Title:
SURFACE COAT BORON NITRIDE SINTERED BODY TOOL
Document Type and Number:
Japanese Patent JP2015085465
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a surface coat boron nitride sintered body tool having superior working accuracy.SOLUTION: A surface coat boron nitride sintered body tool includes a cubic crystal boron nitride sintered body and a coated film formed on the cubic crystal boron nitride sintered body, the coated film includes A layer and C layer, the A layer is represented by TiMaCN(therein, Ma is one kind or more of Cr, Nb and W, xa is 0≤xa≤0.7, ya is 0≤ya≤1), the C layer is represented by AlCrMcN (therein, Mc is one kind or more of Ti, V and Si, xc is 0.2≤xc≤0.8, yc is 0≤yc≤0.6, and xc+yc is 0.2≤xc+yc≤0.8), the A layer is formed between the outermost surface of the coated film or between the outermost surface of the coated film and C layer, and a distance between the outermost surface of the coated film and an upper surface of the C layer is 0.1 to 1.0 μm.
Inventors:
TSUKIHARA NOZOMI
SETOYAMA MAKOTO
OKAMURA KATSUMI
SETOYAMA MAKOTO
OKAMURA KATSUMI
Application Number:
JP2013227077A
Publication Date:
May 07, 2015
Filing Date:
October 31, 2013
Export Citation:
Assignee:
SUMITOMO ELEC HARDMETAL CORP
International Classes:
B23B27/14; C04B41/89; C23C14/06
Attorney, Agent or Firm:
Fukami patent office