Title:
被覆切削工具およびその製造方法
Document Type and Number:
Japanese Patent JP4437353
Kind Code:
B2
Abstract:
There are disclosed a coated cutting tool which comprises a base material of a hard alloy comprising a hard phase of tungsten carbide and at least one material selected from a carbide, nitride and carbonitride of a metal selected from the Group 4, 5 and 6 of the Periodic Table and a mutual solid solution thereof and a binder phase of at least one element selected from Fe, Ni and Co, and a hard coating film formed on the surface of the base material by a CVD method, wherein the hard coating film has a columnar crystal layer comprising at least one material selected from a carbide, nitride and carbonitride of titanium, the columnar crystal layer contains large-sized particles and small-sized particles, and the ratio of the amounts of the large particles to the small particles is 3 to 50; and a method for producing the same which comprises forming the hard coating film by at least one coating film of a carbide, carbonitride and carbonitroxide of titanium using a hydrocarbon gas containing ethane as a carbon element-feeding gas.
Inventors:
Kou Kodama
Yoshikawa Nobukazu
Yazaki Itsuo
Yoshikawa Nobukazu
Yazaki Itsuo
Application Number:
JP2000094464A
Publication Date:
March 24, 2010
Filing Date:
March 30, 2000
Export Citation:
Assignee:
Tungaloy Co., Ltd.
International Classes:
B23B27/14; B23P15/28; C23C16/30; C23C16/32; C23C16/34; C23C16/36
Domestic Patent References:
| JP6008009A | ||||
| JP63270467A | ||||
| JP9029512A | ||||
| JP2000158209A |