Polycarbosilane-derived ceramic coatings with crack-free morphology for improving oxidation resistance of steel

Article Materials Science, Ceramics

Effect of curing process and pyrolysis temperature on the microstructure, adhesion and corrosion resistance of PCS-derived coatings

Fuping Li et al.

Summary: Polycarbosilane-derived coatings were fabricated on iron substrate using dip-coating method, and the effects of curing process and pyrolysis temperature on the coating properties were systematically studied.

CERAMICS INTERNATIONAL (2022)

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Article Materials Science, Ceramics

Optimal preparation of high-entropy boride-silicon carbide ceramics

Yan Zhang et al.

Summary: This study examined the effects of using borothermal and boro/carbothermal reduction methods in fabricating high-entropy boride-silicon carbide (HEB-SiC) ceramics. It was found that spark plasma sintering at 2000 degrees C could achieve HEB-SiC ceramics with > 98% theoretical density, and the addition of SiC resulted in slight coarsening of the microstructure. The results suggested that the choice of powder processing method and the inclusion of SiC phase could optimize the preparation of high-entropy boride-based ceramics.

JOURNAL OF ADVANCED CERAMICS (2021)

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Article Materials Science, Ceramics

Modeling the pyrolysis of preceramic polymers: A kinetic study of the polycarbosilane SMP-10

Thomas S. Key et al.

Summary: A material model was developed to predict changes in mass, density, and volume of cured preceramic polymers for CMC matrices as they pyrolyze into ceramics. The ability to accurately predict changes in a matrix material's volume is essential to determining processing conditions that will efficiently minimize composite scrap rates. Density plays a dominant role in volume shrinkage during the pyrolysis process.

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY (2021)

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Article Green & Sustainable Science & Technology

Iron and steel recycling: Review, conceptual model, irreducible mining requirements, and energy implications

L. D. Danny Harvey

Summary: The production of new steel through recycling requires up to 10 times less energy than producing steel from virgin iron ore, but some primary steel is still needed to compensate for shortcomings in steel collection and processing. While there are constraints on end-of-life steel recycling currently, there are prospects for reducing these constraints in the future.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2021)

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Article Materials Science, Multidisciplinary

SiOC(N) Cellular Structures with Dense Struts by Integrating Fused Filament Fabrication 3D Printing with Polymer-Derived Ceramics

Apoorv Kulkarni et al.

Summary: Significant progress has been made in various 3D printing methods for ceramics, with the fabrication of cellular ceramics using polymer-derived ceramics gaining popularity. The study systematically evaluated the factors influencing the preparation of cellular ceramics, showing that the ceramic components manufactured through this method have excellent performance and can be used in bone regeneration and other fields.

ADVANCED ENGINEERING MATERIALS (2021)

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Article Chemistry, Physical