Corrosion of combustion-synthesized β-SiAlONs in supercritical water
Source abstract
Abstract
Abstract The corrosion of β-Si 6− z Al z O z N 8− z s ( z = 1, 2, and 3) prepared by combustion synthesis (CS) followed by spark plasma sintering (SPS) was investigated in supercritical water at 400 °C/30 MPa for 100 h. The corrosion behavior was studied by means of gravimetry, X-ray diffraction (XRD), scanning electron microscopy (SEM)/energy dispersive X-ray spectrometer (EDS). The mass loss and corroded layer decreased with the increasing in z value, and the results of XRD showed the oxide formed on β-SiAlONs ( z = 1, 2, and 3) is aluminum silicate (Al 2 SiO 5 ). Finally, we proposed the reaction mechanism of these materials in supercritical water.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Subcritical and Supercritical Water Processes · Nuclear materials and radiation effects
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