Title:
SILICON NITRIDE SINTERED BODY AND WEAR-RESISTANT MEMBER USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/176500
Kind Code:
A1
Abstract:
Provided are a silicon nitride sintered body having improved wear resistance and a wear-resistant member in which the silicon nitride sintered body is used. A silicon nitride sintered body according to an embodiment of the present embodiment comprises silicon nitride crystal grains and a grain boundary phase. In a 20 µm × 20 µm region of an arbitrary cross-section, the average value of the amount of solute oxygen in the silicon nitride crystal grains is 0.2 wt% or more. In a 50 µm × 50 µm region of an arbitrary cross-section, the average value of the major axis of the silicon nitride crystal grains is from 0.1 µm to 10 µm, and the average value of the aspect ratio of the silicon nitride crystal grains is from 1.5 to 10.
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Inventors:
AOKI KATSUYUKI (JP)
FUKASAWA TAKAYUKI (JP)
HOUTSUKI NAOTO (JP)
YAMAGATA YOSHIHITO (JP)
IWAI KENTARO (JP)
FUKASAWA TAKAYUKI (JP)
HOUTSUKI NAOTO (JP)
YAMAGATA YOSHIHITO (JP)
IWAI KENTARO (JP)
Application Number:
PCT/JP2023/007996
Publication Date:
September 21, 2023
Filing Date:
March 03, 2023
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA MATERIALS CO LTD (JP)
TOSHIBA MATERIALS CO LTD (JP)
International Classes:
C04B35/587; F16C33/32; F16C33/34
Domestic Patent References:
| WO2006118003A1 | 2006-11-09 | |||
| WO2016047376A1 | 2016-03-31 |
Foreign References:
| JP2002097005A | 2002-04-02 | |||
| JPH09295868A | 1997-11-18 | |||
| JP2018024548A | 2018-02-15 | |||
| JPH03177307A | 1991-08-01 | |||
| JP2022071426A | 2022-05-16 | |||
| JP5362758B2 | 2013-12-11 | |||
| JP6400478B2 | 2018-10-03 | |||
| JP2022071426A | 2022-05-16 |
Attorney, Agent or Firm:
IX PATENT LAW FIRM, P.C. (JP)
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