Topic
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 this paper, multi-walled carbon nanotubes (MWCNTs) were coated with a nanometer-sized SiC polycrystalline layer by the reaction of SiO(g) and CO(g).
Abstract: Multi-walled carbon nanotubes (MWCNTs) were coated with a nanometer-sized SiC polycrystalline layer by the reaction of SiO(g) and CO(g). Nanometer-sized SiC powders were mixed with 1–5 vol% SiC-coated MWCNTs and successfully sintered at 1800 °C by means of pulsed electric current sintering. These composites showed superior microhardness of 30.6 GPa and toughness of 5.4 MPa m 1/2 compared to monolithic SiC ceramics due to the improvement of adhesion between MWCNTs and the SiC matrix by the SiC coating. The microhardness and toughness of the monolithic SiC ceramics are 25.5 GPa and 4.8 MPa m 1/2 , respectively. The SiC-coated MWCNTs/SiC composites showed an interesting behavior with the elastic recovery when undergoing an indentation test.
77 citations
TL;DR: In this paper, a lightweight, flexible SiCN nanowires with highly efficient electromagnetic wave absorbing performance were prepared by electrospinning with subsequent high temperature annealing in nitrogen atmosphere.
77 citations
TL;DR: In this article, a 2.5D multi-layered ceramic-matrix composite (SiC)f/C/(SiBC)m was investigated in a dry atmosphere and in the presence of water vapour H2O (2.3 vol.%).
77 citations
TL;DR: In this paper, the microstructural and mechanical properties of the HA/titania composites are studied by X-ray diffractometry analysis, Raman spectrometry, and scanning electron microscopy.
Abstract: Hydroxyapatite-reinforced nanocomposites with titania nanocrystals addition are prepared by a homogeneous mixing of hydroxyapatite nanoparticles and titania nanocrystals based on high-energy ball milling and spark plasma sintering processes. The microstructural and mechanical properties of the HA/titania composites are studied by X-ray diffractometry analysis, Raman spectrometry, and scanning electron microscopy. The hardness and Young's modulus of the composites are characterized by a nanoindenter and they show that the incorporation of the titania nanocrystals improves the mechanical properties of the composites obviously and the improvement should be ascribed to the main solitary effect of the ceramic as additives as well as a denser composites due to combining high-energy ball milling with spark plasma sintering techniques. The bioactivity of the HA/titania composites is evaluated by immersing the spark plasma sintering (SPS) compact disk in the simulated body fluid (SBF) and the results indicate that the bioactivity of the composites is related to the addition of titania by inducing apatite nucleation on the sample's surface after being immersed in SBF.
77 citations
TL;DR: In this paper, a new class of alumina composites based on a novel hybrid microstructure design, in which multiwalled carbon nanotubes (MWNTs) and SiC nanoparticles are combined to give a new type system of ceramic nanocomposites.
77 citations