Corrosion monitoring and determination of aluminium fuel clad of Tehran Research Reactor (TRR)

Aluminium alloys are used as cladding materials for fuel plates in many research reactors. In this work, which carried out in-pool tests corrosion surveillance coupons were used.Aluminium alloys and stainless steel had been coupons in form of circular disks were exposed to the pool water for six months.Metallographic examinations of aluminium coupons from the corrosion rack are carried out under a reflected optical microscope equipped with camera for investigation of pits width, depth and various corrosion defects.Pitting was the dominate form of corrosion.