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High-sintering-degree ceramic-based composite material and preparation method thereof
The invention relates to a high-sintering-degree ceramic-based composite material and a preparation method thereof. The method comprises the following steps: providing a porous carbon/carbon composite material; uniformly mixing the anaerobic tantalum carbide ceramic precursor with polytitanoxane to obtain a tantalum-titanium ceramic precursor; enabling the tantalum-titanium ceramic precursor to react with the porous carbon/carbon composite material through an impregnation and pyrolysis method to obtain a ceramic-based composite material; and sintering the ceramic-based composite material under the conditions of high temperature and high air pressure at the temperature of 1650-1850 DEG C and the pressure of 3.5-9.0 MPa to prepare the ceramic-based composite material with high sintering degree. According to the invention, uniform distribution of tantalum and titanium components in the ceramic precursor is fully exerted, the titanium content is controlled by utilizing the characteristic of low melting point of titanium oxide, and the reaction sintering activity of tantalum carbide is improved, so that the problem of low sintering degree of the ceramic-based composite material is effectively solved.
本发明涉及一种高烧结度的陶瓷基复合材料及其制备方法。所述方法包括：提供多孔碳/碳复合材料；将无氧碳化钽陶瓷前驱体与聚钛氧烷混合均匀，得到钽钛陶瓷前驱体；通过浸渍裂解法将所述钽钛陶瓷前驱体与所述多孔碳/碳复合材料反应，得到陶瓷基复合材料；将所述陶瓷基复合材料在温度为1650～1850℃且压力为3.5～9.0MPa的高温高气压条件下进行烧结，制得高烧结度的陶瓷基复合材料。本发明充分发挥陶瓷前驱体中钽、钛组元均匀分布，利用氧化钛低熔点的特点，控制钛含量，提高了碳化钽反应烧结活性，从而有效解决了陶瓷基复合材料烧结度低的问题。
High-sintering-degree ceramic-based composite material and preparation method thereof
The invention relates to a high-sintering-degree ceramic-based composite material and a preparation method thereof. The method comprises the following steps: providing a porous carbon/carbon composite material; uniformly mixing the anaerobic tantalum carbide ceramic precursor with polytitanoxane to obtain a tantalum-titanium ceramic precursor; enabling the tantalum-titanium ceramic precursor to react with the porous carbon/carbon composite material through an impregnation and pyrolysis method to obtain a ceramic-based composite material; and sintering the ceramic-based composite material under the conditions of high temperature and high air pressure at the temperature of 1650-1850 DEG C and the pressure of 3.5-9.0 MPa to prepare the ceramic-based composite material with high sintering degree. According to the invention, uniform distribution of tantalum and titanium components in the ceramic precursor is fully exerted, the titanium content is controlled by utilizing the characteristic of low melting point of titanium oxide, and the reaction sintering activity of tantalum carbide is improved, so that the problem of low sintering degree of the ceramic-based composite material is effectively solved.
本发明涉及一种高烧结度的陶瓷基复合材料及其制备方法。所述方法包括：提供多孔碳/碳复合材料；将无氧碳化钽陶瓷前驱体与聚钛氧烷混合均匀，得到钽钛陶瓷前驱体；通过浸渍裂解法将所述钽钛陶瓷前驱体与所述多孔碳/碳复合材料反应，得到陶瓷基复合材料；将所述陶瓷基复合材料在温度为1650～1850℃且压力为3.5～9.0MPa的高温高气压条件下进行烧结，制得高烧结度的陶瓷基复合材料。本发明充分发挥陶瓷前驱体中钽、钛组元均匀分布，利用氧化钛低熔点的特点，控制钛含量，提高了碳化钽反应烧结活性，从而有效解决了陶瓷基复合材料烧结度低的问题。
High-sintering-degree ceramic-based composite material and preparation method thereof
一种高烧结度的陶瓷基复合材料及其制备方法
YANG LIANGWEI (author) / JING GUILONG (author) / WANG XIAOHUI (author) / FENG SHIJIE (author) / YANG TONG (author) / YU XINMIN (author) / SUN TONGCHEN (author)
2024-02-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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