Zirconium alloy with coating layer containing mixed layer formed on surface, and preparation method thereof

The present invention relates to a zirconium alloy, and a manufacturing method thereof, a coating layer is formed comprising a mixed layer on the surface, in particular, zirconium alloys of this invention having a coating layer on the surface, the coating layer contains a mixed layer, is the mixed layer Al The zirconium alloy of the invention as well as the steady-state has an excellent oxidation resistance in high temperature accident environment, because of the mixed layer to form the crude grades gradient that can suppress the physical damage such as cracks, peeling between the coating layer and the zirconium alloy base material there is an effect. In particular, the manufacturing method of zirconium alloy coating layer is formed comprising a mixed layer on the surface using a laser of the present invention by controlling the laser head or the stage in the three axis and the rotation, as well as plate-like, tubular, curved many support grid in the form of zirconium can be readily coated in the alloy, there is an effect that it is possible easily to control the thickness of the coating layer to the tissue and supply the laser heat source of particles to be coated.