Hitachi Tool Engineering, Ltd.

Hitoshi Ohnuma

Kazuyuki Kubota

The hard-coated member of the present invention having a compression-stress-loaded hard coating having a thickness of 5 &#x3bc;m or more, the hard coating having a face-centered cubic structure having a composition represented by (MeX)(NCO), wherein Me is at least one element selected from Groups 4a, 5a and 6a, X is at least one element selected from the group consisting of Al, Si, B and S, a, x and y are respectively the contents (atomic ratios) of X, C and O, and &#x3b1; is a ratio of (MeX) to (NCO), meeting 0.1&#x2266;a&#x2266;0.65, 0&#x2266;x&#x2266;0.1, 0&#x2266;y&#x2266;0.1, and 0.85&#x2266;&#x3b1;&#x2266;1.25; and the X-ray diffraction of the hard coating having a peak intensity Iof a (111) plane, a peak intensity Iof a (200) plane, and a peak intensity Iof a (220) plane, meeting 2&#x2266;I/I, and 0.2&#x2266;I/I&#x2266;1, and the (200) plane having a half-value W(&#xb0;)&#x2266;0.7.

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Narita, Japan

Hitoshi Ohnuma