Surface coated cermet member for cutting tool

Abstract

Abstract PURPOSE:To develop a surface coated cermet member excellent in impact resistance and suitable for high speed cutting, by forming a hard layer comprising Ti-nitride to the surface of the cermet member having a specific composition through a TiC-layer in which components for forming the bonding phase of the cermet member are diffused. CONSTITUTION:Onto a cermet layer which contains 60-95% of carbonitride solid solution of Ti, W and a metal M belonging to the Groups 4a, 5a and 6a of the Periodic Table except Ti and W (Ti, M W) CN, one or more of 1-20% of Mo, 1-20% of W and 0.1-2% of Al and one or more of Ni or Co as the component of a similar bonding phase, a TiC-layer, in which the above mentioned components of the bonding phase are diffused, is formed in a thickness of 0.5- 10mum. In addition, a single layer comprising TiN, TiCN, TiCO, TiCNO and Al2O3 or plural layers comprising two or more of said components are formed thereon in a thickness of 0.5-10mum.

Inventors

• 👤 Hironori Yoshimura
• 👤 吉村　寛範
• 👤 Teruyoshi Tanase
• 👤 照義 棚瀬
• 👤 Junichi Toyama
• 👤 外山　順一
• 👤 Munenori Nakajima
• 👤 中島　宗紀

Bibliographic Details