ABSTRACT
Boron inhibition of the steam oxidation at 873K of an Fe-10%Cr steel and a Fe-9%Cr 1 % Mo alloy has been studied by TEM and EELS examination of the composition and structure of the oxide films formed. Protective behaviour appears to derive from the rapid formation of an ultrafine grained (CrxB1-x)2O3, film. The paper discusses the mechanism by which this film formed and how it provided continuing oxidation resistance.
