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Showing 1 to 11 of 11 for “"Polymer Derived Ceramics"”.
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Polymer-derived Ceramics: Electronic Properties And Application
… this work, we studied the electronic behavior of polymer-derived ceramics (PDCs) and applied them for the synthesis of carbon nanotube reinforced ceramic nanocomposites and ceramic MEMS (Micro-Electro-Mechanical Systems) structures. Polymer-derived SiCN ceramics were synthesized by pyrolysis of a …
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Molecular Dynamic Simulation of Polysiloxane
Polymer Derived Ceramics are a promising class of Materials that allow for higher levels of tunability and shaping that traditional sintering methods do not allow for. Polysiloxanes are commonly used as a precursor for these types of material because of their highly tunable microstructures by …
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Polymer-derived Si-al-c-n Ceramics:oxidation, Hot-corrosion, And Structural Evolution
Polymer-derived ceramics are a new class of materials synthesized by thermal decomposition of polymer precursors. Previous studies have shown that the materials exhibit excellent thermo-mechanical properties and can be stable at temperatures up to 2000oC. Furthermore, the novel polymer-to-ceramics …
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Novel Conceptual Design And Anlysis Of Polymer Derived Ceramic Mems Sensors For Gas Turbine Environment
… develop two sensors based on recently developed polymer-derived ceramics (PDCs): Constant Temperature Hot wire Anemometer, temperature/heat-flux sensor for turbine applications. PDC is a new class of high temperature ceramics. As we shall describe below, many unique features of PDCs make them …
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Structural Characterization and Material Property Evaluation in Polymer-Derived SiOC Ceramics and Ceramic Nanocomposites
The field of advanced ceramics will experience significant growth in the upcoming decade to address increasing demands for multifunctional temperature- and corrosion-resistant materials for aerospace, energy, and electronics sectors. Polymer-derived ceramics (PDCs) and specifically polymer-derived …
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1, 2, and 3 Dimension Carbon/Silicon Carbon Nitride Ceramic Composites
Polymer-derived ceramics (PDCs) are exceptional ultra-high temperature and stable multifunctional class of materials that can be synthesized from a polymer precursor through thermal decomposition. The presented research focuses on 1-D nanofibers, 2-D films and 3-D bulk, carbon-rich silicon carbon …
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Synthesis and indentation of boride and carbide coated carbon nanotube composite microstructures
… and pyrolysis of a silicon oxycarbide (SiOC) polymer derived ceramic leading to coating thickness from 8 nm to full infiltration. Both coatings enable the infiltration of CNT pillars and lead to a significant increase in stiffness and strength. Nanoindentation tests using a flat punch were …
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Advanced covalent ceramics from organosilicon polymers for sustainable energy and environment
… thermal degradation of the liquid-phase polymers of molecular precursor-derived ceramics offer them excellent engineering properties. Amorphous ceramic phase and resistance to crystallization up to 1400 °C, high-temperature stability, and intense photoluminescence are some of the …
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Polymer-Derived Ceramic Coatings for Stress and Corrosion Resistance in Stainless Steel: Optimization of Thermal Stability and Structural Integrity
… on the development and characterization of polymer-derived ceramic (PDC) coatings, particularly SiON and SiOCN, aimed at enhancing corrosion resistance, thermal stability, and structural integrity of stainless steel in harsh environments. Using perhydropolysilazane (PHPS) and its …
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Fundamental Understanding and Functionality of Silicon Oxycarbide
Silicon oxycarbide (SiOC) is a unique polymer-derived ceramic (PDC) containing silicon, oxygen, and carbon atoms in the form of an amorphous network structure. The phase separation of SiOC is determined by polymeric precursors, pyrolysis temperatures, and atmosphere, which results in different …
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Novel materials and optical waveguide systems for silicon photonics
… create molecularly-tailored, nanostructured SiOC ceramics with unusual multifunctional properties, including photoluminescence. In addition these novel, polymer-derived ceramics, or PDCs, will have high resistance to oxidation, degradation, corrosion and deformation at temperatures above 1400°C. …