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粉末冶金材料科学与工程  2022, Vol. 27 Issue (2): 151-160    DOI: 10.19976/j.cnki.43-1448/TF.2021096
  工艺技术 本期目录 | 过刊浏览 | 高级检索 |
浆料注射法制备Cf/SiC-ZrC复合材料的力学和抗氧化性能
姜毅, 李国栋, 于士杰, 王洋
中南大学 粉末冶金国家重点实验室,长沙 410083
Mechanical and antioxidant properties of Cf/SiC-ZrC composites prepared by slurry injection
JIANG Yi, LI Guodong, YU Shijie, WANG Yang
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
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摘要 以SiC粉和ZrC粉为原料,配制固含量体积分数为30%的水基陶瓷浆料,分别采用浆料注射法和真空浸渍法将浆料引入到密度为0.2 g/cm3的碳纤维预制体中,结合化学气相渗透和反应熔渗工艺制备Cf/SiC-ZrC复合材料。观察分析素坯和Cf/SiC-ZrC复合材料的形貌与组织结构,测定复合材料的密度、开孔率、抗弯强度和抗氧化性能等。结果表明,相比真空浸渍法,浆料注射法能一次将SiC粉和ZrC粉均匀引入碳纤维预制体中,坯体体积一次填充率为37.3%。注射法制备的复合材料平均密度为2.91 g/cm3,中心和外层的抗弯强度相差较小,分别为41.12 MPa和43.90 MPa,材料的断裂方式均表现为假塑性断裂。样品在空气中氧化120 min后,表面形成较连续致密的氧化层,氧化趋于平衡稳定,表现出较好的抗氧化性能。
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作者相关文章
姜毅
李国栋
于士杰
王洋
关键词 浆料注射真空浸渍Cf/SiC-ZrC复合材料力学性能抗氧化性能    
Abstract:In this paper, SiC and ZrC powders were used as raw materials to prepare a water-based ceramic slurry with a volume fraction of 30% solid content. Slurry injection method and vacuum impregnation method were used to introduce slurry into the carbon fiber preform with a density of 0.2 g/cm3. Combined with chemical vapor infiltration and reactive melt infiltration, Cf/SiC-ZrC composites were prepared. The morphology and microstructure of the blank and Cf/SiC-ZrC composites were observed and analyzed. The density, porosity, bending strength and oxidation resistance of the composites were measured. The results show that, compared with the vacuum impregnation method, the SiC and ZrC powders can be uniformly introduced into the carbon fiber preform by slurry injection method, and the green body volume is filled by 37.3% at one time. The average density of the injected composites is 2.91 g/cm3, and the bending strength of the center and outer layer of the composites is 41.12 MPa and 43.90 MPa, respectively. The fracture modes of the composites are all pseudoplastic fracture. After oxidation in air for 120 min, a relatively continuous and dense oxide layer is formed on the surface of the injected composite. Oxidation tends to be balanced and stable, the samples show good antioxidant properties.
Key wordsslurry injection    vacuum impregnation    Cf/SiC-ZrC composites    mechanical property    oxidation resistance
收稿日期: 2021-11-16      出版日期: 2022-05-07
ZTFLH:  TB332  
基金资助:轻质高强结构材料国家重点实验室基金项目
通讯作者: 李国栋,教授,博士。电话:13087317973;E-mail: lgd63@163.com   
引用本文:   
姜毅, 李国栋, 于士杰, 王洋. 浆料注射法制备Cf/SiC-ZrC复合材料的力学和抗氧化性能[J]. 粉末冶金材料科学与工程, 2022, 27(2): 151-160.
JIANG Yi, LI Guodong, YU Shijie, WANG Yang. Mechanical and antioxidant properties of Cf/SiC-ZrC composites prepared by slurry injection. Materials Science and Engineering of Powder Metallurgy, 2022, 27(2): 151-160.
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http://pmbjb.csu.edu.cn/CN/10.19976/j.cnki.43-1448/TF.2021096     或     http://pmbjb.csu.edu.cn/CN/Y2022/V27/I2/151
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