Formation of Oxide Scales on Zirconium Diboride-Silicon Carbide Composites During Oxidation: Relation of Subscale Recession to Liquid Oxide Flow
نویسندگان
چکیده
منابع مشابه
Modelling of an Artificial Neural Network for Electrical Discharge Machining of Hot Pressed Zirconium Diboride-silicon Carbide Composites
Modelling is carried out to map the relationship between the input process parameters and the output response, considered in the machining process. To represent real-world systems of considerable complexity, an artificial neural network (ANN) model is often utilized to replace the mathematical approximation of the relationship. This paper explains the methodological procedure and the outcome of...
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Microstructures of oxide scales thermally formed on single-crystal silicon carbide were investigated using transmission electron microscopy. The oxide scales were formed on the Si-face of 6H-SiC at 1273-1473 K in dry oxygen. Spherical patterns were observed on the surfaces of the oxidized samples by an optical microscope in some regions. In these regions, cross-sectional transmission electron m...
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Phase stabilities of Hf-Si-O and Zr-Si-O have been studied with first-principles and thermodynamic modeling. From the obtained thermodynamic descriptions, phase diagrams pertinent to thin film processing were calculated. We found that the relative stability of the metal silicates with respect to their binary oxides plays a critical role in silicide formation. It was observed that both the HfO2/...
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چکیده ندارد.
15 صفحه اولFormation of Molybdenum Oxide Nano-whiskers during Heating Compressed Powder
In this study the synthesis of molybdenum oxide nano-whiskers with circular cross-section is performed. In some areas, it was observed that also some whiskers have open tips exhibiting their hollow structures. These whiskers have side dimensions ranging 2-5 μm with an average diameter in the nanometer rang. The structure suggested the vapor-liquid-solid growth mechanism (VLS). Scanning elect...
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ژورنال
عنوان ژورنال: Journal of the American Ceramic Society
سال: 2008
ISSN: 0002-7820,1551-2916
DOI: 10.1111/j.1551-2916.2008.02639.x