CUBIC ALUMINUM TITANIUM NITRIDE COATING AND METHOD FOR MANUFACTURING THE SAME

Title:

CUBIC ALUMINUM TITANIUM NITRIDE COATING AND METHOD FOR MANUFACTURING THE SAME

Document Type and Number:

Japanese Patent JP2012161909

Kind Code:

A

Abstract:

To provide a cubic aluminum titanium nitride coating and a method for manufacturing the same.

A coated cutting tool has hard coating including at least one aluminum titanium nitride layer having a B1 cubic phase single layer structure and composition (Al_xTi_1-x)N wherein x is in the range of about 0.46 to about 0.52 mol. The hard coating has residual stress in the range of about -0.4 to about -3 GPa when measured by an XRD Sin²ψ method and a crystal orientation characterized by a ratio of (200) peak intensity to (111) peak intensity by X-ray diffraction being in the range of about 1 to about 14. The aluminum titanium nitride layer is preferably in the range of about 15 to about 50 nanometers of an average crystallite size. The method for manufacturing the coated cutting tool is also disclosed.

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Inventors:

NI WANGYANG
BAN ZHIGANG
RONALD M PENICH
LIU YIXIONG

Application Number:

JP2012016419A

Publication Date:

August 30, 2012

Filing Date:

January 30, 2012

Export Citation:

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Assignee:

KENNAMETAL INC

International Classes:

B23B27/14; B23B51/00; B23C5/16; B23P15/28; C23C14/06

Attorney, Agent or Firm:

Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto

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