High toughness cermet for cutting tool

Abstract

Abstract PURPOSE:To obtain the titled cermet having a high degree of sintering and high toughness and showing superior cutting performance when used as the material of a heavy cutting tool by compacting and sintering powders of the composite metallic carbonitride of Ti and W, AlN and W. CONSTITUTION:This high toughness cermet for a cutting tool has a composition consisting of 15-45wt% composite metallic carbonitride of Ti and W, 0.5-5wt% >=1 kind among AlN, Si3N4 and SiC, and the balance W with inevitable impurities. To the composition may be added 1-10wt% TiN. The cermet is obtd. by mixing the required amounts of powders of (Ti, W)CN, AlN, Si3N4, SiC, TiN and W, compacting the mixture, and sintering the green compact at about 2,200 deg.C in vacuum. Since W as the component of a binding phase in the cermet and the components of a hard dispersed phase are made fine, the cermet shows superior wear resistance and high toughness when used as the material of a heavy cutting tool for cutting steel, etc.

Inventors

• 👤 Kenichi Nishigaki
• 👤 賢一 西垣
• 👤 Katsuaki Anzai
• 👤 安在　克章
• 👤 Hironori Yoshimura
• 👤 吉村　寛範
• 👤 Taijiro Sugisawa
• 👤 杉澤　泰次郎

Bibliographic Details