Coated highly wear-resistant tool and physical coating process therefor
US5208102A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1992 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Jan 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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 obtai…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.