Title:
窒化珪素質焼結体及び切削インサート
Document Type and Number:
Japanese Patent JP6457647
Kind Code:
B2
Abstract:
A silicon nitride-based sintered body containing silicon nitride-based grains, which are silicon nitride grains or sialon grains. In the silicon nitride-based sintered body, when the size of each silicon nitride-based grain is represented by its maximum grain size, the ratio of the number of silicon nitride-based grains having a maximum grain size of 1 μm or less to the number of the entire silicon nitride-based grains is 70% or higher. Furthermore, in the distribution profile of no. % of silicon nitride-based grains with respect to maximum grain size, the maximum value of no. % (i.e., maximum no. %) of silicon nitride-based grains is 15 no. % or higher. Also disclosed is a cutting insert, which is formed of the silicon nitride-based sintered body.
Inventors:
Yuko Nakayama
Atsushi Komura
Atsushi Komura
Application Number:
JP2017538452A
Publication Date:
January 23, 2019
Filing Date:
March 30, 2017
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
C04B35/596; B23B27/14; C04B35/599
Domestic Patent References:
| JP8104571A | ||||
| JP7223865A | ||||
| JP2014141359A | ||||
| JP2008069031A |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation
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