| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a joined body where there is no reduction in the joining strength of a joining layer even when the temperature of a brazing filler metal becomes high temperature exceeding a temperature generating a liquid phase during machining, and there is no need of preparing a cBN sintered compact and a diamond sintered compact having high grinding margins, and which is suitable as a cutting tool. <P>SOLUTION: In the joined body, a cemented carbide sintered compact is used as a first material 1 to be joined, and a cBN sintered compact or a diamond sintered compact is used as a second material 3 to be joined. The first material to be joined and the second material to be joined are joined across a joining material 2 installed between both and generating a liquid phase at a temperature in the range of >800 to <1,000°C, and the joining is performed by carrying out conduction heating while performing pressurizing under the pressure of 0.1 to 200 MPa. <P>COPYRIGHT: (C)2011,JPO&INPIT |
