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US 2025/0074831 A1Published application
Ceramic ball material, method for manufacturing ceramic ball using same, and ceramic ball
AssigneesKabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
InventorsShoya SANO, Kai FUNAKI, Hideki SATO
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Abstract
A ceramic ball material according to an embodiment includes a spherical portion; and a band-shaped portion formed over a circumference of a surface of the spherical portion. The ceramic ball material has a ratio R1/R2 of 0.3 or more and less than 1.0, where R1 denotes a surface roughness of an end portion of the band-shaped portion; and R2 denotes a surface roughness of a center portion of the band-shaped portion.
Claims12
A ceramic ball material comprising:
- a spherical portion;
- and
- a band-shaped portion formed over a circumference of a surface of the spherical portion, wherein
- the ceramic ball material has a ratio R1/R2 of 0.3 or more and less than 1.0, where R1 denotes a surface roughness of an end portion of the band-shaped portion;
- and R2 denotes a surface roughness of a center portion of the band-shaped portion.
2 more elements
Dependencies are inferred from the claim text.