| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a burning tool of which resistance to peeling of a coating layer at its edge part has been improved. <P>SOLUTION: The burning tool comprises a substrate 2 and at least one coating layer 3 which has a thermal expansion coefficient higher than that of the substrate and is formed on one side of the substrate. At the peripheral edge part of the substrate surface 2a coated with the coating layer 3, a projection 2b higher than the thickness of the coating layer 3 is formed all over the peripheral edge part. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
