Mechanism study on the formation of liquid calcium aluminate inclusion from MgO.Al(2)O(3) Spinel
2006 (English)In: Steel Research International, ISSN 1611-3683, Vol. 77, no 11, 785-792 p.Article in journal (Refereed) Published
A study on the formation mechanism of liquid calcium aluminate inclusions from MgO center dot Al2O3 spinel was carried out. It was found that spinel reacted with dissolved Ca in liquid steel forming liquid calcium aluminate phase. Stability calculations showed good agreement with the experimental result. According to the thermodynamic calculation, liquid calcium aluminate inclusions would form from spinel even at very low level of dissolved Ca content at 1873 K. At lower temperatures, the compound CaO center dot 2Al(2)O(3) was found to be the stable phase at the spinel-metal interface. Potential sources of dissolved Ca during ladle processes were also discussed.
Place, publisher, year, edition, pages
2006. Vol. 77, no 11, 785-792 p.
Al deoxidation; Calcium aluminate; Ladle process; Liquid inclusion; Spinel; Dissolution; Interfaces (materials); Magnesium compounds; Thermal effects; Thermodynamics; Aluminum compounds
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-6819ISI: 000242924200004ScopusID: 2-s2.0-33751395874OAI: oai:DiVA.org:kth-6819DiVA: diva2:11637
QC 201008032007-02-282007-02-282012-03-21Bibliographically approved