Title:
ZIRCONIA PRE-SINTERED BODY
Document Type and Number:
WIPO Patent Application WO/2022/138881
Kind Code:
A1
Abstract:
The present invention provides a pre-sintered body for obtaining a zirconia sintered body exhibiting both high strength and high translucency, and also provides a manufacturing method therefor. The present invention pertains to a zirconia pre-sintered body that contains secondary aggregates having an average particle size of at most 275 nm, wherein the secondary aggregates contain zirconia and a stabilizer capable of inhibiting the phase transition of zirconia, and are formed from large particles having an average primary particle size from 100-200 nm, inclusive, and small particles having an average primary particle size of at least 10 nm and less than 60 nm.
Inventors:
NAKANO KIRIHIRO (JP)
KASHIKI NOBUSUKE (JP)
KUDO YASUTAKA (JP)
ITO YOSHIHISA (JP)
KASHIKI NOBUSUKE (JP)
KUDO YASUTAKA (JP)
ITO YOSHIHISA (JP)
Application Number:
PCT/JP2021/048065
Publication Date:
June 30, 2022
Filing Date:
December 23, 2021
Export Citation:
Assignee:
KURARAY NORITAKE DENTAL INC (JP)
International Classes:
C01G25/02; A61C13/083; C04B35/486
Domestic Patent References:
| WO2018056330A1 | 2018-03-29 | |||
| WO2020179877A1 | 2020-09-10 |
Foreign References:
| JP2017128471A | 2017-07-27 | |||
| CN102701279A | 2012-10-03 | |||
| US20040168610A1 | 2004-09-02 | |||
| JP2019189524A | 2019-10-31 | |||
| US20200261322A1 | 2020-08-20 | |||
| JP2019189524A | 2019-10-31 | |||
| US20040168610A1 | 2004-09-02 |
Other References:
MOSKOVITS, M. RAVI, B.G. CHAIM, R.: "Sintering of bimodal Y"2o"3-stabilized zirconia powder mixtures with a nanocrystalline component", NANOSTRUCTURED MATERIALS., ELSEVIER, NEW YORK, NY., US, vol. 11, no. 2, 1 March 1999 (1999-03-01), US , pages 179 - 185, XP004175486, ISSN: 0965-9773, DOI: 10.1016/S0965-9773(99)00030-6
Attorney, Agent or Firm:
KAMADA Koichi et al. (JP)
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