Due to the remarkable physical and mechanical properties of individual, perfect carbon nanotubes (CNTs), they are considered to be one of the most promising new reinforcements for structural composites. Their impressive electrical and thermal properties also suggest opportunities for multifunctional applications. In the context of inorganic matrix composites, researchers have particularly focus...

Over the past 40 years, development of Ceramic Matrix Composites (CMCs) has focused mainly on improvement material performance and optimization cost-efficient production routes. Recently, more fields application have opened up for CMCs, in which environmental impacts are relevant. These barely been investigated so far but receive growing interest due to increasing awareness consequences. Our in...

This paper is the second of a two-part series assessing the feasibility of using the J-integral with full-field deformation data from Digital Image Correlation (DIC) to characterize toughness in continuous fiber, SiCf/SiCc ceramic matrix composites (CMCs). In Part I, line and area integral adaptations of the J-integral were validated with analytical and experimental deformation fields. It was f...

The influence of fiberlmatrix interactions on the mechanical behavior of ceramic matrix composites is examined on glass matrix composites and mainly on composites made by chemical vapor infiltration (CVI) of a fiber preform by a SiC matrix. Then the relationships between interfaces and features of the stress-strain behavior are highlighted on microcomposite specimens using experimental data and...

Abstract Yttrium‐silicates (Y 2 Si O 7 and Y SiO 5 ) are candidate environmental barrier coating (EBC) materials for silicon carbide ceramic matrix composites (SiC‐CMCs). These materials’ high‐temperature, high‐velocity steam, siliceous debris resistance well studied. However, Na SO 4 ‐induced hot corrosion mechanisms less understood. Free‐standing atmospheric plasma sprayed coupons were expose...

A workshop on mechanical testing methodology for glass, glass-ceramic, and ceramic matrix composites was held at NIST on February 8,1990. The purpose of the workshop was to assess roomand elevated-temperature measurement techniques for whiskerand continuous-fiber reinforced ceramic composites and their constituents. Techniques being used for metaland polymer-matrix composites as well as those d...

Abstract A novel Y 3 Si 2 C material was synthesized at a relatively low temperature (900 °C) using molten salt method for the first time, and subsequently used as joining carbon fiber reinforced SiC (C f /SiC) composites. The sound near-seamless joints with no obvious remaining interlayer were obtained 1600 °C an electric field-assisted sintering technique (FAST). During joining, liquid phase ...

Chemical cross-linking modification can significantly enhance the tensile strength (TS) of soy protein isolate (SPI)-based composites, but usually at the cost of a reduction in the elongation at break (EB). In this study, eco-friendly and high-potential hybrid SPI-based nanocomposites with improved TS were fabricated without compromising the reduction of EB. The hybrid of carboxymethylated chit...

Ceramic matrix composites (CMCs) have been prepared and optimized as already described in part I of this paper. The fibrous preform made Hi-Nicalon S fibers was densified by a composed Si2N2O inside the CMC reacting mixture Si SiO2 under high nitrogen pressure. This describes oxidation resistance mechanical properties CMC. submitted to wet oxygen at 1400 °C for 170 h exhibited an gradient from ...