Highly hard material coated articles

Stock material or miscellaneous articles – Composite – Of metal

Patent

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Details

204192N, 427 38, 428217, 428472, 428698, 428702, 428911, B32B 1504, B05D 306, C23C 1500

Patent

active

044017197

ABSTRACT:
This invention relates to a highly hard material coated article which comprises a substrate of tool or part consisting of cermets, cemented carbides, tool steels or stainless steels and at least one highly hard material coated on the surface thereof, selected from the group consisting of carbides, nitrides and carbonitrides of at least one of titanium, zirconium and hafnium and those in which oxygen is dissolved, the coating being formed by an ion plating method wherein the accelerating voltage is high in a short time at the initial stage only, the crystals of the coated film being strongly orientated in the direction of <220> for the surface of the tool or part so that the diffraction intensity ratio of the peak from the {220} plane and the secondly strong diffraction peak in the X-ray diffraction using Cu-K.alpha. ray, that is, the diffraction intensity ratio is 15 or less of the latter to 100 of the former and the half value width of the diffraction peak from the {220} plane of the coating film being 0.8.degree. or more than 2 .theta. scale.

REFERENCES:
patent: 4169913 (1979-10-01), Kobayashi et al.

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