Oxide scale zirconium alloy

As the time of oxidation at 1200°C increases, the ridged structure coarsens. The ridges become higher and wider, and the flat areas between the ridges gradually disappear. Yttrium and zirconium alloy additions slow the development of the ridges and reduce to some degree the extent of outward aluminum diffusion [13]. These thick scales formed by sequential oxidation... 

The investigated result of oxidation behavior in still air at 800 °C of BTl-0 based titanium alloys containing silicon, aluminium and zirconium shown that at oxidation the process of the scale formation and process of the gas saturation take place together. The parabolic law describes the common oxidation rate without dependence from duration exposure. The main influence on heat resistance makes silicon with content to 2 wt. %. This effect is connected with breaking the diffusion process in metal and scale. 

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