| 摘要 |
PURPOSE: A bonding structure and bonding method for a cemented carbide member and a diamond member, a cutting piece for a drilling tool, a cutting member, and the drilling tool are provided to enhance the bonding strength between the cemented carbide member and the diamond member. CONSTITUTION: A cutting piece for a drilling tool includes a cemented carbide cutting base(11), a diamond member(12) supported by the cutting base, and a bonding layer(13) formed between the cutting base and the diamond member in order to bond the cutting base and the diamond member. The bonding layer includes diffusion layers in which one or two or more metals selected among Fe, Ni, Co, Ti, Zr, W, V, Nb, Ta, Cr, Mo, and Hf diffuse into at least one of the cemented carbide or the diamond. |
