Claims
- 1. A method of producing a sintered titanium-based carbonitride alloy with 3-25 weight percent binder phase, comprising steps of:
- milling a complex carbonitride raw material and said binder phase to form a mixed powder composite, said complex carbonitride raw material comprising (A.sub.x B.sub.1-x)(C.sub.y N.sub.1-y) where A is one or more elements from Group IV and B is one or more elements from Group V, with
- 0.86.ltoreq.x.ltoreq.0.99 and
- 0.74.ltoreq.y.ltoreq.0.83; and
- sintering the powder composite to produce said sintered titanium-based carbonitride alloy, all of the Group IV and V elements in the alloy being added via the complex raw material.
- 2. The method according to claim 1, wherein
- 0.88.ltoreq.x.ltoreq.0.98 and
- 0.76.ltoreq.y.ltoreq.0.81.
- 3. The method according to claim 1, wherein said complex carbonitride raw material is cubic.
- 4. The method according to claim 1, wherein A consists essentially of Ti.
- 5. The method according to claim 1, wherein B comprises at least two Group V metals.
- 6. The method according to claim 1, wherein the complex raw material comprises (Ti.sub.0.90 Ta.sub.0.03 V.sub.0.07)(C.sub.0.79 N.sub.0.21) or (Ti.sub.0.96 Ta.sub.0.04)(C.sub.0.78 N.sub.0.22).
- 7. The method according to claim 1, wherein the binder phase comprises Co, Ni, Fe or mixture thereof.
- 8. The method according to claim 1, wherein the complex raw material is milled with additions comprising at least one addition selected from carbides of Group VI metals and combinations thereof.
- 9. The method according to claim 1, wherein the sintering step is carded out by compaction and heating in an inert atmosphere.
- 10. The method according to claim 1, wherein the complex raw material comprises essentially equiaxial grains with a narrow grain size distribution and a mean grain size of 0.8-3.0 .mu.m.
- 11. The method according to claim 1, wherein the complex raw material comprises essentially equiaxial grains with a narrow grain size distribution and a mean grain size of 1-2 .mu.m.
- 12. The method according to claim 1, wherein the complex raw material includes Ti and Ta.
- 13. The method according to claim 1, wherein the complex raw material includes V, Nb, Zr, Hf or combinations thereof.
- 14. The method according to claim 1, wherein the complex raw material includes .ltoreq.0.8 weight % oxygen.
- 15. The method according to claim 1, wherein the complex raw material includes .ltoreq.0.5 weight % oxygen.
- 16. The method according to claim 1, wherein the raw material is produced directly by carbonitriding metals, metal oxides or mixtures thereof.
- 17. The method according to claim 1, wherein all of the N in the alloy is added via the complex raw material.
Priority Claims (2)
Number |
Date |
Country |
Kind |
9004116 |
Dec 1990 |
SEX |
|
PCT/SE91/00885 |
Dec 1991 |
WOX |
|
Parent Case Info
This application is a continuation of application Ser. No. 08/078,252, filed as PCT/SE91/00885, Dec. 19, 1991 published as WO92/11393, Jul. 9, 1992 abandoned.
US Referenced Citations (17)
Foreign Referenced Citations (2)
Number |
Date |
Country |
56-5946 |
Jan 1981 |
JPX |
8902306 |
Jun 1989 |
SEX |
Continuations (1)
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Number |
Date |
Country |
Parent |
78252 |
Jun 1993 |
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