Hard layer-coated tool
AssigneeHitachi Tool Engineering, Ltd.
InventorsKazuyuki Kubota, Nobuhiko Shima
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Abstract
A tool coated with a hard Ti/B layer having fine boron nitride particles dispersed therein, wherein the bonding energy of B and N is observed in an ESCA analysis of the hard coating layer; wherein peaks of c-BN and h-BN is detected in an Raman spectroscopy of the hard coating layer; wherein a ratio Q1/Q2 of a peak intensity Q1 of c-BN to a peak intensity Q2 of h-BN is 1.0 or more; wherein a half-value width Z of a (200) face in an X-ray diffraction of the hard coating layer is in a range of 0.3° to 0.6°; and wherein a ratio K/L of a face thickness K to a flank thickness L in the tool is 1.0 or more, whereby the hard coating layer has high hardness, high lubricating properties and excellent crater wear resistance, with chemical reactions with a work suppressed.
Claims7
A tool coated with a hard layer made of any of a nitride, a carbonitride, an oxinitride and an oxicarbonitride each contains Ti and B as metal elements;
- wherein said hard coating layer contains a boron nitride phase;
- wherein the bonding energy of B and N is observed in an ESCA analysis of said hard coating layer;
- and wherein the existence of c-BN and/or h-BN is observed in a Raman spectroscopy of said hard coating layer.
Dependencies are inferred from the claim text.