Title:
MATERIAL FOR CERAMIC BALL, METHOD FOR PRODUCING CERAMIC BALL USING SAME, AND CERAMIC BALL
Document Type and Number:
WIPO Patent Application WO/2023/190467
Kind Code:
A1
Abstract:
A material for a ceramic ball according to an embodiment of the present invention comprises a spherical part and a band-form part formed over the circumference of the surface of the spherical part. Rtb/Rts, which is the ratio of the maximum cross-sectional height Rtb of a roughness curve pertaining to the outer peripheral surface of the band-form part and the roughness maximum cross-sectional height Rts pertaining to the outer peripheral surface of the spherical part, is 1.0 or greater. Any diameter of the spherical part is preferably 0.5 mm or greater. Additionally, the material for the ceramic ball preferably contains any one of aluminum oxide, silicon nitride, silicon carbide, boron nitride, and zirconium oxide.
Inventors:
FUNAKI KAI (JP)
SATO HIDEKI (JP)
SATO HIDEKI (JP)
Application Number:
PCT/JP2023/012411
Publication Date:
October 05, 2023
Filing Date:
March 28, 2023
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA MATERIALS CO LTD (JP)
TOSHIBA MATERIALS CO LTD (JP)
International Classes:
C04B35/587; C04B35/111; C04B35/569
Foreign References:
| JP2011093789A | 2011-05-12 | |||
| JP2003137640A | 2003-05-14 | |||
| JP2013209283A | 2013-10-10 | |||
| JP2001163673A | 2001-06-19 | |||
| JP2001146479A | 2001-05-29 | |||
| JPH0648813A | 1994-02-22 | |||
| JP2764589B2 | 1998-06-11 | |||
| JPS6018620A | 1985-01-30 | |||
| JP4761613B2 | 2011-08-31 |
Attorney, Agent or Firm:
TOKYO INTERNATIONAL PATENT FIRM (JP)
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