Preparation method of carbon material high-temperature oxidation-resistant coating by coating and sintering
A high-temperature anti-oxidation and carbonaceous material technology, which is applied in the field of inorganic coating materials for oxidation protection of carbon materials, can solve complex procedures, poor uniformity and composition controllability of anti-oxidation coatings, and poor interlayer bonding within the coating and other problems, to achieve the effect of reducing the preparation process, shortening the preparation cycle, and strong binding force
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[0023] Example 1
[0024] The coating and sintering preparation method of a carbonaceous material high-temperature anti-oxidation coating of the present invention has a density of 1.9g / cm 3 The carbon / carbon composite material is the base material. After the surface is cleaned, it is dried for later use; it includes the following steps:
[0025] (1) Brush slurry I on the surface of the cleaned carbon / carbon composite material; the slurry I includes silicone resin and Si powder, and the mass ratio of silicone resin and Si powder is 1:1. Brush the surface of the carbon / carbon composite material with 1mm thick slurry I, and dry it in a drying oven at 120°C for 1 hour.
[0026] (2) Then continue to brush slurry II on the surface of the carbon / carbon composite material of the brush slurry I obtained in step (1); the slurry II includes silicone resin, Si powder and Mo powder, silicone resin: Si The mass ratio of powder: Mo powder is 3:3:2. Brush the reaction slurry II with a thickness of...
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[0032] Example 2
[0033] The coating and sintering preparation method of a high-temperature anti-oxidation coating of carbonaceous material according to the present invention has a density of 1.7g / cm 3 The high-strength graphite is the base material. After the surface is cleaned, it is dried for later use; it includes the following steps:
[0034] (1) Brush slurry I on the cleaned graphite surface; said slurry I includes phenolic resin and Si powder, and the mass ratio of phenolic resin and Si powder is 1:2. Brush slurry I on the surface of the graphite material and dry it in a drying oven at 120°C for 1 hour. The slurry I finally generates a SiC base layer.
[0035] (2) Then continue to brush slurry II on the graphite material surface of the brush slurry I obtained in step (1); the slurry II includes phenolic resin, Si powder and Mo powder, phenolic resin: Si powder: Mo The mass ratio of powder is 3:5:1.5. Brush the reaction slurry II on the surface of the graphite material, and...
Example Embodiment
[0041] Example 3
[0042] The coating and sintering preparation method of a carbonaceous material high-temperature anti-oxidation coating of the present invention has a density of 1.9g / cm 3 The carbon / carbon composite material is the base material. After the surface is cleaned, it is dried for later use; it includes the following steps:
[0043] (1) Brush the slurry I on the surface of the cleaned carbon / carbon composite material; the slurry I includes phenolic resin and Si powder, and the mass ratio of phenolic resin and Si powder is 1:1.
[0044] (2) Then continue to brush slurry II on the surface of the carbon / carbon composite material of the brushing slurry I obtained in step (1); the slurry II includes phenolic resin, Si powder and Mo powder, phenolic resin: Si The mass ratio of powder: Mo powder is 3:5:2.
[0045] (3) Carry out high-temperature sintering of the carbon / carbon composite material of the brushed slurry I and slurry II obtained in step (2) at 1800°C for 2 hours, and ...
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