Comportement du titane dans les mélanges hydrogène - vapeur d'eau au-dessus de 800°C.

International audienceThe oxidation scale obtained by oxidizing titanium foills in water vapour above 800°C is mainly composed of porous rutile. As the reaction proceeds, a solid solution of Tialpha precipitates leading to an intermediate suboxide scale of variable composition TiOx. In connection with the microstructural study, it can be concluded that the rutile scale grows at the inner interface TiO2/TiOx thus excluding the possibility of a rate-determining diffusion step