نتایج جستجو برای: mullite
تعداد نتایج: 743 فیلتر نتایج به سال:
A commodity inkjet printer was modified to print layered ceramic structures on stiff glass substrates, using inks in the form of sols with mullite stoichiometry. The sol composition optimized terms ink viscosity, surface tension, and evaporation properties. then fed into a multi-nozzle head deposited by ink-jetting. Thin lines without bulges thickness ∼1.8 μm concave profile line width ∼100 wer...
−A study of the phase transformations generated by chlorine during the calcination of clays and kaolins is presented. The original samples and residues of the thermal treatment carried out in air and chlorine atmospheres are analyzed at different calcination times and temperatures. Sample characterization was performed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Xray micr...
As human impact have been increasing strongly over the last decades, it is crucial to distinguish human-induced dust sources from natural ones in order to define the boundary of a newly proposed epoch - the Anthropocene. Here, we track anthropogenic signatures and natural geochemical anomalies in the Mukhrino peatland, Western Siberia. Human activity was recorded there from cal AD 1958 (±6). An...
In this study, mullite (3Al2O3.2SiO2) and 10 mol % magnesia added zirconia (10 MgO - 90 ZrO2) ceramic powders were synthesized by conventional production processing route. The mixtures prepared mechanical alloying method in acetone environment with ball mill. dried oven at 110 ºC for 24 hours before mixing. Mullite mol% (MgO-ZrO2) reaction sintering from the made up of stoichiometric proportion...
Multi-type Oxides In article number 2000075, Julia Hsu and co-workers present a comprehensive review of earth-abundant transition-metal based mullite-type oxides’ versatility in catalyzing wide variety reactions for abatement environmental pollutants energy conversion. An outlook on accelerating the discovery highly active stable next-generation oxidation catalysts sustainable future is also di...
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