Carbon/carbon composite material anti-oxydation coating
A carbon composite material, anti-oxidation technology, applied in the direction of fibrous filler, inorganic pigment treatment, chemical instruments and methods, etc., can solve the problems of anti-oxidation ability to be improved, complex process, etc., achieve good anti-oxidation ability, simple process, The effect of preventing erosion
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[0012] Example 1. Mix 10% of silicon, 15% of boron, 70% of phosphate and 5% of alumina (weight percentage) and stir evenly. After brushing on the surface of the carbon / carbon composite material, heat treatment at 900°C for 2 hours (Nitrogen atmosphere), brushing and high temperature heat treatment processes are implemented under atmospheric pressure.
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[0013] Example 2: Mix 15% of silicon, 10% of boron, 65% of phosphate, and 10% of alumina (weight percentage) and stir them evenly. After brushing on the surface of the carbon / carbon composite material, heat treatment at 800°C for 3 hours (Nitrogen atmosphere), brushing and high temperature heat treatment processes are implemented under atmospheric pressure.
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[0014] Example 3, mix 15% silicon, 15% boron, 60% phosphate, and 10% alumina (weight percentage) and stir evenly. After brushing on the surface of the carbon / carbon composite material, heat treatment at 850°C for 2.5 hours (Nitrogen atmosphere), brushing and high temperature heat treatment processes are implemented under atmospheric pressure.
[0015] The carbon material of the sample in the present invention is made of Boeing-757 carbon brake disc material, which is machine-added into a sample of 10mm×10mm×10mm, the surface is brushed with a coating, and it is prepared after high-temperature heat treatment. After 100h oxidation test at 500℃, the weight loss rate was only 1.25%, and after 20h oxidation test at 700℃, the weight loss rate was only 6.01%. After 5h oxidation test at 900℃, the weight loss rate was only 6.17%.
[0016] The sample is heated to 500°C and then quickly cooled to room temperature for 50 cycles; the temperature is raised to 700°C for 5 cycles; the temperature...
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