Melting temperature, emissivity, and thermal conductivity of rare-earth silicates for thermal and environmental barrier coatings source:SCRIPTA MATERIALIAIn recent years, rare-earth silicates have become the industry standard for coating state-of-the-art SiC ceramic matrix composite (CMC) gas turbine engine components, due to their low volatility, high melting point, and thermal shock resistance. Current research is focused on designing rare-earth silicate based thermal- environmental barrier coatings (T/EBCs) with improved resistance to CMAS (CaO-MgO-Al2O3-SiO2), steam, and crack formati...
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source:Phys.orgQuantum technologies, which leverage quantum mechanical effects to process information, could outperform their classical counterparts in some complex and advanced tasks. The development and real-world deployment of these technologies partly relies on the ability to transfer information between different types of quantum systems effectively.A long-standing challenge in the field of quantum technology is converting quantum signals carried by microwave photons (i.e., particles of electromagnetic radiation in the microwave frequency range) into optical photons (i.e., visible or near...
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source:presstvThe pilot plant at the Abbas Abad Industrial Town has been indigenously designed and built by young Iranian experts, he said, hailing it a “great achievement” which will enable the country's access to high-tech industries to continue at a faster pace.Iranian companies were able to design, manufacture, install, and commission 100% of the equipment, some of which was manufactured and operated for the first time in the country.Before manufacturers can use the rare earth material extracted from the ground, it must go through a complex and expensive process.The first step is to mi...
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source:Tohoku UniversityA new catalyst structure offers a potential pathway toward more cost-effective hydrogen production via water electrolysis. The material centers on mesoporous single-crystalline Co3O4 doped with atomically dispersed iridium (Ir), designed for the acidic oxygen evolution reaction (OER).Iridium is known for its OER performance but is both scarce and expensive. Efficient use of Ir while maintaining stability is a major challenge for scaling up electrolyzer technologies. A new study published in the Journal of the American Chemical Society proposes a solution using a materia...
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2025
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