Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1982-08-24
1983-09-06
Hoffman, James R.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427 39, B05D 100, B32B 1504, C23C 1500
Patent
active
044029942
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 on 2.theta. scale.
REFERENCES:
patent: 4169913 (1979-10-01), Kobayashi et al.
Doi Yoshihiko
Kobayashi Mitsunori
Hoffman James R.
Sumitomo Electric Industries Ltd.
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