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An experimental and computational technique suitable for characterisation of oxides
RISE, Swerea, Swerea KIMAB.
RISE, Swerea, Swerea KIMAB.
2013 (English)In: International Powder Metallurgy Congress and Exhibition, Euro PM 2013, European Powder Metallurgy Association (EPMA) , 2013Conference paper, Published paper (Refereed)
Abstract [en]

Understanding of oxide stability is important for processing of sintered steels. The stability of an oxide depends on the alloy composition, temperature and environment for oxidation. The type of oxide and its range of stability can be predicted by thermodynamic calculations. The reactive character of oxygen with metal is a natural difficulty for a thermodynamic study of oxides. In this work, an experimental and computational technique has been developed, allowing for an evaluation of oxide stability. Oxidation results of Fe-Cr-Mn-Si alloys in Ar/H2 atmospheres will be presented, and compared with calculations. Oxidised Fe-6Cr-3Mn-(0-0.1)Si alloys show mainly a spinel oxide with the formula (Fe,Mn)Cr2O4. Silicon is found in separate oxides, rather than combined Cr-Mn-Si oxides. At low partial pressures it appears to be quartz types of oxide SiO2, and at higher partial pressures olivine (Fe,Mn)2SiO4.

Place, publisher, year, edition, pages
European Powder Metallurgy Association (EPMA) , 2013.
Keywords [en]
Fe-Cr-Mn-Si, Oxide stability, Thermodynamic calculations
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-12929ISBN: 9781899072408 (print)OAI: oai:DiVA.org:ri-12929DiVA, id: diva2:973122
Conference
International Powder Metallurgy Congress and Exhibition, Euro PM 2013, 15 September 2013 through 18 September 2013, 110976
Available from: 2016-09-22 Created: 2016-09-22Bibliographically approved

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