Die Oxydation von NO zu NO₂, bei der Bestimmung von NO,‐Emissionen nach der Saltzman‐Methode

Anomalous oxidation of Fe–Si alloys under a low oxygen pressure at 800 °C

“…2c-2e). Actually, the structure of the zone formed between the SiO 2 layer and the gas phase was different from the classical model of internal oxidation [23,24] for different reasons, thus presenting an anomalous internal oxidation zone. In fact, the SiO 2 particles in the ioz were not only spherical, with radii ranging from tens to several hundreds of nm, but also vermicular.…”

“…As the concentration of B increases, the internal oxide particles dispersed in the ioz tend to develop a continuous external BO ν layer: the critical concentration of B (mole fraction) required for the transition from the internal to the external oxidation of B is denoted as N B°* [23,30,31].…”