Abstract
This paper describes the effect of surface modification by high-intensity Ti-ion implantation on the high-temperature oxidation resistance of E110 zirconium alloy. The oxidation tests were performed in air at 873 K for 10 h and in water steam at 1373 K for 10 min. The microstructure, phase composition and depth distribution of elements were analysed using scanning electron microscopy, X-ray diffraction and glow-discharge optical emission spectroscopy, respectively.
Highlights
The accident at the Fukushima Daiichi power plant occurred in 2011 gave impetus to international research on the development of protective coatings for nuclear cladding tubes [1]
Besides zirconium claddings are resistant to corrosion and oxidation under the normal operating temperature, they cannot ensure the protection of light-water reactors under loss-of-coolant accident (LOCA) conditions
The high-temperature corrosion behavior of E110 zirconium alloy with a surface modified layer formed by high-intensity ion implantation was considered
Summary
The accident at the Fukushima Daiichi power plant occurred in 2011 gave impetus to international research on the development of protective coatings for nuclear cladding tubes [1]. Besides zirconium claddings are resistant to corrosion and oxidation under the normal operating temperature, they cannot ensure the protection of light-water reactors under loss-of-coolant accident (LOCA) conditions. The accelerated corrosion reaction in water steam at 1373-1473 K leads to generation of explosive hydrogen and degradation of mechanical properties of nuclear fuel claddings. A high-intensity implantation of low-energy titanium ions can be implemented to form a deep modified layer providing enhanced mechanical and tribological properties of zirconium alloys [6]. The oxidation resistance of the Ti-doped surface modified zirconium alloy has not been studied. The high-temperature corrosion behavior of E110 zirconium alloy with a surface modified layer formed by high-intensity ion implantation was considered
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