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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 this paper, multi-walled carbon nanotube (MWCNT)/nanostructured zirconia composites with a homogenous distribution of different MWCNT quantities (ranging within 0.5-5 wt%) were developed.
125 citations
TL;DR: In this article, the carbon/silicon carbide brake materials were prepared by chemical vapor infiltration (CVI) combined with liquid melt infiltration (LMI), and the carbon fiber preform was fabricated with the three dimension needling method.
124 citations
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01 Jan 1994
TL;DR: A. Nowotny et al. as mentioned in this paper proposed a micro-designed interface for Y203-ZrO2-based ceramics and showed that it can be used to study grain boundary diffusion in oxides.
Abstract: Foreword. List of Authors. Nonstoichiometry and related properties of ceramic interfaces (J. Nowotny). Studies of interfacial behaviour in ceramics via microdesigned interfaces (A. Glaeser). Interfaces in zirconia based electrochemical systems and their influence on electrical properties (S.P.S. Badwal, J. Drennan). Application of low energy ion scattering to oxidic surfaces (H.H. Brongersma et al.). Interfacial phenomena in Y203-ZrO2-based ceramics: a surface science perspective (A.E. Hughes). Important role of the interfaces in the high temperature superconductors (S.X. Dou, H.K. Liu). The role of interfaces in nuclear technology (M. Yamawaki). Some aspects of grain boundary diffusion in oxides (E.G. Moya). Chemical and structural alteration in the surface layers of oxides and sulphides (R.St.C. Smart et al.). Interfaces in ceramic substrates (K. Niwa). Diffusion-induced grain boundary phenomena in metals and oxide ceramics (E.I. Rabkin et al.). Thin films on grain boundaries in metals and ceramics and their importance for the properties of the materials (E.I. Rabkin). Systematic understanding of ceramic processing and related interfacial phenomena (K.Uematsu, Y Zhang). Interface phenomena in synroc, a titanate-based nuclear waste ceramic (E.R. Vance et al.). Chemical and polar nanodomain fluctuations in relaxor-type lead scandium tantalate (L.A. Bursill et al.). Copper and nickel ultrathin films on metal-oxide crystal surfaces (P.J. Moller). The surface chemistry of tin (IV) oxide: defects, doping and conductivity (R.G. Egdell). Impact of grain boundaries on properties of mullite as a solid electrolyte (K. Yamana et al.). High temperature embrittlement of ceramic matrix composites - interface effects (J.L. Cocking). Multilayer ceramic capacitors with nickel electrodes (H. Kishi, N. Yamaoka). Corrosion properties of ion plated TiN and CrN coatings (H. Ichimura, A. Kawana). Direct energy conversion in single gas mixture by an oxide solid electrolyte electrochemical cell and its applications in multi-gas sensing (D.Y Wang). Trends of research on ceramic interfaces (J. Nowotny). Subject Index.
124 citations
TL;DR: In this paper, the transformability of the tetragonal zirconia and residual stress in the alumina phase were examined by Raman and fluorescence piezo-spectroscopy, respectively.
Abstract: Samples of zirconia-toughened alumina (ZTA) with small amounts of chromia and magnetoplumbite-type crystalline phase (CeMgAl 11 O 19 ) have been prepared and processed under different conditions. Mechanical properties like hardness and fracture toughness were examined as a function of different parameters. As an example, fracture toughness was increased by the chromia addition, whereas platelets reinforcement addition suppressed the tetragonal zirconia (t-zirconia)–monoclinic zirconia (m-zirconia) transformation. In addition, transformability of the tetragonal zirconia and the residual stress in the alumina phase were examined by Raman and fluorescence piezo-spectroscopy, respectively. In particular, the extent to which t-zirconia transforms to m-zirconia was determined by Raman spectroscopy after Vickers indentation and the transformability was correlated to the fracture toughness. It was demonstrated that the monoclinic content and the toughness were correlated linearly and experimental results were compared with models already available for zirconia-based materials. On the other hand, residual stresses originated by transformation toughening mechanism were correlated to the transformability of the tetragonal phase.
124 citations
TL;DR: In this paper, Zirconium diboride (ZrB2) reinforced by nano-SiC whiskers has been prepared by spark plasma sintering (SPS).
Abstract: Zirconium diboride (ZrB2) reinforced by nano-SiC whiskers has been prepared by spark plasma sintering (SPS). Of most interest is the densification of ZrB2–SiCw composites accomplished by SPS at a temperature as low as 1550°C. The relative density of ZrB2–SiCw composites could reach to 97% with an average grain size of 2–3 μm. Both flexural strength and fracture toughness of the composites were improved with increasing amount of SiCw. Flexural strengths ranged from 416 MPa for monolithic ZrB2 to over 545 MPa for ZrB2–15 vol% SiCw composites. Similarly, fracture toughness also increased from 5.46 MPa·m1/2 to more than 6.81 MPa·m1/2 in the same composition range. The relative density of ZrB2–SiCw composites could be further improved to near 100% by adding some sintering aids such as AlN and Si3N4; however, the effects of different sintering additives on the mechanical properties of the composites were different.
122 citations