Claims
- 1. In a cutting tool, comprising a base body having an edge on which is disposed a base coating composed of at least one of titanium carbide, titanium carbonitride and titanium nitride, the improvement comprising an outer cover layer of zirconium on said coating, the thickness of said out cover layer amounting to from 1 to 10% of the thickness of said base coating.
- 2. A cutting tool as defined in claim 1 wherein said base body is composed of a hard metal that substantially contains tungsten carbide and an auxiliary metal of the iron group.
- 3. A cutting tool as defined in claim 2 wherein the outer zirconium nitride layer is applied by the chemical vapor deposition method.
- 4. A cutting tool as defined in claim 2 wherein the outer zirconium nitride layer is applied by the physical vapor deposition method.
- 5. A cutting tool as defined in claim 1 wherein the outer zirconium nitride layer is applied by the chemical vapor deposition method.
- 6. A cutting tool as defined in claim 1 wherein the outer zirconium nitride layer is applied by the physical vapor deposition method.
- 7. A cutting tool as defined in claim 1 wherein said base body is composed of a hard metal that substantially contains tungsten carbide and an auxiliary metal of the iron group.
- 8. A cutting tool as defined in claim 1 wherein the outer zirconium nitride layer is applied by the chemical vapor deposition method.
- 9. A cutting tool as defined in claim 1 wherein the outer zirconium nitride layer is applied by the physical vapor deposition method.
- 10. A cutting tool as defined in claim 1 wherein said base body is composed of a hard metal that substantially contains tungsten carbide and an auxiliary metal of the iron group.
- 11. A cutting tool as defined in claim 1 wherein the outer zirconium nitride layer is applied by the chemical vapor deposition method.
- 12. A cutting tool as defined in claim 1 wherein the outer zirconium nitride layer is applied by the physical vapor deposition method.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3620901 |
Jun 1986 |
DEX |
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CROSS-REFERENCE TO RELATED APPLICATION
This application is a co-pending continuation-in-part of application Ser. No. 07/064,428, filed June 22, 1987, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4406667 |
Sarin et al. |
Sep 1983 |
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4406668 |
Sarin et al. |
Sep 1983 |
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4406670 |
Sarin et al. |
Sep 1983 |
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Non-Patent Literature Citations (3)
Entry |
"Multiple Coated Super Hard Alloy and its Production," Chemical Abstracts, JP-53-1112, vol. 2, No. 46, of Mar. 28th, 1978. |
"Double-Coated Super Hard Alloy Part and Production Thereof," Chemical Abstracts, JP-53-3906, vol. 2, No. 46, of Mar. 28th, 1978. |
"Zeitschrift Metall", vol. 26, pp. 182-132, (1972) Professor R. Kieffer. |
Continuation in Parts (1)
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Number |
Date |
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Parent |
64428 |
Jun 1987 |
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