| 摘要 |
PROBLEM TO BE SOLVED: To prevent separation of a coat when the thermal expansion coefficient of a cast part and that of the coat such as ceramic to be coated are different from each other, by forming a covering or coating layer against a skeleton structure to be cast together with a substrate on the surface of the substrate on the surface of the substrate, using the second material. SOLUTION: A substrate 2 has a covering 4 which can be produced using a thermal spraying technique. The formation of the covering 4 changes depending on the angle 43 at which spray jetting is done against the cast part when spraying is done on the cast part. If this angle is small, a large cavity 21 is formed between pole portions 30 in accordance with the skeleton structure. If coating is done while the cast part is rotated centering on the axis of rotation 24 orthogonal to a surface 20, a coat 42 is uniformly laminated and formed. The covering 4 of Th substrate 2 is finally composed of three areas. That is, they are an area 40, an area 41 and an area 42, which is an actual coat to be fixed to the intermediate area 41. |
