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Showing 1 to 5 of 5 for “"polysilazane"”.
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Advanced covalent ceramics from organosilicon polymers for sustainable energy and environment
… (disks) and mini-bundles with boron-modified polysilazane and hafnium-modified polysilazane preceramic polymer solutions were investigated using a lab-scale, cost-effective drop coating technique. After the successful infiltration of the fibers was confirmed, the infiltrated fibers were …
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Design of Robust Heterogeneous Catalysts for Sustainable Chemistry
… materials by the pyrolysis of palladium modified polysilazane was attempted. It was found that during polymer to ceramic transformation, palladium reacts with silicon to form intermetallic palladium silicide particles. The materials were characterized (TGA, FT-IR, NMR, PXRD and TEM) and applied in …
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Study of Si(Al)CN functionalized carbon nanotube composite as a high temperature thermal absorber coating material
… and chemical characterization of an Al-modified polysilazane polymer, which was later utilized to functionalize the outer surfaces of four commercially available CNTs. This polymer-CNT composite upon heating in nitrogen environment resulted in Si(Al)CN-CNT ceramic composite. The composite was …
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Mesostructuring of SiCN Materials and Catalysts via Microphase Separation Technique utilizing High-Density Polyethylene Blocks
… PE-OH by linking with commercially available polysilazane (HTT1800). Linked copolymer was microphase separate, cross-linked, and pyrolysed for the synthesis of SiCN mesostructures. Upon tuning the weight (volume) ratio of HTT1800 and PE-OH, various morphologies such as lamellae, fibers, and …
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Polymer-Derived Ceramic Coatings for Stress and Corrosion Resistance in Stainless Steel: Optimization of Thermal Stability and Structural Integrity
… steel in harsh environments. Using perhydropolysilazane (PHPS) and its derivatives, various coating compositions and pyrolysis conditions were optimized to tailor their microstructure and performance. The first part of the study evaluates the compatibility of SiOCN coatings on stainless …