短切碳纤维增强氧化铝复相陶瓷力学性能及抗冲击性能研究

doi:10.19936/j.cnki.2096-8000.20230628.002

复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (6): 12-16.DOI: 10.19936/j.cnki.2096-8000.20230628.002

短切碳纤维增强氧化铝复相陶瓷力学性能及抗冲击性能研究

王得盼, 梁森^*, 周越松, 刘龙

青岛理工大学机械与汽车工程学院,青岛 266520

收稿日期:2022-05-05 出版日期:2023-06-28 发布日期:2023-08-22
通讯作者: 梁森(1962—),男,博士,教授,主要从事复合材料动力学等方面的研究,liangsen888111@163.com。
作者简介:王得盼(1997—),男,硕士研究生,主要从事复合材料动力学方面的研究。
基金资助:
国家自然科学基金资助项目(52075280);山东省自然科学基金资助项目(ZR2019MEE088)

Study on mechanical properties and impact resistance of short carbon fiber reinforced alumina composite ceramics

WANG Depan, LIANG Sen, ZHOU Yuesong, LIU Long

School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, China

Received:2022-05-05 Online:2023-06-28 Published:2023-08-22

摘要/Abstract

摘要： 本文利用传统的氧化铝陶瓷制作工艺制作了碳纤维/氧化铝复相陶瓷。为防止碳纤维在高温环境下被过度氧化,分别在碳纤维表面制作一层碳粉防护层和碳化硅防护层。探究碳纤维添加含量对C_sf/Al₂O₃复相陶瓷以及C_sf/SiC/Al₂O₃复相陶瓷的力学性能及抗冲击性能的影响规律。搭建了落锤冲击试验平台,并对C_sf/SiC/Al₂O₃复相陶瓷进行冲击试验。结果表明:C_sf/Al₂O₃复相陶瓷和C_sf/SiC/Al₂O₃复相陶瓷的最大抗弯强度和断裂韧性相差不大,抗弯强度和断裂韧性分别在碳纤维含量为0.3%和0.1%时最大,为321.78 MPa和6.98 MPa·m^1/2,相较于纯氧化铝陶瓷分别提高了35%和45.2%。在落锤冲击过程中,C_sf/SiC/Al₂O₃复相陶瓷的抗冲击性能提高了4.15%,载荷峰值提高了10.05%。

关键词: 氧化铝陶瓷, 碳纤维, 抗冲击性能, 复合材料

Abstract: In this paper, carbon fiber/alumina multiphase ceramics were prepared by traditional alumina ceramic production process. In order to prevent the carbon fiber from being overoxidized in high temperature environment, a carbon powder protective layer and a silicon carbide protective layer were prepared on the surface of the carbon fiber. The effects of carbon fiber contents on mechanical properties and impact resistance of C_sf/Al₂O₃ composite ceramics and C_sf/SiC/Al₂O₃ composite ceramics were investigated. A drop hammer impact test platform was built, and the impact test of C_sf/SiC/Al₂O₃ multiphase ceramics was carried out. The results show that the maximum bending strength and fracture toughness of C_sf/Al₂O₃ composite ceramics and C_sf/SiC/Al₂O₃ composite ceramics are similar, and the maximum bending strength and fracture toughness are 321.78 MPa and 6.98 MPa· m^1/2 when the carbon fiber content is 0.3% and 0.1%, respectively, which are 35% and 45.2% higher than those of pure alumina ceramics. During the drop hammer impact process, the impact resistance of C_sf/SiC/Al₂O₃ composite ceramics increased by 4.15%, and the peak load increased by 10.05%.

Key words: alumina ceramics, carbon fiber, impact resistance, composites

中图分类号:

TB332

王得盼, 梁森, 周越松, 刘龙. 短切碳纤维增强氧化铝复相陶瓷力学性能及抗冲击性能研究[J]. 复合材料科学与工程, 2023, 0(6): 12-16.

WANG Depan, LIANG Sen, ZHOU Yuesong, LIU Long. Study on mechanical properties and impact resistance of short carbon fiber reinforced alumina composite ceramics[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(6): 12-16.

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短切碳纤维增强氧化铝复相陶瓷力学性能及抗冲击性能研究

Study on mechanical properties and impact resistance of short carbon fiber reinforced alumina composite ceramics

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