The development of accident tolerant fuel (ATF) have been launched worldwide to enhance accident tolerance in light water reactors[1,2]. ATFs, in comparison with the standard UO2-Zr system, can provide larger safety margins by reducing the oxidation rate of Zr-based alloy cladding in high temperature water vapor and increasing the coping time after a loss of coolant accident (LOCA) scenario. In a design-basis LOCA, the maximum oxidation allowed to the zirconium alloy is 17% of the tube wall thickness, which takes 20 min at 1100 ℃ and only 8 min at 1200 ℃. A prospective solution is the substitution of Zr alloys with advanced cladding materials or use of protective coatings, which is meant to provide short-term additional protection to the zirconium alloy cladding at high temperature. Surface-modified zircaloy cladding are regarded as a competitive concept with the merits of convenience and economics[4,5].