Coated highly wear-resistant tool and physical coating process t

Details Coated highly wear-resistant tool and physical coating process t Coated highly wear-resistant tool and physical coating process t

1992-01-17

1993-05-04

Epstein, Henry F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428697, 428698, 428702, 428704, 51307, 51309, B32B 702

Patent

active

052081028

ABSTRACT:
Coated highly wear-resistant tools have an Me.sup.1.sub.1-x (.alpha..sub.2 Me.sup.2 * .alpha..sub.3 Me.sup.3 * . . . .alpha..sub.n Me.sup.n).sub.x N.sub.u C.sub.v O.sub.w coating, wherein Me.sup.1 is a metal of the chemical group IVb of the periodic system, and Me.sup.2, Me.sup.3, . . . , Me.sup.n are other metals. The values u+v+w=1 and the Me concentration changes at least once continuously over the layer thickness to .alpha..sub.2 Me.sup.2 * .alpha..sub.3 Me.sup.3, . . . .alpha..sub.n Me.sup.n. The value for x is preferably between 0.1 and 0.7, the values for v and/or w can be approximately zero or w<0.3, and the further metal Me.sup.2, Me.sup.3, . . . , Me.sup.n is another metal of the chemical group IVb of the periodic system and/or vanadium and/or preferably aluminum. In working tasks with the tools according to the invention as compared to known tools, a significantly increased service life is obtained. In the production of the coating, a physical coating process is used, in which the ratio of at least two streams of vapor onto the basic body of the tools is varied in such a way that on the basic bodies, a coating with continuously alternating material concentration is obtained.

REFERENCES:
patent: 4714660 (1987-12-01), Gates Jr.
patent: 4753854 (1988-06-01), Gavrilov et al.
patent: 4842710 (1989-06-01), Freller et al.
Quinto et al., "High Temperature Microhardness of Hard Coatings Produced by Physical and Chemical Vapor Deposition", Thin Solid Films, 153 (1987) pp. 19-36.
Beensh Marchwicka et al., "Structure of Thin Films Prepared by Cosputtering of Titanium and Aluminum or Titanium and Silicon", Thin Solid Films, 82 (1981) pp. 313-320.

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