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Preparation method of carbon/carbon composite material beta-Y2Si2O7 whisker-toughened Y2SiO5/YAS glass-ceramic composite antioxidant coating

A technology of carbon composite material and anti-oxidation coating, which is applied in the field of preparing carbon/carbon composite material composite outer coating to achieve the effects of preventing the development of cracks, improving matching, and shortening the preparation period

Active Publication Date: 2017-03-15
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these preparation methods require long-term preparation at high temperature (>1800°C)

Method used

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  • Preparation method of carbon/carbon composite material beta-Y2Si2O7 whisker-toughened Y2SiO5/YAS glass-ceramic composite antioxidant coating
  • Preparation method of carbon/carbon composite material beta-Y2Si2O7 whisker-toughened Y2SiO5/YAS glass-ceramic composite antioxidant coating
  • Preparation method of carbon/carbon composite material beta-Y2Si2O7 whisker-toughened Y2SiO5/YAS glass-ceramic composite antioxidant coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) First take an appropriate amount of Y 2 SiO 5 Powder, β-Y 2 Si 2 o 7 Whiskers, control the mass ratio of the two: β-Y 2 Si 2 o 7 Whiskers: 30wt%, Y2 SiO 5 Powder: 70wt%, dispersed in isopropanol, prepared into a suspension with a concentration of 30g / L, then put the suspension into an ultrasonic generator and vibrated for 10 minutes, took it out, put it into a magnetic rotor, and placed it on a magnetic stirrer Stir for 12h to obtain suspension A;

[0046] (2) Add iodine elemental substance to the suspension A to obtain a mixture, the concentration of iodine in the mixture is 3g / L, then place it on a magnetic stirrer to stir and heat, the stirring time is 2h, and the heating temperature is 60°C to obtain a solution B;

[0047] (3) Pour the suspension B into the hydrothermal kettle, then clamp the C / C composite material sample with SiC coating on the cathode clamp in the hydrothermal kettle, the anode is graphite, and then seal the hydrothermal kettle Then p...

Embodiment 2

[0055] (1) First take an appropriate amount of Y 2 SiO 5 Powder, β-Y 2 Si 2 o 7 Whiskers, control the mass ratio of the two: β-Y 2 Si 2 o 7 Whiskers: 20wt%, Y 2 SiO 5 Powder: 80wt%, dispersed in isopropanol, prepared into a suspension with a concentration of 20g / L, then put the suspension into an ultrasonic generator and vibrated for 8 minutes, took it out, put it into a magnetic rotor, and placed it on a magnetic stirrer Stir for 18h to obtain suspension A;

[0056] (2) Add iodine elemental substance to the suspension A to obtain a mixture, the concentration of iodine in the mixture is 2g / L, then place it on a magnetic stirrer to stir and heat, the stirring time is 1h, and the heating temperature is 80°C to obtain a solution B;

[0057] (3) Pour the suspension B into the hydrothermal kettle, then clamp the C / C composite material sample with SiC coating on the cathode clamp in the hydrothermal kettle, the anode is graphite, and then seal the hydrothermal kettle Then ...

Embodiment 3

[0065] (1) First take an appropriate amount of Y 2 SiO 5 Powder, β-Y 2 Si 2 o 7 Whiskers, control the mass ratio of the two: β-Y 2 Si 2 o 7 Whiskers: 10wt%, Y 2 SiO 5 Powder: 90wt%, dispersed in isopropanol, prepared into a suspension with a concentration of 15g / L, then put the suspension into an ultrasonic generator and vibrated for 5 minutes, took it out, put it into a magnetic rotor, and placed it on a magnetic stirrer Stir for 24h to obtain suspension A;

[0066] (2) Add iodine elemental substance to the suspension A to obtain a mixture, the concentration of iodine in the mixture is 1g / L, then place it on a magnetic stirrer to stir and heat, the stirring time is 2h, and the heating temperature is 70°C to obtain a solution B;

[0067] (3) Pour the suspension B into the hydrothermal kettle, then clamp the C / C composite material sample with SiC coating on the cathode clamp in the hydrothermal kettle, the anode is graphite, and then seal the hydrothermal kettle Then ...

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Abstract

The invention discloses a preparation method of a carbon / carbon composite material beta-Y2Si2O7 whisker-toughened Y2SiO5 / YAS glass-ceramic composite antioxidant coating. The preparation method comprises preparing a beta-Y2Si2O7 whisker-toughened Y2SiO5 porous coating on the surface of C / C-SiC through a simple pulsed arc discharge deposition method, and preparing a YAS glass-ceramic outer coating through a thermal impregnation method. The carbon / carbon composite material beta-Y2Si2O7 whisker-toughened Y2SiO5 / YAS glass-ceramic composite antioxidant coating can be well bonded to a base so that the control of the composite coating structure is realized, a preparation cycle is short and processes are simple. The coating is prepared at a low temperature and has a low cost.

Description

technical field [0001] The invention relates to a method for preparing a carbon / carbon composite material composite outer coating, in particular to a method for preparing a carbon / carbon composite material β-Y by a pulsed arc discharge deposition method combined with a hot dipping method 2 Si 2 o 7 Whisker Toughened Y 2 SiO 5 / YAS glass-ceramic composite anti-oxidation coating method. Background technique [0002] Carbon / carbon (C / C) composite materials have excellent properties such as low thermal expansion coefficient, low density, high temperature resistance, ablation resistance, high strength, high modulus, etc., especially within 2200 °C, the strength and modulus increase with temperature The excellent performance such as increase makes it one of the most promising high-temperature structural materials, and the most promising material for manufacturing aerospace turbine engines and components. However, C / C materials will be oxidized in an aerobic environment exceed...

Claims

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Application Information

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IPC IPC(8): C04B41/89C03C10/00C04B35/83
CPCC03C10/0009C04B41/009C04B41/52C04B41/89C04B2235/9684C04B41/5059C04B41/5024C04B41/4596C04B41/5023C04B35/83
Inventor 黄剑锋周磊曹丽云吴建鹏刘锦涛罗艺佳欧阳海波李翠艳
Owner SHAANXI UNIV OF SCI & TECH
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