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Anti-oxidization coating for airplane carbon/carbon brake disc and method of producing the same

A technology of carbon brake discs and carbon brakes, applied in coatings, brake discs, devices for coating liquid on the surface, etc., can solve the problems of complex preparation process, anti-oxidation ability and moisture resistance ability to be improved, and achieve implementation Simple process, excellent anti-oxidation ability, and good processability

Inactive Publication Date: 2008-04-02
XIAN CHAOMA SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these two patent applications have improved the oxidation resistance and moisture resistance of C / C composite materials such as aircraft carbon brake discs to varying degrees, their preparation process is relatively complicated, and their oxidation resistance and moisture resistance at high temperatures are still relatively low. needs improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The following components (percentage by weight) 40% of distilled water, 30% of phosphoric acid, 8% of manganese phosphate, 14% of aluminum phosphate, 5% of zinc phosphate and 3% of boride, mixed and stirred evenly, on the surface of the cleaned aircraft carbon brake disc Coat the part to be coated, then put it in an oven and dry it at 90°C, and then put it in a high-temperature furnace for high-temperature curing in a vacuum state. The curing temperature is 500°C. After cooling naturally in the high-temperature furnace, it can be obtained Excellent anti-oxidation coating.

Embodiment 2

[0025] The following components (percentage by weight) 30% of distilled water, 40% of phosphoric acid, 5% of manganese phosphate, 10% of aluminum phosphate, 10% of zinc phosphate and 5% of boride, mixed and stirred evenly, on the surface of the cleaned aircraft carbon brake disc Coat the part to be coated, then put it in an oven and dry it at 120°C, and then put it in a high-temperature furnace for high-temperature curing under vacuum. Excellent anti-oxidation coating.

Embodiment 3

[0027] The following components (percentage by weight) 35% of distilled water, 45% of phosphoric acid, 5% of manganese phosphate, 10% of aluminum phosphate, 3% of zinc phosphate and 2% of boride, mixed and stirred evenly, on the surface of the cleaned aircraft carbon brake disc Coat the part to be coated, then put it in an oven and dry it at 130°C, and then put it in a high-temperature furnace for high-temperature curing under the condition of pre-evacuation and filling inert protective gas. The curing temperature is 700°C. After cooling naturally in the furnace Once out of the furnace, an anti-oxidation coating with excellent performance can be obtained.

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PUM

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Abstract

The present invention relates to anti-oxidant coating for plane carbon / carbon brake disc and the preparation method. In the preparation of the anti-oxidant coating for plane carbon / carbon brake disc, distilled water is used as solvent; phosphoric acid, phosphate and boron oxide are used as main components; the coating solution can be formed after stirring uniformly. The coating solution is uniformly painted on the part of the surface of a carbon brake disc to be painted in a brushing or spraying method. A layer of coating of thickness of about 50 Mu m to 300 Mu m can be formed after high-temperature solidification. The coating prepared in the method of the present invention has a dense surface, no crack or holes or other defects. The bonding performance between the coating and the carbon / carbon matrix is good. The coating has the characteristics of excellent performances of oxidation protection, and hot-wet, seawater-resistant, or smog-resistant oxide protection. The coating is suitable for the manufacture of plane carbon / carbon brake disc and the anti-oxidation treatment in repair.

Description

technical field [0001] The invention relates to a carbon / carbon composite anti-oxidation coating and a preparation method thereof, in particular to an anti-oxidation coating for aircraft carbon / carbon brake discs and a preparation method thereof. Background technique [0002] Carbon / carbon composite materials have excellent high-temperature mechanical properties, good thermal conductivity, large heat capacity, small thermal expansion coefficient, low density, light weight, good friction and wear performance, and long service life. They are widely used in the manufacture of high-energy braking devices. . However, carbon / carbon composite materials generally start to oxidize significantly in the air above 450°C, and when the carbon / carbon composite brake pair used for aircraft braking is normally braked, the body temperature of the brake pair is 450°C to 750°C. The temperature is 550°C~850°C during energy braking, and it can be as high as 900°C~1600°C during RTO braking. When...

Claims

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Application Information

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IPC IPC(8): C09D1/00F16D65/12B05D3/02
Inventor 薛宁娟肖志超苏君明彭志刚孟凡才潘向涛
Owner XIAN CHAOMA SCI TECH
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