Papers by Keyword: Oxygen Transport

Abstract: Drying of lignite alters the physical and chemical structure of coal, and influences the oxygen transport on the low temperature oxidation process. This paper provides a comprehensive overview on low-temperature oxidation of lignite and its dried products, including oxygen transport during the oxidation process, changes of physical structure and chemical compositions occurring at the drying process and its effects on the oxygen transport, and restraint of dried lignite oxidation.

Abstract: High temperature anneal of SOI wafers in oxygen-free atmosphere results in internal buried oxide dissolution and top Si layer etching. Dissolution rate is determined by interstitial oxygen diffusion through the top Si layer and evaporation from the top Si surface in the form of SiO. It has been observed that kinetics of the process follows linear-parabolic law. Simple thermodynamic model is proposed, which explains observed dependences on temperature and top Si layer thickness.