Layered film made of ultrafine particles and a hard composite material for tools possessing the film
AssigneeSumitomo Electric Industries, Ltd.
InventorsSatoru Kukino, Tetsuo Nakai, Mitsuhiro Goto, Takashi Yoshioka, Makoto Setoyama
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Abstract
Ultrafine particle-layered film for coating cutting tools. The film has more than two layers of at least two compounds consisting mainly of carbide, nitride, carbonitride or oxide of at least one element selected from a group consisting of IVa group elements, Va group elements, VIa group elements, Al, Si and B, and that each layer is made of ultrafine particles. Ultrafine particle-layered film improves hardness, strength, wear-resistance and heat-resistance of the tools.
Claims31
Ultrafine particle-layered film, wherein said film has more than two layers made of ultrafine particles of a different compound consisting mainly of a carbide, nitride, carbonitride, or oxide of at least one element selected from a group consisting of IVa group elements, Va group elements, VIa group elements, Al, Si, and B.
A method for making a coated tool, comprising applying on at least a portion of a surface of a substrate of said tool where cutting is to be effected said ultrafine particle-layered film.
Dependencies are inferred from the claim text.