Coating material for thermal spray coating, method for preparing the same, and method for coating with the same

Abstract

A coating material for a thermal spray coating having corrosion resistance and low reactivity, a preparation method thereof, and a coating method thereof are provided. The coating material for thermal spray coating has a composition of Mg 1−x Y 2x O 2x+1 (where x is 0.01 to 0.99).

What is claimed is: 
     
         1 . A coating material for thermal spray coating having a composition of Mg 1−x Y 2x O 2x+1  (where x is 0.01 to 0.99). 
     
     
         2 . The coating material for thermal spray coating of  claim 1 , wherein x is 0.1 to 0.5. 
     
     
         3 . The coating material for thermal spray coating of  claim 1 , wherein the coating material includes a powder having a diameter of 1 to 200 μm. 
     
     
         4 . A method for preparing a coating material for thermal spray coating, the method comprising:
 mixing a MgO powder having a diameter of 0.1 to 30 μm and a Y 2 O 3  powder having a diameter of 0.1 to 30 μm to prepare a material having a composition of Mg 1−x Y 2x O 2x+1  (where x is 0.01 to 0.99); and   spraying and drying the material to prepare a synthesized coating material for thermal spray coating.   
     
     
         5 . The method of  claim 4 , wherein x is 0.1 to 0.5. 
     
     
         6 . The method of  claim 4 , further comprising subjecting the coating material for thermal spray coating to a thermal treatment at 900 to 1500° C. 
     
     
         7 . A method for coating with a coating material for thermal spray coating, the method comprising:
 providing a coating material for thermal spray coating having a composition of Mg 1−x Y 2x O 2x+1  (where x is 0.01 to 0.99);   injecting the coating material for thermal spray coating toward a plasma jet, followed by heating; and   depositing the coating material for thermal spray coating in a completely molten or semi-solid state on a surface of a base metal to form a coating film.   
     
     
         8 . The method of  claim 7 , wherein x is 0.1 to 0.5. 
     
     
         9 . The method of  claim 7 , wherein in the forming of the coating film, the base metal is a chamber of vacuum plasma equipment or a part inside the chamber.