BONDING METHOD FOR CEMENTED CARBIDE MEMBER AND DIAMOND MEMBER, BONDING STRUCTURE, CUTTING BLADE CHIP FOR DRILLING TOOL, CUTTING BLADE MEMBER, AND DRILLING TOOL

摘要

PROBLEM TO BE SOLVED: To provide a bonding method for increasing bonding strength for a member made of cemented carbide and a member made of diamond, a bonding structure, a cutting blade chip for drilling tool, a cutting blade member, and a drilling tool.;SOLUTION: The cutting blade chip used for the cutting blade of the drilling tool has a structure comprising a cutting blade body part 11 made of the cemented carbide (the cemented carbide member), the member 12 made of diamond supported by the cutting blade body part 11, and a metal layer 13 that is arranged between the cutting blade body part 11 and the diamond member 12 and diffusion-bonded with them respectively. The metal layer 13 is composed of one kind of metal among Ti, Zr and W, or an alloy made from two or more kinds among these metals.;COPYRIGHT: (C)2005,JPO&NCIPI