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Reactive Filters for Steel Melt Filtration
Author(s) -
Aneziris Christos G.,
Dudczig Steffen,
Emmel Marcus,
Berek Harry,
Schmidt Gert,
Hubalkova Jana
Publication year - 2013
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201200199
Subject(s) - materials science , filtration (mathematics) , carbon steel , oxygen , casting , metallurgy , coating , carbon fibers , water vapor , continuous casting , liquid steel , composite material , corrosion , statistics , chemistry , mathematics , physics , organic chemistry , composite number , meteorology
New carbon bonded Al 2 O 3 filters with Magnesia–carbon (MgO–C) “reactive coatings” for high filtration efficiency of steel melts are studied with the aid of a special steel casting simulator in full controlled atmosphere. Due to the in situ reduction of MgO in the MgO–C coating and the formation of Mg vapor a reaction with the oxygen dissolved in the steel melt is triggered and leads to the formation of secondary MgO on the filter surface. With this approach not only primary and secondary inclusions can be effectively removed from the steel melt, but as well as less tertiary and quartenary inclusions can be expected due to less oxygen dissolved in the steel melt.