Title:
SINTERED BODY, POWDER, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2020/217942
Kind Code:
A1
Abstract:
Provided are at least any one of a raw material for obtaining a zirconia sintered body which is obtained by pressureless sintering and has a high fracture toughness value measured by the SEPB method, a sintered body obtained by the raw material, and a method for producing the same. The sintered body is characterized by comprising zirconia which contains a stabilizer and having a monoclinic ratio of 0.5% or more. Such a sintered body is preferably obtained by a production method which is characterized by using a powder characterized by comprising a stabilizer and containing zirconia having a monoclinic ratio of over 70%, and in that the monoclinic zirconia has a crystallite diameter of over 23 nm and 80 nm or less.
Inventors:
MATSUI KOJI (JP)
HOSOI KOHEI (JP)
HOSOI KOHEI (JP)
Application Number:
PCT/JP2020/015468
Publication Date:
October 29, 2020
Filing Date:
April 06, 2020
Export Citation:
Assignee:
TOSOH CORP (JP)
International Classes:
C04B35/488; C01G25/00; C04B35/486
Foreign References:
| JP2003128461A | 2003-05-08 | |||
| JPH11240757A | 1999-09-07 | |||
| JP2010105892A | 2010-05-13 | |||
| JP2006240928A | 2006-09-14 | |||
| JP2008081325A | 2008-04-10 | |||
| JP2008024555A | 2008-02-07 | |||
| JP2003192452A | 2003-07-09 | |||
| JP2004182554A | 2004-07-02 | |||
| JP2017226555A | 2017-12-28 | |||
| JP2011178610A | 2011-09-15 | |||
| JP2019084550A | 2019-06-06 | |||
| JP2019142437A | 2019-08-29 | |||
| JP2019211944A | 2019-12-12 |
Other References:
H. TORAYA, J. APPL. CRYSTALLOGR., vol. 19, 1986, pages 440 - 447
See also references of EP 3960721A4
See also references of EP 3960721A4
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