Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing ZrO2-SiO2-SiC coated C/C composite material by adopting sol-gel method
The invention discloses a method for preparing a ZrO2-SiO2-SiC coated C/C composite material by adopting a sol-gel method, and belongs to the technical field of advanced composite anti-oxidation coating materials. The method comprises the following steps: firstly, preparing a SiC coating uniformly coating the surface of a C/C composite material, and then preparing a ZrO2-SiO2 binary mixed sol coating by adopting a sol-gel method; and dipping a SiC coated C/C composite material sample in ZrO2-SiO2 sol at normal pressure, and then carrying out drying and high-temperature heat treatment processes to prepare the high-purity ZrO2-SiO2-SiC ternary mixed sol coating. The composite coating can uniformly and compactly cover the C/C composite material, so the oxidation resistance of the C/C composite material is greatly improved. Defects such as micropores and cracks on the surface of the single-layer SiC coating are filled with SiO2 and ZrO2, so that the compactness of the coating is greatly improved, and the composite coating material with extremely high oxidation resistance is obtained.
一种采用溶胶‑凝胶法制备ZrO2‑SiO2‑SiC涂层C/C复合材料的方法，属于先进复合抗氧化涂层材料技术领域。该方法首先制得均匀的包覆在C/C复合材料表面的SiC涂层，随后采用溶胶‑凝胶法制得ZrO2‑SiO2二元混合溶胶涂层。将SiC涂层C/C复合材料试样常压浸渍于ZrO2‑SiO2溶胶中，然后经过干燥和高温热处理工序，制得高纯度ZrO2‑SiO2‑SiC三元混合溶胶涂层。该复合涂层能均匀致密地覆盖C/C复合材料，大幅提高C/C复合材料的抗氧化性能。该发明使单层SiC涂层表面的微孔、裂纹等缺陷被SiO2、ZrO2填充，大大提高了涂层的致密性，因而获得了抗氧化能力极强的复合涂层材料。
Method for preparing ZrO2-SiO2-SiC coated C/C composite material by adopting sol-gel method
The invention discloses a method for preparing a ZrO2-SiO2-SiC coated C/C composite material by adopting a sol-gel method, and belongs to the technical field of advanced composite anti-oxidation coating materials. The method comprises the following steps: firstly, preparing a SiC coating uniformly coating the surface of a C/C composite material, and then preparing a ZrO2-SiO2 binary mixed sol coating by adopting a sol-gel method; and dipping a SiC coated C/C composite material sample in ZrO2-SiO2 sol at normal pressure, and then carrying out drying and high-temperature heat treatment processes to prepare the high-purity ZrO2-SiO2-SiC ternary mixed sol coating. The composite coating can uniformly and compactly cover the C/C composite material, so the oxidation resistance of the C/C composite material is greatly improved. Defects such as micropores and cracks on the surface of the single-layer SiC coating are filled with SiO2 and ZrO2, so that the compactness of the coating is greatly improved, and the composite coating material with extremely high oxidation resistance is obtained.
一种采用溶胶‑凝胶法制备ZrO2‑SiO2‑SiC涂层C/C复合材料的方法，属于先进复合抗氧化涂层材料技术领域。该方法首先制得均匀的包覆在C/C复合材料表面的SiC涂层，随后采用溶胶‑凝胶法制得ZrO2‑SiO2二元混合溶胶涂层。将SiC涂层C/C复合材料试样常压浸渍于ZrO2‑SiO2溶胶中，然后经过干燥和高温热处理工序，制得高纯度ZrO2‑SiO2‑SiC三元混合溶胶涂层。该复合涂层能均匀致密地覆盖C/C复合材料，大幅提高C/C复合材料的抗氧化性能。该发明使单层SiC涂层表面的微孔、裂纹等缺陷被SiO2、ZrO2填充，大大提高了涂层的致密性，因而获得了抗氧化能力极强的复合涂层材料。
Method for preparing ZrO2-SiO2-SiC coated C/C composite material by adopting sol-gel method
一种采用溶胶-凝胶法制备ZrO2-SiO2-SiC涂层C/C复合材料的方法
CHEN XIAOHONG (Autor:in) / LU YAPING (Autor:in) / LI MENG (Autor:in)
04.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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