/ / METHOD FOR MANUFACTURING CORE/SHELL COMPLEX POWDER FOR THERMAL BARRIER COATING AND THE CORE/SHELL COMPLEX PREPARED BY THE SAME

摘要

The present invention relates to a method to manufacture core/shell complex powder for thermal shield coating and a core/shell complex manufactured through the same. More specifically, the present invention includes a core including La_2Zr_2O_7 and a shell including YSZ surrounding the same, and thus the present invention is capable of manufacturing a core/shell complex for thermal shield coating, having excellent thermal durability as well as excellent thermal shield performance. The core/shell complex, manufactured through the method of the present invention, is capable of suppressing exfoliation or cracks when operated in a high temperature environment after being thermally sprayed onto the surface of a bond layer by having excellent mechanical properties of the shell and having a small difference in thermal expansion coefficient from the material for the bond layer. The present invention has a low thermal conductivity of the core and makes a small phase change at a high temperature, and thus the present invention has an excellent thermal shield effect and suits thermal shield coating.