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US 2025/0066257 A1Published application
Ceramic ball material, method for manufacturing ceramic ball using same, and ceramic ball
AssigneesKabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
InventorsKai 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. In the ceramic ball material, the ceramic ball material has a ratio Rab/Rap of 0.70 or more and 1.03 or less, where Rab denotes an arithmetic average roughness on an outer peripheral surface of the band-shaped portion; and Rap denotes an arithmetic average roughness on an outer peripheral surface of the spherical portion.
Claims6
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 Rab/Rap of 0.70 or more and 1.03 or less, where Rab denotes an arithmetic average roughness on an outer peripheral surface of the band-shaped portion;
- and Rap denotes an arithmetic average roughness on an outer peripheral surface of the spherical portion.
1 more element
Dependencies are inferred from the claim text.