Title:
CERAMIC SPHERICAL BODY AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/106178
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a ceramic spherical body having high hydrophilicity and reduced wear during pulverization. The present invention is a ceramic spherical body which contains zirconia as a main component, and has a monoclinic crystal percentage of at most 3.0 vol%, a tetragonal crystal percentage of 80 vol% to 95 vol%, a surface roughness Sa of 0.005 μm to 0.015 μm, and a ratio (A/B) of 0.07 to 0.30, where (A) is the peak maximum value at 3,200-3,400 cm-1 derived from OH groups on the surface of the ceramic spherical body, and (B) is the sum of peak maximum values at 450-500 cm−1, 550-600 cm-1, and 750-850 cm−1 derived from Zr-O bonds.
Inventors:
KAMII YASUHIRO (JP)
NAKAJIMA HOTAKA (JP)
SAWAGOSHI TATSUYA (JP)
NAKAJIMA HOTAKA (JP)
SAWAGOSHI TATSUYA (JP)
Application Number:
PCT/JP2022/044138
Publication Date:
June 15, 2023
Filing Date:
November 30, 2022
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C01G25/02; B02C17/20; C04B35/486; C04B41/80
Domestic Patent References:
| WO2010067782A1 | 2010-06-17 |
Foreign References:
| JP2021155328A | 2021-10-07 | |||
| JP2006298711A | 2006-11-02 | |||
| JPS6051617A | 1985-03-23 | |||
| JP2018177550A | 2018-11-15 | |||
| JP2020075236A | 2020-05-21 | |||
| JP2017056429A | 2017-03-23 | |||
| JP2018090433A | 2018-06-14 |
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