| 摘要 |
PROBLEM TO BE SOLVED: To provide a joined body in which the joining strength of a joining layer is not deteriorated even when the temperature of a brazing material is increased to exceed the level of producing the liquid phase during cutting, and favorably used as a cutting tool having no need to prepare a cBN sintered body or a diamond sintered body both of which are costly for cutting. SOLUTION: The joined body is formed from a cermet sintered body as a first joined material 1 and the cBN sintered body or the diamond sintered body as a second joined material 3. The first joined material and the second joined material are joined with the aid of a joining material 2 interposed between the two materials and producing the liquid phase at a temperature more than 800°C and less than 1000°C. The joining is made by electrical heating while pressurizing with a pressure of 0.1-200 MPa. COPYRIGHT: (C)2011,JPO&INPIT |
