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Repair method for damaged SiC coating carbon/carbon composite material
The invention relates to a repairing method for a damaged SiC coating carbon/carbon composite material, in particular to a SiO2-Nd2O3/Si-SiC repairing system for the damaged SiC coating carbon/carbon composite material and a preparation method of the SiO2-Nd2O3/Si-SiC repairing system, and the damaged part of the SiC coating is locally repaired by adopting a SiO2-Nd2O3/Si-SiC double-layer system based on a laser cladding technology. Wherein the Si-SiC inner coating has good physical and chemical compatibility with the C/C composite material matrix and the SiC coating at the undamaged part, and the recovery of the oxidation protection performance of the repaired sample is facilitated; and the SiO2-Nd2O3 outer coating has extremely strong reflection characteristics on laser with the wave band of about 1 [mu] m, and can effectively reduce the absorption of the material on laser energy and the generation of heat, so that the secondary damage of the laser on the SiC coating is effectively prevented.
本发明涉及一种针对损伤SiC涂层炭/炭复合材料的修复方法，针对损伤SiC涂层炭/炭复合材料的SiO2‑Nd2O3/Si‑SiC修复体系及其制备方法，基于激光熔覆技术，采用SiO2‑Nd2O3/Si‑SiC双层体系对SiC涂层损伤处进行局部修复。其中，Si‑SiC内涂层与C/C复合材料基体及未损伤处的SiC涂层间均具有良好的物理化学相容性，有利于修复后试样氧化防护性能的恢复；SiO2‑Nd2O3外涂层对1μm附近波段的激光呈现极强的反射特性，能够有效减少材料对激光能量的吸收与热量的生成，从而有效防护激光对SiC涂层的二次损伤。
Repair method for damaged SiC coating carbon/carbon composite material
The invention relates to a repairing method for a damaged SiC coating carbon/carbon composite material, in particular to a SiO2-Nd2O3/Si-SiC repairing system for the damaged SiC coating carbon/carbon composite material and a preparation method of the SiO2-Nd2O3/Si-SiC repairing system, and the damaged part of the SiC coating is locally repaired by adopting a SiO2-Nd2O3/Si-SiC double-layer system based on a laser cladding technology. Wherein the Si-SiC inner coating has good physical and chemical compatibility with the C/C composite material matrix and the SiC coating at the undamaged part, and the recovery of the oxidation protection performance of the repaired sample is facilitated; and the SiO2-Nd2O3 outer coating has extremely strong reflection characteristics on laser with the wave band of about 1 [mu] m, and can effectively reduce the absorption of the material on laser energy and the generation of heat, so that the secondary damage of the laser on the SiC coating is effectively prevented.
本发明涉及一种针对损伤SiC涂层炭/炭复合材料的修复方法，针对损伤SiC涂层炭/炭复合材料的SiO2‑Nd2O3/Si‑SiC修复体系及其制备方法，基于激光熔覆技术，采用SiO2‑Nd2O3/Si‑SiC双层体系对SiC涂层损伤处进行局部修复。其中，Si‑SiC内涂层与C/C复合材料基体及未损伤处的SiC涂层间均具有良好的物理化学相容性，有利于修复后试样氧化防护性能的恢复；SiO2‑Nd2O3外涂层对1μm附近波段的激光呈现极强的反射特性，能够有效减少材料对激光能量的吸收与热量的生成，从而有效防护激光对SiC涂层的二次损伤。
Repair method for damaged SiC coating carbon/carbon composite material
一种针对损伤SiC涂层炭/炭复合材料的修复方法
LI HEJUN (author) / WANG HANHUI (author) / SHI XIAOHONG (author)
2021-09-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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