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Preparation method of carbon/carbon composite material high-temperature anti-oxidation coating

A carbon composite material, high-temperature oxidation resistance technology, applied in the field of material preparation, can solve the problems of preparing MAX phase coating on the fiber surface, inapplicability, etc., and achieve excellent anti-oxidation effect, high work efficiency, and the effect of enhancing the interface bonding strength.

Pending Publication Date: 2022-04-01
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

MAX materials are usually sintered at high temperature, and this process is obviously not suitable for the preparation of composite coatings
At present, there is no report on the process that can effectively prepare MAX phase coating on the fiber surface

Method used

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  • Preparation method of carbon/carbon composite material high-temperature anti-oxidation coating
  • Preparation method of carbon/carbon composite material high-temperature anti-oxidation coating
  • Preparation method of carbon/carbon composite material high-temperature anti-oxidation coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Using Ti 3 SiC 2 Powder as the main raw material.

[0023] Step 2: Put Ti in Step 1 3 SiC 2 The powder is ball milled in a ball mill, and the particle size after ball milling is 20 μm.

[0024] Step 3: The Ti after ball milling in Step 2 3 SiC 2 The powder was dried in a drying oven at a drying temperature of 60 °C and a drying time of 5.0 h.

[0025] Step 4: Set the density to 1.30g / cm 3 The base surface of the carbon / carbon composite guide tube was cleaned with alcohol, and baked in an oven for 2 hours at a temperature of 200°C.

[0026] Step 5: The dried Ti in step 3 3 SiC 2 The powder is placed in the powder feeding device of the ultra-high-speed laser cladding machine, and the carbon / carbon composite material substrate in step 4 is placed on the workbench of the ultra-high-speed laser cladding machine to be fixed, and the equipment switch is turned on for coating treatment. The ultra-high-speed laser cladding machine The powder feeding device adop...

Embodiment 2

[0030] Step 1: Using Zr 3 AlC 2 Powder as the main raw material.

[0031] Step 2: Zr in step 1 3 AlC 2 The powder is ball milled in a ball mill, and the particle size after ball milling is 40 μm.

[0032] Step 3: Zr after ball milling in step 2 3 AlC 2 The powder was dried in a drying oven at a drying temperature of 120 °C and a drying time of 3.0 h.

[0033] Step 4: Set the density to 1.70g / cm 3 The base surface of the carbon / carbon composite throat liner product is cleaned with alcohol, and baked in an oven for 4 hours at a temperature of 140°C.

[0034] Step five: the dried Zr in step three 3 AlC 2 The powder is placed in the powder feeding device of the ultra-high-speed laser cladding machine, and the carbon / carbon composite material substrate in step 4 is placed on the workbench of the ultra-high-speed laser cladding machine to be fixed, and the equipment switch is turned on for coating treatment. The ultra-high-speed laser cladding machine The powder feeding de...

Embodiment 3

[0038] Step 1: Using Ti 4 SiC 3 Powder and Zr 4 AlC 3 The mixture made by mixing the powder at a weight ratio of 2:1 is used as the main raw material.

[0039] Step 2: The mixture in step 1 is placed in a ball mill for ball milling, and the particle size after ball milling is 60 μm.

[0040] Step 3: Put the ball-milled mixture in Step 2 to dry in a drying oven at a drying temperature of 180° C. and a drying time of 0.5 h.

[0041] Step 4: Set the density to 1.85g / cm 3 The base surface of the carbon / carbon composite throat liner product is cleaned with alcohol, and baked in an oven for 2 hours at a temperature of 200°C.

[0042] Step 5: Place the dried mixture in step 3 in the powder feeding device of the ultra-high-speed laser cladding machine, place the carbon / carbon composite material substrate in step 4 on the workbench of the ultra-high-speed laser cladding machine, and turn on the equipment switch to carry out For coating treatment, the powder feeding device of the ...

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Abstract

The invention discloses a preparation method of a carbon / carbon composite material high-temperature anti-oxidation coating, and belongs to the technical field of material preparation. The preparation method comprises the following steps: taking an MAX phase material as a main raw material; carrying out ball milling and drying; cleaning the carbon / carbon composite material substrate; and preparing the MAX-phase high-temperature anti-oxidation coating by adopting an ultra-high-speed laser cladding method, so as to prepare the carbon / carbon composite material high-temperature anti-oxidation coating. According to the method, MAX-phase powder is used for carrying out anti-oxidation coating treatment on the surface of the carbon / carbon composite material by using an ultra-high-speed laser cladding technology. By means of the toughness of the MAX phase, the problems of cracking and stripping of the coating at high temperature are solved, the binding force of the coating and a matrix is enhanced, and the method is simple in process, short in operation time, high in efficiency and beneficial to large-scale production.

Description

technical field [0001] The invention discloses a method for preparing a carbon / carbon composite material high-temperature anti-oxidation coating, which belongs to the technical field of material preparation. Background technique [0002] Hypersonic flight technology, as the core technology in the field of aerospace, has received more and more attention from major aerospace countries. When the aircraft moves at high speed, the temperature of its surface nose cone, leading edge stagnation point and other parts can reach thousands or even thousands of degrees Celsius. Under these harsh conditions, composite materials such as carbon / carbon composite materials and carbon fiber-reinforced ceramic matrix composite materials alone cannot meet the needs of use, and high-temperature anti-oxidation coatings need to be coated on the surface of composite materials. However, the existing anti-oxidation coatings used for composite materials generally have problems such as high porosity, l...

Claims

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Application Information

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IPC IPC(8): C04B41/87
Inventor 邵海成乔冠军周程刘桂武张相召
Owner JIANGSU UNIV
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