High temperature oxidation of chromium: Kinetic modeling and microstructural investigation
Artikel i vetenskaplig tidskrift, 2013

Using CALPHAD methods, Cr2O3 growth on pure Cr is modeled using DICTRA and the vacancy model for diffusion. The results are compared with thermobalance and TEM experiments at 625 and 700 degrees C in O-2. The experimental scatter is significant, leading to a compromise suggestion. With the experimental conditions from the furnace exposures in this work, optimized mobilities are validated with a series of oxidation simulations. Despite the complex microstructure and initial growth rate variations, it is possible to reproduce the experimental oxide thicknesses with good accuracy, allowing for extension to multicomponent systems.

SEM

TEM

Stainless steel

Kinetic parameters

High temperature corrosion

Författare

Samuel Hallström

Thermo-Calc Software AB

Mats Halvarsson

Chalmers, Teknisk fysik, Materialens mikrostruktur

L. Hoglund

Kungliga Tekniska Högskolan (KTH)

Torbjörn Jonsson

Chalmers, Kemi- och bioteknik, Oorganisk miljökemi

John Ågren

Kungliga Tekniska Högskolan (KTH)

Solid State Ionics

0167-2738 (ISSN)

Vol. 240 41-50

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Materialvetenskap

Ämneskategorier

Materialkemi

Metallurgi och metalliska material

DOI

10.1016/j.ssi.2013.02.017