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Ceramic matrix composite
About: Ceramic matrix composite is a research topic. Over the lifetime, 7807 publications have been published within this topic receiving 117020 citations.
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TL;DR: In the last few years, great interest has been aroused in ceramic coated particle nuclear fuels, which consists of small particles of the fuel material coated with a thin, impermeable ceramic layer and dispersed in a ceramic matrix.
35 citations
25 Jul 2006-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the fracture toughness of the composites was improved to 5.65-7.21m 1/2, and its flexural strength value was between 196-MPa and 305-MPA, depending on the relative density.
Abstract: Silicon carbide (SiC) whisker reinforced SiC ceramic matrix composites were prepared by chemical vapor infiltration. Microstructure and mechanical properties of the composites were investigated. The fracture toughness of the composites was improved to 5.65–7.21 MPa m 1/2 , and its flexural strength value was between 196 MPa and 305 MPa, depending on the relative density. The pullout of rough whisker, crack deflection and whisker bridging are responsible for the improvement in fracture toughness. The randomly oriented whiskers that paralleled to the crack plane, and the weak bonding strength between whisker and matrix could not have much stress transfer from the matrix, leading to the low flexural strength.
35 citations
TL;DR: In this paper, the development state of nanocarbon-toughened ceramic matrix composites is reviewed based on the preparation methods and basic properties of the matrix composite.
Abstract: Abstract Nanocarbon materials (carbon nanotubes, graphene, graphene oxide, reduced graphene oxide, etc.) are considered the ideal toughening phase of ceramic matrix composites because of their unique structures and excellent properties. The strengthening and toughening effect of nanocarbon is attributed to several factors, such as their dispersibility in the matrix, interfacial bonding state with the matrix, and structural alteration. In this paper, the development state of nanocarbon-toughened ceramic matrix composites is reviewed based on the preparation methods and basic properties of nanocarbon-reinforced ceramic matrix composites. The assessment is implemented in terms of the influence of the interface bonding condition on the basic properties of ceramic matrix composites and the methods used to improve the interface bonding. Furthermore, the strengthening and toughening mechanisms of nanocarbon-toughened ceramic matrix composites are considered. Moreover, the key problems and perspectives of research work relating to nanocarbon-toughened ceramic matrix composites are highlighted.
35 citations
TL;DR: In this article, a SiC fiber reinforced SiC ceramic matrix composites (SiCf/SiC) were joined by Y-Al-Si-O glass, and the results showed that the wettability of Y30 glass was good and the wetting angle was 9.84°.
35 citations
Patent•
08 May 1996TL;DR: In this paper, a fiber reinforced ceramic matrix composite is described, which comprises a ceramic matrix and a fibre preform integrally assembled therein, the fiber preform comprising a braided fabric derivable from braiding a yarn which is composed of a plurality of fibre bundles formed of the plurality of monofilaments bundled together, the yarns (fibre bundles) may preferably be disposed in oblique relation to each other.
Abstract: A fibre reinforced ceramic matrix composite is disclosed which comprises a ceramic matrix and a fibre preform integrally assembled therein, the fibre preform comprising a braided fabric derivable from braiding a yarn which is composed of a plurality of fibre bundles formed of a plurality of monofilaments bundled together, the braided fabric being present in a volume fraction of fibre (Vf) of 10 to 40% by volume based on the total volume of the ceramic matrix composite. The yarns (fibre bundles) may preferably be disposed in oblique relation to each other. Initial matrix cracking strength, crack propagation resistance and fracture energy can be significantly increased. Fibre preforms even of relatively complicated shape can be easily obtained and used in forming the matrix composite.
35 citations