Title:
COATED CUTTING TOOL
Document Type and Number:
Japanese Patent JP2018069434
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a coated cutting tool having excellent defect resistance by preventing occurrence of crack even under the condition of cutting process at high temperature and thereby capable of extending a tool life.SOLUTION: There is provided a coated cutting tool comprising a base material and a coated layer formed on the surface of the base material. The coated layer includes at least one layer of α type aluminum oxide whose composition coefficient TC(1,1,9) of (1,1,9) plane represented by expression (1) described below is 1.4 or more (in the expression (1), I(h,k,l) is the peak intensity of (h,k,l) plane in X-ray diffraction of the α type aluminum oxide layer; I(h,k,l) is the standard diffraction intensity of (h,k,l) plane in JCPDS card number 10-0173 of the α type aluminum oxide; and (h,k,l) indicates the crystal plane of 8 planes, (0,1,2), (1,0,4), (1,1,0), (1,1,3), (0,2,4), (1,1,6), (2,1,4) and (1,1,9).SELECTED DRAWING: None
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Inventors:
SATO HIROYUKI
Application Number:
JP2016216462A
Publication Date:
May 10, 2018
Filing Date:
November 04, 2016
Export Citation:
Assignee:
TUNGALOY CORP
International Classes:
B23B27/14; B23B51/00; B23C5/16; C23C16/40
Domestic Patent References:
| JPH09507528A | 1997-07-29 | |||
| JP2016137564A | 2016-08-04 | |||
| JP2015009358A | 2015-01-19 | |||
| JP5872746B1 | 2016-03-01 | |||
| JP2007125686A | 2007-05-24 |
Foreign References:
| WO2015030073A1 | 2015-03-05 | |||
| WO2015093530A1 | 2015-06-25 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
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