Ceramic matrix composites (CMCs) based on silicon carbide (SiC) are promising materials for applications as structural components used under high irradiation flux and high temperature conditions. The addition of SiC fibers (SiC) may improve both the physical and mechanical properties of CMCs and lead to an increase in their tolerance to failure. This work describes the fabrication and characterization of novel preceramic paper-derived SiC/SiC composites fabricated by spark plasma sintering (SPS). The sintering temperature and pressure were 2100 °C and 20-60 MPa, respectively. The content of fibers in the composites was approx. 10 wt.%. The matrix densification and fiber distribution were examined by X-ray computed tomography and scanning electron microscopy. Short processing time avoided the destruction of SiC fibers during SPS. The flexural strength of the fabricated SiC/SiC composites at room temperature varies between 300 and 430 MPa depending on the processing parameters and microstructure of the fabricated composites. A quasi-ductile fracture behavior of the fabricated composites was observed.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040909 | PMC |
| http://dx.doi.org/10.3390/ma13030607 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Developments, challenges and prospects in thermal-hydraulic research on accident tolerant fuel.
Heliyon
October 2024
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China.
Accident Tolerant Fuel (ATF) is a next-generation fuel technology developed to enhance the fundamental safety of light water reactors. Compared to existing standard fuel technologies, ATF technology can provide the same or better performance during normal operation, transient conditions, and accident scenarios of nuclear power plants, enhancing the ability of fuel elements to withstand severe accidents while reducing the cost of generating electricity over the licensed life of the plants. This paper introduces the definition, characteristics and thermal-hydraulic research objectives of ATF technology, systematically reviews the thermal-hydraulic research results of different ATF technologies in various aspects from the perspectives of near-term concepts (UO-based composite fuels, coated Zr-based claddings, FeCrAl claddings) and long-term concepts (high-uranium-density UN fuels, FCM fuels, extruded metal fuels, SiC/SiC claddings), respectively.
View Article and Find Full Text PDFCeramic Matrix Composite Cyclic Ablation Behavior under Oxyacetylene Torch.
Materials (Basel)
September 2024
College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
To study the ablation properties and differences of plain-woven SiC/SiC composites under single and cyclic ablation. The ablation test of plain-woven SiC/SiC composites was conducted under an oxyacetylene torch. The results indicate that the mass ablation rate of cyclic ablation is lower than that of single ablation, whereas the line ablation rate is higher.
View Article and Find Full Text PDFMethodology for estimation of intrinsic dimensions and state variables of microstructures.
Phys Rev E
September 2023
Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio 45433, USA.
According to the manifold hypothesis, real data can be compressed to lie on a low-dimensional manifold. This paper explores the estimation of the dimensionality of this manifold with an interest in identifying independent degrees of freedom and possibly identifying state variables that would govern materials systems. The challenges identified that are specific to materials science are (i) accurate estimation of the number of dimensions of the data, (ii) coping with the intrinsic random and low-bit-depth nature of microstructure samples, and (iii) linking noncompressed domains such as processing to microstructure.
View Article and Find Full Text PDFA Micro-Nano Structure Formed by SiC/Graphene Oxide Self-Assembly Improves the Wear Resistance and Corrosion Resistance of an Epoxy-Based Composite Coating.
Polymers (Basel)
November 2022
School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China.
In air and railway transportation, corrosion and wear lead to the rapid failure of equipment. Epoxy (EP)-based coatings are widely used in research on the anti-corrosion of organic coatings, but their application as materials for wear resistance is limited due to their non-abrasive properties. In this study, a novel high-performance epoxy-based composite coating was developed through the self-assembly of silicon carbide (SiC) and graphene oxide (GO) and the tuning of the interfacial structure with epoxy resin.
View Article and Find Full Text PDFMaterials to Be Used in Future Magnetic Confinement Fusion Reactors: A Review.
Materials (Basel)
September 2022
Department of Physics, University of Oviedo, E-33007 Oviedo, Spain.
This paper presents the roadmap of the main materials to be used for ITER and DEMO class reactors as well as an overview of the most relevant innovations that have been made in recent years. The main idea in the EUROfusion development program for the FW (first wall) is the use of low-activation materials. Thus far, several candidates have been proposed: RAFM and ODS steels, SiC/SiC ceramic composites and vanadium alloys.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!