简介:Bycalculatingtheelectronstructuresofthephasesthatphosphor,sulfurandalloyingelementsdissolvinginγ-Fe,thereasonwhyalloyingelementscanbringcenterlinesegregationincontinuouscastingslab(CCS)withnA,thenumberofelectronsonthestrongestcovalentbonds,andthestructureformationfactorSwereinvestigated,andanelectronstructuralcriteriontocontrolandtoeliminatethecenterlinesegregationwasadvanced.Basingonthis,theelectronstructuresofapartofrareearthphosphidesandsulfidesarecalculated,thephysicalmechanismthatrareearthelementscancontrolthesegregationofphosphorandsulfurisanalyzed,andthecriterioniswellverified.