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Ultrahigh-temperature antioxidant coating for carbon/carbon composite material and preparation method of ultrahigh-temperature antioxidant coating

A carbon composite material and technology of anti-oxidation coating, applied in the field of ultra-high temperature anti-oxidation coating and its preparation, can solve the problems of the integrity and continuity of coating oxidation products, and achieve excellent ultra-high temperature oxidation resistance, The effect of improving ultra-high temperature oxidation resistance and high bonding strength

Active Publication Date: 2014-03-19
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The integrity and continuity of coating oxidation products are adversely affected by CO gas generated after ZrC oxidation

Method used

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  • Ultrahigh-temperature antioxidant coating for carbon/carbon composite material and preparation method of ultrahigh-temperature antioxidant coating
  • Ultrahigh-temperature antioxidant coating for carbon/carbon composite material and preparation method of ultrahigh-temperature antioxidant coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The ultra-high temperature anti-oxidation coating for carbon / carbon composites in this embodiment is composed of the following components in volume percentage: ZrB 2 80%, MoSi 2 10%, TiB 2 5%, LuB 6 5%.

[0033] The preparation method of the carbon / carbon composite ultra-high temperature anti-oxidation coating of this embodiment is as follows:

[0034] Step 1. After polishing the carbon / carbon composite material with No. 400, No. 600, No. 800 and No. 1200 water-grinding sandpaper in sequence, clean it ultrasonically in acetone, dry it in an oven, and place it in the electron beam physical vapor phase On the workpiece rack in the middle of the vacuum chamber of the deposition furnace;

[0035] Step two, ZrB 2 Target material, MoSi 2 Target material, TiB 2 Target and LuB 6 The target material is put into the water-cooled copper crucible at the bottom of the vacuum chamber of the electron beam physical vapor deposition furnace described in step 1 in proportion;...

Embodiment 2

[0041] The ultra-high temperature anti-oxidation coating for carbon / carbon composites in this embodiment is composed of the following components in volume percentage: ZrB 2 76%, MoSi 2 12%, TiB 2 6%, LuB 6 6%.

[0042] The preparation method of the carbon / carbon composite ultra-high temperature anti-oxidation coating of this embodiment is as follows:

[0043] Step 1. After polishing the carbon / carbon composite material with water abrasive paper of No. 400, No. 600, No. 800 and No. 1200 in sequence, ultrasonically clean it in deionized water and dry it in an oven , placed on the workpiece frame in the middle of the vacuum chamber of the electron beam physical vapor deposition furnace;

[0044] Step two, ZrB 2 Target material, MoSi 2 Target material, TiB 2 Target and LuB 6 Put the target material into the water-cooled copper crucible at the bottom of the vacuum chamber of the electron beam physical vapor deposition furnace described in step 1;

[0045] Step 3, using...

Embodiment 3

[0049] The ultra-high temperature anti-oxidation coating for carbon / carbon composites in this embodiment is composed of the following components in volume percentage: ZrB 2 72%, MoSi 2 13%, TiB 2 7%, LuB 6 8%.

[0050] The preparation method of the carbon / carbon composite ultra-high temperature anti-oxidation coating of this embodiment is as follows:

[0051] Step 1. After polishing the carbon / carbon composite material with No. 400, No. 600, No. 800 and No. 1200 water-grinding sandpaper in sequence, ultrasonically clean it in absolute ethanol, and put it in an oven for drying , placed on the workpiece frame in the middle of the vacuum chamber of the electron beam physical vapor deposition furnace;

[0052] Step two, ZrB 2 Target material, MoSi 2 Target material, TiB 2 Target and LuB 6 Put the target material into the water-cooled copper crucible at the bottom of the vacuum chamber of the electron beam physical vapor deposition furnace described in step 1;

[0053]...

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Abstract

The invention discloses an ultrahigh-temperature antioxidant coating for a carbon / carbon composite material. The ultrahigh-temperature antioxidant coating consists of ZrB2, MoSi2, TiB2 and LuB6 in certain percent by volume. The invention additionally provides a preparation method of the coating. The preparation method comprises the following steps that: the carbon / carbon composite material is ground, polished, cleaned and dried; the ZrB2, MoSi2, TiB2, LuB6 and the carbon / carbon composite material are put in an electron beam physical vapor deposition furnace; the carbon / carbon composite material is heated by electron beams; the ZrB2, MoSi2, TiB2 and LuB6 are evaporated by the electron beams; and gas molecules are deposited on the surface of the carbon / carbon composite materials to form a ZrB2-MoSi2-TiB2-LuB6 coating for the carbon / carbon composite material. The coating which is prepared by adopting the method has the advantages that the coating is compact and even, the mechanical performance is good, the bonding strength with a carbon / carbon composite material substrate is high and the ultrahigh-temperature antioxidant performance of the carbon / carbon composite material can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of oxidation-resistant inorganic materials, and in particular relates to an ultra-high temperature oxidation-resistant coating for carbon / carbon composite materials and a preparation method thereof. Background technique [0002] Carbon / carbon composite materials have high specific strength, high specific modulus, low density, low thermal expansion coefficient, thermal shock resistance, and unique properties that the mechanical strength does not decrease but increases with the increase of temperature. Materials that maintain high mechanical properties under ultra-high temperature conditions from ℃ to 2500 ℃. However, although carbon / carbon composites have many excellent properties under ultra-high temperature conditions, they are prone to oxidation reactions in an aerobic environment with temperatures higher than 400 °C, resulting in a decline in the overall performance of carbon / carbon composites. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/85
Inventor 华云峰杜继红姬寿长李争显王宝云王彦峰
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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