Title:
CERAMIC SPHERES
Document Type and Number:
WIPO Patent Application WO/2022/044983
Kind Code:
A1
Abstract:
Ceramic spheres that include zirconia as a primary component and are 80–95 volume% tetragonal crystals and no more than 5 volume% monoclinic crystals, the ceramic spheres being characterized in that, when average particle diameter is X (μm), the maximum height of waviness Wz (μm) of the line of intersection between a cross-section and the surface of spheres that have a diameter of X/2 (μm) is 0.5%–1.2% of the average particle diameter X (μm). The present invention provides ceramic spheres that can be used as a medium, such as balls or beads, that is for use in a grinder and do not readily break, even when grinding and dispersion are performed at normal temperature and a high water temperature.
Inventors:
KAMII YASUHIRO (JP)
SHINKAI MASAYUKI (JP)
YOSHINO MASAKI (JP)
SHINKAI MASAYUKI (JP)
YOSHINO MASAKI (JP)
Application Number:
PCT/JP2021/030514
Publication Date:
March 03, 2022
Filing Date:
August 20, 2021
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C01G25/02; B02C17/20; C04B35/486
Domestic Patent References:
| WO2010067782A1 | 2010-06-17 |
Foreign References:
| JP2020075236A | 2020-05-21 | |||
| JP2017056429A | 2017-03-23 | |||
| JP2006193345A | 2006-07-27 |
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