Irradiation-Accelerated Corrosion of Reactor Core Materials. Final Report

摘要: This project aims to understand how radiation accelerates corrosion of reactor core materials. The combination high temperature, chemically aggressive coolants, a flux and mechanical stress poses major challenge for the life extension current light water reactors, as well success most all GenIV concepts. Of these four drivers, places severe demands on materials, which an understanding fundamental science is simply absent. Only few experiments have been conducted occurs under irradiation, yet limited data indicates that effect large; irradiation causes order magnitude increases in rates. Without firm mechanisms by interact film formation, growth, breakdown repair, LWR fleet beyond 60 years advanced nuclear energy systems are questionable. proposed work will address process irradiation-accelerated important designs, but remains very poorly understood. An improved role provide community with tools develop predictive modelsmore » in-reactor corrosion, specific, forms such assisted cracking.« less