Coated cutting tool

Patent metadata

Field	Value
Publication number	US-2020038964-A1
Application number	US-201716344032-A
Country	US
Kind code	A1
Filing date	Oct 6, 2017
Priority date	Oct 25, 2016
Publication date	Feb 6, 2020
Grant date	—

Abstract

A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, wherein: the coating layer comprises at least one α-type aluminum oxide layer; and, in the α-type aluminum oxide layer, a texture coefficient TC (0,0,12) of a (0,0,12) plane is from 4.0 or more to 8.4 or less, and a texture coefficient TC (1,2,11) of a (1,2,11) plane is from 0.5 or more to 3.0 or less.

First claim

1 . A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, wherein:
the coating layer comprises at least one α-type aluminum oxide layer; and in the α-type aluminum oxide layer, a texture coefficient TC (0,0,12) of a (0,0,12) plane represented by formula (1) below is from 4.0 or more to 8.4 or less, and a texture coefficient TC (1,2,11) of a (1,2,11) plane represented by formula (2) below is from 0.5 or more to 3.0 or less.

TC


(

0
,
0
,
12

)

=

I


(

0
,
0
,
12

)

I
0



(

0
,
0
,
12

)



{

1
9



∑

I


(

h
,
k
,
l

)

I
0



(

h
,
k
,
l

)

}

-
1

(
1
)

TC


(

1
,
2
,
11

)

=

I


(

1
,
2
,
11

)

I
0



(

1
,
2
,
11

)



{

1
9



∑

I


(

h
,
k
,
l

)

I
0



(

h
,
k
,
l

)

}

-
1

(
2
)

Assignees

• Tungaloy Corp

Inventors

• Satoh Hiroyuki
• Hirano Yusuke

Classifications

• C23C28/042

  including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides · CPC title

• C23C30/005

  on hard metal substrates · CPC title

• B23B51/00

  Tools for drilling machines · CPC title

• B23C5/20

  with removable cutter bits or teeth {or cutting inserts} · CPC title

• C23C16/403

  of aluminium, magnesium or beryllium · CPC title