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US 12,624,728 B2Granted
Ceramic ball material, method for manufacturing ceramic ball using same, and ceramic ball
AssigneeNiterra Materials Co., Ltd.
InventorsKai Funaki, Hideki Sato
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Abstract
A ceramic ball material according to an embodiment including: 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 Rtb/Rts of 1.0 or more, where Rtb denotes a maximum cross-sectional height of a roughness profile on an outer peripheral surface of the band-shaped portion; and Rts denotes a maximum cross-sectional height of roughness on an outer peripheral surface of the spherical portion.
Claims7
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 Rtb/Rts of 1.0 or more, where Rtb denotes a maximum cross-sectional height of a roughness profile on an outer peripheral surface of the band-shaped portion;
- and Rts denotes a maximum cross-sectional height of roughness on an outer peripheral surface of the spherical portion.
2 more elements
Dependencies are inferred from the claim text.