This paper deals with phenomenon study linked with zirconium alloys oxidati
on used in Nuclear Industry. The studied alloy is ZrNb1% oxidized under oxy
gen at 470 degrees C. The qualitative and quantitative studies of texture l
ead to characterization of planes which are mainly oriented parallel to sur
face sample. The hypothesis which is that no texture gradient exist, could
be checked. Moreother, by variable incidence X-ray, the tetragonal phase ca
n be localized.