نتایج جستجو برای: sio2 ceramic
تعداد نتایج: 36870 فیلتر نتایج به سال:
Correction to: Journal of the American Ceramic Society https://doi.org/10.1111/jace.18893 The original version this article was published with incorrect Table 3, which tentative one prepared during we examined data before publication. has been corrected by replacing 3 final in all following errors (1), (2), and (3) have corrected. (1) β-phase content (%) values listed for E03 sample reported sh...
Functionalized Fe nanoparticles (NPs) have played an important role in biomedical applications. In this study, metallic Fe NPs were deposited on SiO2 spheres to form a Fe/SiO2 composite. To protect the Fe from oxidation, a thin SiO2 layer was coated on the Fe/SiO2 spheres thereafter. The size and morphology of the SiO2@Fe/SiO2 composite spheres were examined by transmission electron microscopy ...
Silica (SiO2) nanoparticles are being progressively applied in various applications, including cosmetics, food technology, and medical diagnostics. Although crystalline SiO2 is a known carcinogen, the carcinogenicity of SiO2 nanoparticles remains unclear. Here, we assessed the cytotoxic effects and DNA injury induced by exposure to various dosages of SiO2 nanoparticles at 0-2400 mg/mL (0-3200 m...
High-alumina coal fly ash (HAFA: 45% Al2O3 and 40% SiO2) is regarded as a special solid waste that generated from power plants in northwestern China. It an important substitute for bauxite applied to prepare mullite-based ceramics. In this work, hydrometallurgy–pyrometallurgy synergistic process proposed resolve the lower Al2O3/SiO2 mass ratio (Al/Si) degree of crystallinity can promote formati...
Solar energy is a significant, environment-friendly source of renewable energy. The solar absorber transforms radiation into heat as an effective green source. Therefore, increasing its absorbing capacity can improve absorber’s effectiveness. This paper proposes tungsten tantalum alloy with silicon dioxide (WTa-SiO2) ceramic layer-based system two different metasurfaces to enhance absorptivity ...
Refractory Y-α-SiAlON with elongated grain morphology was obtained by utilizing La2O3 as a densification aid, which resulted in excellent room-temperature and high-temperature strength. Room-temperature strength of 1000 MPa was achieved when La2O3 was augmented by adding Y2O3 or removing AlN. With only La2O3, a temperature-independent strength of 800–950 MPa was maintained up to 1100°C, then gr...
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