Sumitomo Electric Hardmetal Corp.

Rintaro Sugimoto

Satoru Kukino

Takashi Harada

Naoki Watanobe

Taisuke Higashi

Yutaka Kobayashi

Nozomi Tsukihara

A diamond coated tool includes a base material and a diamond layer provided on the base material. The diamond layer has a boron content of 1×10ppma or more and 1×10ppma or less and an oxygen content of 1×10ppma or more and 1×10ppma or less in a first region surrounded by a surface of the diamond layer and a first imaginary plane located at a distance of 1 μm from the surface in a thickness direction.

Diamond coated tool

Cutting tool

A diamond-coated tool includes: a substrate; and a diamond layer that coats the substrate, wherein the diamond layer includes a first region that is in contact with the substrate, the first region includes a region Ssurrounded by an interface P between the substrate and the diamond layer and an imaginary plane Vseparated from the interface P by a distance of 2 &#x3bc;m, and the region Shas crystal grains grown in random directions.

Diamond-coated tool

Growing community of inventors

Itami, Japan

Rintaro Sugimoto