Article
Materials Science, Ceramics
Guodong Sun, Chen Zhang, Qing Zhang, Yi Zhang, Laifei Cheng, Xingang Luan, Chengpeng Yang
Summary: This study comprehensively evaluated the mechanical properties of continuous SiC fiber reinforced SiC ceramic matrix composites and verified the correlation laws between different properties. The results showed that fiber bridging is the key mechanism controlling this correlation, while interlaminar shear is influenced by matrix cracking and interlaminar pores.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Pengpeng Yu, Zijia Lin, Jie Yu
Summary: SiC fibers reinforced SiCf/SiC composites were prepared by electrospinning with varied pyrolysis temperatures to investigate their microstructures, mechanical, thermal, and dielectric properties. Composites prepared at 1300 degrees Celsius exhibited good thermal conductivity and electromagnetic shielding effectiveness, showing promise for structural components and EMI shielding applications in the future.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Composites
Niudong Han, Yadi Duan, Zhuhui Zhang, Yingxue Yang, Diantang Zhang
Summary: This paper investigates the effects of matrix and interface on the fracture toughness and progressive damage mechanisms of 2.5D woven SiCf/SiC composites. Different interfacial layers and matrix materials were used, and the fracture toughness was determined through single edge notch bending tests. Results showed that the matrix and interface significantly influence the fracture toughness, with the composite containing PyC/SiC interfacial layers and VHPCS matrix exhibiting the highest fracture toughness. Furthermore, the presence of pores during progressive damage was found to affect the crack expansion path and improve the toughness of the composites.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Materials Science, Ceramics
Guang-Yuan Cui, Rui-Ying Luo, Lian-Yi Wang, Peng Huang
Summary: In this study, SiC nanowires (SiCNWS) were grown on the surface of PyC interface via chemical vapor infiltration (CVI) to enhance the mechanical characteristics and thermal conductivity of three-dimensional SiCf/SiC composites. The presence of SiCNWS resulted in a 46% increase in flexural strength and significant enhancement of thermal conductivity in the temperature range of 25-1000 degrees C. Analysis of energy release during damage evolution process revealed delayed damage evolution due to decreased porosity, crack deflection, and bridging of SiCNWS. The excellent thermal conductivity was attributed to thermally conductive pathways formed by SiCNWS in the dense structure.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Tao Feng, Mingde Tong, Wanbo Hou, Hejun Li, Hongjiao Lin, Shifeng Wen
Summary: Replacing carbon fibers with SiC fibers improves the reliability of Cf/HfC-SiC composites after ablation, with SiCf/HfC-SiC composites showing a higher retention rate of bending strength post-ablation due to the good oxidation resistance of SiC fibers.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Jia-Qi Song, Lian-Yi Wang, Jun-Tong Huang, Hui-Yong Yang, Peng Huang, Hao Luo, Jin-Sen Wang, Kai Zheng, Rui-Ying Luo
Summary: This study evaluated the mechanical properties of 2D woven SiCf/SiC composites fabricated via precursor infiltration and pyrolysis (PIP) through a three-point bending test. The failure processes of the composites under different loading directions were monitored using an acoustic emission (AE) system and digital image correlation (DIC) technique. The results showed that the damage process was dominated by compressive stress in composites loaded parallel to the layup direction, while tensile stress primarily affected composites loaded perpendicular to the layup direction. The complementary results obtained from the AE system and DIC technique demonstrate the effectiveness of multiple analytical methods in assessing the mechanical behavior of SiCf/SiC composites.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Pengfei Wu, Yu Liu, Shenwei Xu, Zeyu Fu, Aimin Pang, Wei Li, Haitang Yang
Summary: The addition of SiC nanowires (SiCNWs) in SiCf/PyC composites resulted in the best mechanical and anti-oxidation properties, mainly achieved through optimization of interfacial bonding strength and nano-toughening effects.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Composites
Yadi Duan, Haipeng Qiu, Tiantian Yang, Ling Wang, XiaoMeng Wang, Weijie Xie, Kun Qian, Diantang Zhang
Summary: This study investigates the progressive damage behaviors of 2.5D woven SiCf/SiC composites using a combination of techniques, revealing that both the preform structures and testing directions have a significant impact on the mechanical properties and failure mechanisms of these composite materials.
COMPOSITES COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Xin Liu, Shaojing Dong, Shuo Zhang, Xiuli Shen, Qiang Qu, Jianqiang Xin, Yongjun Wu, Yongpeng Dong
Summary: This study experimentally analyzed the macroscopic mechanical behavior and coupling damage mechanism of 2D woven SiCf/SiC ceramic matrix composites (CMC) prepared by chemical vapor infiltration (CVI) process under tension-shear coupling load. It was found that the tensile modulus and proportional limit of SiCf/SiC-CMC had no significant difference with the increase of off-axis angle, while the failure strength decreased. Microscopic analysis using scanning electron microscope (SEM) and cluster analysis of acoustic emission (AE) signals revealed the main damage types and their relationship with macro mechanical behavior under different loading conditions. It was observed that the tension-shear coupling load affected the evolution process of basic damage forms and subsequently changed the macro properties of SiCf/SiC-CMC.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Jingfei Yin, Min Li, Jiuhua Xu, Wenfeng Ding, Honghua Su
Summary: Silicon carbide fiber-reinforced silicon carbide ceramic matrix composite (SiCf/SiC) shows great potential for manufacturing aero-engines due to its high-temperature resistance and lightweight properties. However, the machining process of SiCf/SiC is challenging due to the material's hardness and brittleness, which often results in uncontrolled damages such as edge chipping, cracks, and fiber breakage. This research focuses on studying the edge chipping characteristics of SiCf/SiC during single grain grinding. The study finds that the edge chipping in SiC matrix grinding is influenced by pre-existing defects, while the edge chipping in SiC fiber grinding is dependent on both fiber orientation and grinding speed. Grinding perpendicular to the fiber orientation results in larger edge chipping compared to grinding along with the fiber orientation, and higher grinding speeds also decrease the width of the edge chipping area. Therefore, increasing grinding speed can enhance material removal rate without enlarging edge chipping, which is crucial for achieving desired surface finish and damage control in the machining of SiCf/SiC.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Q. Xu, X. Jin, L. Liu, C. Hou, N. Hu, J. Chen, S. Zhao, T. J. Marrow, X. Fan
Summary: The study investigates the thermal shock resistance of SiC/SiC composite braided tubes and measures the residual tensile strength using a novel method. The results show that the circumferential tensile strength decreases with increasing thermal shock cycles, accompanied by oxidation-induced limited fiber pullout near the surface. The test platform can simulate fast temperature cycling service environments for small test specimens in air.
EXPERIMENTAL MECHANICS
(2023)
Article
Materials Science, Ceramics
Le Wang, Shangwu Fan, Shaobo Yang, Biao Ji, Chenghua Luan, Bohan Zheng, Juanli Deng, Laifei Cheng
Summary: The study investigated the joining performance of CYAS glass powder sintered under different temperature conditions with SiCf/SiC composites. The joint prepared under 1400 degrees C/30 min condition was the densest, defect-free, with the highest shear strength.
CERAMICS INTERNATIONAL
(2021)
Article
Mechanics
Changqi Liu, Yang Chen, Duoqi Shi, James Marrow, Xin Jing, Xiaoguang Yang
Summary: The mechanical failure of 3D 4-step braided SiCf/SiC composites processed by precursor infiltration pyrolysis was studied under flexural loading to investigate the conditions at failure. Optical imaging and X-CT imaging were utilized for in situ investigation of microstructure-related failure mechanisms. The observed failure modes included matrix cracking, inter- and intra-bundle debonding, and fiber breakage. Multiple cracking in compression was found to be the ultimate failure mode.
COMPOSITE STRUCTURES
(2021)
Article
Chemistry, Physical
Guang-Yuan Cui, Rui-Ying Luo, Lian-Yi Wang, Peng Huang, Jia-Qi Song, Jin-Sen Wang
Summary: In this study, the mechanical properties of SiCf/SiC composites with a BN/SiC multilayer interface after oxidation at different temperatures were evaluated. The results showed significant temperature-dependent strength degradation and different degradation mechanisms for the oxidized composites. The deterioration of mechanical properties at higher temperatures was attributed to weak interface bonding causing fiber breakage hysteresis.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Lijuan Jiang, Yinzhi Zhou, Jianhua Hou, Baolin Wu, Zhenhua Hou, Fengnian Jin
Summary: The study found that 3D braided SiC/SiC composites with a combined (PyC + SiC) multilayer interface showed superior static and dynamic properties after oxidation.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Hao Yan, Ke Li, Yantao Gao, Yi Yang, Juan Hou, Aijun Huang
ADVANCED ENGINEERING MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Weina Guo, Yantao Gao, Wenfeng Hu, Xiangji Wu, Haijun Zhou
Summary: The mechanical behavior of SiC fiber was studied to predict composite behavior and tailor composite properties. Single-fiber tensile tests and Weibull analysis were conducted to characterize the tensile property. The surface and tensile fracture morphology of different fibers were observed by SEM, and the fiber elemental composition along the radial distribution was analyzed by EDS. XRD analysis was used to analyze the crystallinity and crystallite size of the fiber. The results showed that the tensile strength of SiC fiber followed a Weibull distribution and was influenced by surface morphology, elemental composition, crystallinity, and crystallite size.
ADVANCED ENGINEERING MATERIALS
(2022)
Review
Materials Science, Composites
Yantao Gao, Wenfeng Hu, Sanfa Xin, Lijuan Sun
Summary: This paper provides a comprehensive review of the applications of X-ray computed tomography on fiber reinforced composites, covering principles, experimental setups, manufacturing processes, modeling, mechanical damage, physical, and chemical behaviors. The advantages and limitations of X-ray CT imaging are outlined, and the future development prospects are discussed.
JOURNAL OF COMPOSITE MATERIALS
(2022)
Review
Materials Science, Textiles
Jiangxing Wu, Yantao Gao
Summary: This paper focused on fiber-based electromagnetic (EM) shielding materials, discussing the basic principles of EM shielding, the types of EM shielding fibers, the efficiency factors of EM shielding fabrics, and presenting prospects for the future development of such materials.
TEXTILE RESEARCH JOURNAL
(2023)
Review
Materials Science, Textiles
Weinan Guo, Hao Chang, Jiahuan Ni, Kai Zhu, Bo Gao, Dan Yang, Yantao Gao
Summary: The structure of the Ultra-high molecular weight polyethylene (UHMWPE) composites has a significant impact on their energy absorption capabilities. In this study, the effect of different fiber orientations and stacking sequences on the energy absorption of UHMWPE composites was explored. Additionally, the potential application of new aramid core-spun yarn and new polyester core-spun yarn in impact resistant composites was investigated. The results demonstrated that the 45 degrees/0 degrees/90 degrees/-45 degrees UHMWPE composite exhibited the highest energy absorption among the tested composites, and the introduction of aramid core-spun yarn and polyester core-spun yarn significantly enhanced the energy absorption performance.
JOURNAL OF INDUSTRIAL TEXTILES
(2023)
Article
Materials Science, Ceramics
Qianhe Li, Yantao Gao, Wenfeng Hu
Summary: This study investigates the folding endurance and damage mechanisms of silicon carbide (SiC) fiber fabrics under different folding conditions. Two-dimensional SiC fiber braided fabrics with varying braiding angles were prepared and tested. The results revealed that fabric with a higher braiding angle demonstrated optimal fold endurance performance.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Qiqi Li, Xiaoyue Li, Zhenbo Zhu, Linfeng Ye, Wenguan Liu, Yantao Gao, Min Liu
Summary: In this study, SiCf/SiC composites were irradiated with 500 keV He ions at various temperatures. The effects of irradiation on the microstructure and mechanical properties were examined using TEM, XRD, Raman spectroscopy, and nanoindentation. The results showed that He bubbles were formed in the SiC matrix after irradiation, with their sizes depending on the irradiation temperature. Additionally, the pre-existing carbon packets in the SiC fiber decomposed gradually. XRD analysis revealed a shift in the (111) peak of the SiC matrix after irradiation at 350 degrees C, followed by a shift to a higher angle with increasing irradiation temperature. Raman spectroscopy showed a decrease in the intensities of both Si-C bonds in the SiC matrix and C-C bonds in the SiC fiber after irradiation. Nanoindentation tests indicated irradiation hardening in both the SiC matrix and fibers.
CERAMICS INTERNATIONAL
(2023)
