Fujimi Incorporated

Kyosuke Tenko

Hitoshi Morinaga

Kazusei Tamai

Maiko Asai

Yuuichi Ito

Toru Kamada

Provided are an abrasive, a polishing composition, and a polishing method capable of polishing the surface of an alloy or metal oxide at a sufficient polishing removal rate and providing a high-quality mirror surface. The abrasive contains alumina having an &#x3b1;-conversion rate of 80% or more and having a 50% particle diameter, in a volume-based cumulative particle diameter distribution, of 0.15 &#x3bc;m or more to 0.35 &#x3bc;m or less. The polishing composition contains this abrasive and has a pH of 7 or less. These abrasive and polishing composition are used for polishing polishing objects containing at least one of an alloy and a metal oxide.

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Aichi, Japan

Kyosuke Tenko