| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite body consisting of a cBN sintered body and a hard alloy, joined strongly.SOLUTION: A composite body consists of a cBN sintered body containing 20-100 mass% of cBN, a hard alloy which comprises 50-97 mass% of a hard phase comprising at least one selected from carbides, carbonitrides and of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W and their solid solutions and 3-50 mass% of a remaining binder phase based on at least one selected from Co, Ni and Fe and a joint layer between the cBN sintered body and the hard alloy. The joint layer consists of a ceramic phase and a metal phase and has a thickness of 2-30 μm. |
