Title of article :
Effect of yttrium addition by sol–gel coating and ion implantation on the high temperature oxidation behaviour of the 304 steel
Author/Authors :
F Riffard، نويسنده , , H Buscail، نويسنده , , E Caudron، نويسنده , ,
R. Cueff، نويسنده , , C Issartel، نويسنده , , S Perrier، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Abstract :
The beneficial effect of yttrium addition on the oxidation behaviour of the 304 stainless steel, under isothermal conditions at 1000 °C in air, has been investigated. Two modes of introduction of the reactive element were studied, ion implantation and sol–gel coating. The thermogravimetric results show in both cases a significant reduction of the scale growth rate. In situ X-ray diffraction (XRD) technique reveals that this reduced oxidation rate is owing to the inhibition of the growth of iron-rich oxides. The present results support that yttrium promotes the intensive formation of the thin protective continuous chromia rich layer at the oxide–metal interface which acts as a diffusion barrier for iron. The study also underlines a cooling effect on the oxide scale composition.
Keywords :
Stainless steel , Ion implantation , Sol–gel coating , Yttrium , Oxidation , High temperature
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science