عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Recently, it has been declared that fuel rods do not need to be anodized for the usage in VVER reactors. In this regard, some studies were planned to investigate the effects of pickling and anodizing treatments on corrosion behaviour of the fuel clads produced by Sooreh company. For this reason, different surface treated samples of as-received, grinded, pickled, grinded and anodized, and pickled and anodized were prepared. The Russian fuel clads in some equal conditions were also employed for comparisons. The results revealed that corrosion behaviour is completely effected by the surface treatment, and microstructure properties have less impact. The oxidation type in the pickled, and pickled and anodized samples are absolutely different from the grinded samples. The anodizing treatment after pickling nearly increases the corrosion resistance by two times in comparison to just pickled ones. The presence of grey oxide layer on the grinded samples are attributed to Monoclinic zirconia which has less corrosion resistance to Tetragonal zirconia.
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