The mass ratio of ethanol and raw materials is 1:1.5. Ball milling and mixing treatment was performed at a speed of 180 rpm for 4 hours using a star ball mill to obtain an inner layer transition layer slurry. And the slurry is evenly brushed on the surface of the carbon-based heat insulation material to form a layer of coating that penetrates into the substrate to a depth of 2mm;
[0038] (3) Preparation of the middle anti-oxidation coa...
example 2
[0044] (1) Preparation of glass powder: take 84% by mass of silicon dioxide and 16% by mass of boron oxide powder and mix them by ball milling in a mixing tank, then place them in a furnace at 1350°C for 3 hours, take them out and cool them down quickly. Obtain glass frit, then vibrate, break and grind into powder for later use;
[0045] (2) Preparation of inner layer transition coating: Weigh 55% by mass of glass powder, 4% by mass of silicon hexaboride powder, 48% by mass of molybdenum disilicide and 15% by mass of tantalum disilicide, Using absolute ethanol as the solution, the mass ratio of absolute ethanol to raw materials is 1:1.4. Ball milling and mixing treatment was performed at a speed of 180 rpm for 4 hours using a star ball mill to obtain an inner layer transition layer slurry. And the slurry is evenly brushed on the surface of the carbon-based heat insulation material to form a layer of coating that penetrates into the substrate at a depth of 1.5-2mm;
[0046] (...
example 3
[0052] (1) Preparation of glass powder: take 90% by mass of silicon dioxide and 10% by mass of boron oxide powder and mix them by ball milling in a mixing tank, then place them in a furnace at 1400° C. for 4 hours, take them out and cool them quickly. Obtain glass frit, then vibrate, break and grind into powder for later use;
[0053] (2) Preparation of inner layer transition coating: Weigh 42% by mass of glass powder, 1% by mass of silicon hexaboride powder, 2% by mass of silicon tetraboride powder, 20% by mass of disilicide Molybdenum and tantalum disilicide with a mass percentage of 35% are used as a solution in absolute ethanol, and the mass ratio of absolute ethanol and raw materials is 1:1.1. Ball milling and mixing treatment was performed at a speed of 200 rpm for 4 hours using a star ball mill to obtain an inner layer transition layer slurry. And the slurry is evenly brushed on the surface of the carbon-based heat insulation material to form a layer of coating that pe...
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