Engineering Commons^™

Sic-Sic Cmcs Using Bn Powder Coated Silicon Carbide Fibers, Eric Ness, Shinichiro Aonuma, Koichi Machida, Charles Lewinsohn

Advanced Ceramic Matrix Composites: Science and Technology of Materials, Design, Applications, Performance and Integration

Silicon carbide composites are desired for use in aerospace, automotive, semiconductor, and high performance materials markets where toughness and graceful failure mechanisms are important. CoorsTek Inc. supplies over one hundred types of engineered ceramic materials, including several compositions of monolithic silicon carbide (SiC). CoorsTek KK, in Japan, has extensive experience processing silicon carbide via several routes, including CVD, reaction bonding, and melt infiltration for commercial production of silicon carbide wafer boats and wafer manipulators. This core competency has been leveraged to accelerate production of silicon carbide matrix composites such as carbon fiber reinforced brakes for performance cars. The most recent …

Image Analysis, Synthesis And Image-Based Modeling Of Ceramic-Matrix Composites, Gerard L. Vignoles

Advanced Ceramic Matrix Composites: Science and Technology of Materials, Design, Applications, Performance and Integration

This presentation will summarize some current research performed at LCTS on CMCs imaging and image-based modeling. Several aspects of SiC fiber-reinforced non-oxide CMCs production and use are envisaged. First, processing by chemical vapor infiltration is addressed through a series of modeling tools allowing the prediction of infiltration gradients as a function of the processing parameters and of the fibrous architecture. Second, the self-healing capability of multiphase, boron- and silicon-containing matrices is modeled through the use of a specific image-based method. Third, the high-temperature mechanical behavior of these materials is investigated by a thorough analysis of time series of X-ray µ-CT …

Sic Fibers And Sic/Sic Ceramic Matrix Minicomposites Damage Behavior, Amjad Almansour

Advanced Ceramic Matrix Composites: Science and Technology of Materials, Design, Applications, Performance and Integration

Silicon Carbide based Ceramic Matrix Composites (CMCs) are attractive materials for use in high-temperature applications in the aerospace industry. The performance and durability of a CMC depends on the properties of its constituents. Therefore, the limitations and damage mechanisms of CMC matrix and fiber reinforcement are discussed and characterized in representative simulated application conditions, and the dominant damage mechanisms at elevated temperatures are identified. The tensile creep behavior of single Hi-Nicalon^TM Type S and Sylramic^TM SiC fibers was characterized via testing and creep parameters were extracted. Fiber creep tests were performed in air or vacuum at 1200-1482°C under …

High Temperature Composite Overview In France, Marc Montaudon, Eric Bouillon

Advanced Ceramic Matrix Composites: Science and Technology of Materials, Design, Applications, Performance and Integration

Exactly 40 years after the first production of a high temperature composite material in France, this presentation recalls the history of the development of the related technologies and applications.

We will describe how, under the leadership of Société Européenne de Propulsion (SEP) until 1994 and since then of the SAFRAN Group, different families of composites were successively developed and brought to an industrial stage: carbon fibers reinforced carbon, carbon fibers reinforced ceramic, ceramic fibers reinforced ceramics, reaching in 2017 a total volume of production of more than 1,000 metric tons per year.

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Overview Of Ceramic Matrix Composite Research At Nasa Glenn Research Center, James D. Kiser Et Al, Joseph E. Grady, Craig E. Smith, Roy M. Sullivan, Valerie L. Wiesner, Janet B. Hurst, Steven M. Arnold, Dongming Zhu, Amjad S. Almansour, Ramakrishna T. Bhatt, Sreeramesh Kalluri, Sai Raj

Advanced Ceramic Matrix Composites: Science and Technology of Materials, Design, Applications, Performance and Integration

In support of NASA’s Aeronautics Research Mission, the Glenn Research Center in Cleveland, OH, has been developing and assessing the performance of high temperature SiC/SiC ceramic matrix composites (CMCs), both with and without protective coatings, for turbine engine applications. Combinations of highly creep-resistant SiC fibers, advanced 3D weaves, durable environmental barrier coatings (EBCs), and a 2700°F-capable hybrid SiC matrix have been evaluated. The effects of steam and thermal gradients on composite durability and means of monitoring and modeling damage are also being investigated. Additional studies focused on understanding the creep of SiC fibers and the behavior of SiC/SiC minicomposites that …

Updated Composite Materials Handbook-17 (Cmh-17) Volume 5 - Ceramic Matrix Composites, James Doug Kiser, Rachael Andrulonis, Cindy Ashforth, Kaia E. David, Curtis Davies

Advanced Ceramic Matrix Composites: Science and Technology of Materials, Design, Applications, Performance and Integration

A wide range of issues must be addressed during the process of certifying CMC (ceramic matrix composite) components for use in commercial aircraft. The Composite Materials Handbook-17, Volume 5, Revision A on ceramic matrix composites has just been revised to help support FAA certification of CMCs for elevated temperature applications. The handbook supports the development and use of CMCs through publishing and maintaining proven, reliable engineering information and standards that have been thoroughly reviewed. Volume 5 contains detailed sections describing CMC materials/processing, design/analysis guidelines, testing procedures, and data analysis and acceptance. A review of the content of this latest revision …

Conference Program, Yutaka Kagawa, Dongming Zhu, Ram Darolia, Rishi Raj

Advanced Ceramic Matrix Composites: Science and Technology of Materials, Design, Applications, Performance and Integration

No abstract provided.

The Potential Of Plasma Activation For Eb-Pvd Of Ebc Systems On Cmc Components, Burkhard Zimmermann, Gösta Mattausch, Bert Scheffel, Jens-Peter Heinß, Frank-Holm Rögner, Christoph Metzner

Advanced Ceramic Matrix Composites: Science and Technology of Materials, Design, Applications, Performance and Integration

Gas turbines are subject of intense research and development in order to meet increasing demands on fuel efficiency, reduction of emissions, or enhanced power. One of the major keys is improving the thermal efficiency by increased gas temperature within the turbine. In the hot turbine section, nickel-based superalloy components with thermal barrier coatings are utilized, which are still being refined and improved. Nevertheless, in order to significantly increase temperature capability and turbine efficiency, silicon-based non-oxide ceramics are being investigated and introduced as new base materials, allowing for lower-weight components operating at elevated temperatures. Severe weight losses due to water vapor …