Processing

Forming methods influence the microstructure of flash-sintered ceramics

By Lisa McDonald / May 6, 2022

Flash-sintering of ceramics can lead to microstructural heterogeneity, which can negatively impact the material’s performance. Researchers in Brazil demonstrated that forming method can influence the final microstructure of flash-sintered ceramics.

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Mullite precursor method may be a game changer for fabricating ceramic matrix composites

By Lisa McDonald / April 22, 2022

Oxide–oxide ceramic matrix composites have desirable properties for use in engine components, but conventional processing techniques usually require high temperatures and pressures, which damage the oxide fiber. Researchers in India developed a one-step process for synthesizing mullite precursors that could lower sintering temperature.

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Hybrid magnetron sputtered ceramic coatings show promise in next-gen combustion engines

By Lisa McDonald / April 5, 2022

With the rising use of fuels with reduced sulfur content, novel coatings are needed to protect engine components from increased wear. Researchers from Brazil and Chile investigated the potential of a hybrid deposition technique to deposit nanostructured ceramic multilayers on piston rings.

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A shocking development—electrodynamic fragmentation could provide high-quality recycled materials for the refractory industry

By Lisa McDonald / March 18, 2022

Recycling and reusing waste materials is one approach the refractories industry is pursuing to improve sustainability. Researchers at the Fraunhofer Institute for Building Physics have explored the potential of electrodynamic fragmentation to recycle composites, and their recent study looks specifically at the potential of this technique applied to refractory materials.

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Full ceramic electrodes epitomize next step for fused filament fabrication of lithium-ion batteries

By Lisa McDonald / March 8, 2022

While fused filament fabrication has the potential to fabricate lithium-ion batteries with tailored geometries, the high amount of polymer often included in the electrodes can limit application. University of Castilla-La Mancha researchers attempted the required debinding/sintering treatment to achieve full ceramic electrodes via this additive manufacturing method.

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Consequences of methodology—influence of indenter tip radius on failure mechanisms in borided steel

By Lisa McDonald / February 22, 2022

Replication studies have demonstrated how slight changes in methodology can significantly affect results. Researchers in Mexico investigated the effect that one seemingly minor methodological change can have on experiments—the radius of the indenter tip used in scratch testing.

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Standard sintering aids and dispersants can degrade lasing performance of transparent ceramics

By Lisa McDonald / February 11, 2022

The use of transparent ceramics as a gain medium in lasers is an evolving field, and there is still much to learn about how processing parameters affect the ceramics’ performance. Researchers in Singapore and China published two papers investigating the possible effects of a standard sintering aid and dispersant on lasing performance.

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Cryomilling demonstrates potential to functionalize hexagonal boron nitride

By Lisa McDonald / December 7, 2021

Functionalizing hexagonal boron nitride is difficult due to bonding within the material’s structure. A group led by researchers at The Pennsylvania State University demonstrated the potential of cryomilling to functionalize hexagonal boron nitride through defect engineering.

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The potential of ceramic matrix composites as aerospace radomes—researchers investigate new way to prepare ceramic fibers

By Lisa McDonald / October 29, 2021

Ceramic matrix composites have numerous applications in aerospace, including as radomes to protect sensitive radar devices in an aircraft’s nose. Researchers in China investigated a new way to prepare polymer-derived ceramic fibers for radome composites.

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The potential of pultrusion to produce shape memory polymer composites

By Lisa McDonald / October 15, 2021

The highly automated and continuous pultrusion process offers several benefits over traditional manufacturing processes. Researchers led by Skolkovo Institute of Science and Technology explored the potential of pultrusion to produce shape memory polymer composites.

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