| 摘要 |
PROBLEM TO BE SOLVED: To provide a joined body which is suitable for a cutting tool without a deterioration in joint strength of a joining layer even if the temperature of a brazing filler metal exceeds a temperature where the brazing filler metal generates a liquid phase during cutting operation, and without the need of preparing a cBN sintered compact and a diamond sintered compact which have a large grinding allowance.SOLUTION: A joined body includes: a cermet sintered compact as a first material 1 to be jointed; and a cBN sintered compact or diamond sintered compact as a second material 3 to be jointed. The first material to be jointed and the second material to be jointed are jointed to each other via a jointing material 2 that is disposed between both materials and generates a liquid phase at a temperature of more than 800°C and less than 1,000°C. The materials are jointed to one another by being subjected to energization heating while being compressed with a pressure of 0.1-200 MPa. |
