Ytterbium-based silicates are a current generation of environmental barrier coating materials that demonstrate much promise for protecting ceramic matrix composite components in jet engines. Researchers from the University of Manchester examined the effect of thermal ageing on microstructural characteristics and elastic properties of these silicates.
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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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Finding another way to propel a rocket into space that does not rely on fuel may allow for simpler and less expensive rockets. California-based SpinLaunch is developing a novel ground-based system to launch rockets into orbit using kinetic energy rather than fuel.
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Attention on futuristic technologies such as driverless cars, flying cars, and foldable smartphones fell largely by the wayside when the COVID-19 pandemic hit in 2020. Swedish company Jetson, though, has been hard at work behind the scenes and this year plans to ship the first 12 units of its personal electric aerial vehicle to consumers.
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In a recent open-access ACerS journal article, ACerS Distinguished Life Member Alex Navrotsky and Arizona State graduate research assistant Megan Householder discuss how the study of planets shares many of the same analytical and computational frameworks as materials science.
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In December 2021, the James Webb Space Telescope finally launched after decades of delays. Today’s CTT looks at JWST’s 30-year journey to launch and ways that NASA could restructure its approach to large-scale projects in the future.
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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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Many researchers are working to uncover alternatives to yttria stabilized zirconia for use as environmental barrier coatings. High-entropy oxides are among the classes of materials being explored, and two papers in Journal of the American Ceramic Society explore different high-entropy oxide systems.
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SiC/SiC composites are one of the main ceramic matrix composites being investigated for aerospace applications. Researchers from Germany and China explored the potential of shaping such composites using the “gentle” machining process of plasma etching.
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The September 2021 issue of the ACerS Bulletin—featuring processing of high-performance materials—is now available online. Plus—ACerS Awards and C&GM.
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