Multilayered coated cutting tool

Details Multilayered coated cutting tool Multilayered coated cutting tool

1998-04-15

2000-08-15

Turner, Archene

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

51295, 51307, 51309, 428212, 428469, 428697, 428698, 428699, B32B 702

Patent

active

06103357&

ABSTRACT:
The present invention relates to a cutting tool comprising a body of sintered cemented carbide or cermet, ceramic or high speed steel on which at least one of the functioning parts of the surface of the body, a thin, adherent, hard and wear resistant coating is applied. The coating comprises a laminar, multilayered structure of refractory compounds in polycrystalline, non-repetitive form, MX/NX/MX/NX where the alternating layers MX and NX are metal nitrides or carbides with the metal elements M and N selected from the group consisting of Ti, Nb, Hf, V, Ta, Mo, Zr, Cr, Al and W. The sequence of individual layer thicknesses is essentially aperiodic throughout the entire multilayered structure, and layer thicknesses are larger than 0.1 nanometer but smaller than 30 nanometer, preferably smaller than 20 nanometer. The total thickness of said multilayered coating is larger than 0.5 .mu.m but smaller than 20 .mu.m.

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patent: 5503912 (1996-04-01), Setoyama et al.
patent: 5783295 (1998-07-01), Barnett et al.

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