Ni3(Si, Ti)-based intermetallic compound to which Ta is added

Patent metadata

Field	Value
Publication number	US-9447485-B2
Application number	US-201013395778-A
Country	US
Kind code	B2
Filing date	Sep 14, 2010
Priority date	Sep 14, 2009
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

The present invention provides a structural material having excellent hardness (strength) characteristics.
The present invention provides an Ni 3 (Si, Ti)-based intermetallic compound characterized by containing from 25 to 500 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of from 10.0 to 12.0% by atom of Si, 1.5% by atom or more but less than 7.5% by atom of Ti, more than 2.0% by atom but 8.0% by atom or less of Ta and a balance made up of Ni excepting impurities, and by having a microstructure composed of an L1 2 phase or a microstructure composed of an L1 2 phase and a second phase dispersion containing Ni and Ta.

First claim

The invention claimed is:

1. An Ni 3 (Si, Ti)-based intermetallic compound characterized by consisting of from 10.0 to 12.0% by atom of Si, 1.5% by atom or more but less than 6.5% by atom of Ti, more than 2.0% by atom but 8.0% by atom or less of Ta, a balance made up of Ni excepting impurities, and from 25 to 500 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of the respective amounts of Si, Ti, Ta and Ni, and by having a microstructure composed of an L1 2 phase or a microstructure composed of an L1 2 phase and a second phase dispersion containing Ni and Ta.

2. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 1 , having a Vickers' hardness of from 410 to 520 in a range of temperature from room temperature to 800° C.

3. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 1 , consisting of from 10.0 to 12.0% by atom of Si, from 1.5 to 5.5% by atom of Ti, from 4.0 to 8.0% by atom of Ta, a balance made up of Ni excepting impurities, and from 25 to 100 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of the respective amounts of Si, Ti, Ta and Ni.

4. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 1 , consisting of from 10.0 to 12.0% by atom of Si, 2.5 to 5.5% by atom of Ti, 4.0 to 7.0% by atom of Ta, a balance made up of Ni excepting impurities, and from 25 to 100 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of the respective amounts of Si, Ti, Ta and Ni.

5. An Ni 3 (Si, Ti)-based intermetallic compound characterized by consisting of from 10.0 to 12.0% by atom of Si, 2.5 to 6.5% by atom of Ti, 3.0 to 7.0% by atom of Ta, a balance made up of Ni excepting impurities, and from 25 to 100 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of the respective amounts of Si, Ti, Ta and Ni, and by having a microstructure composed of an L1 2 phase or a microstructure composed of an L1 2 phase and a second phase dispersion containing Ni and Ta.

6. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 5 , consisting of from 10.0 to 12.0% by atom of Si, from 9.0 to 11.5% by atom in total of Ti and Ta, a balance made up of Ni excepting impurities, and from 25 to 100 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of the respective amounts of Si, Ti, Ta and Ni.

7. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 5 , having a Vickers' hardness of from 410 to 520 measured under a load of 300 g.

8. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 1 , wherein a maximum content of Ta of the Ni 3 (Si, Ti)-based intermetallic compound is 6.0% by atom.

9. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 1 , consisting of from 19.0 to 21.5% by atom in total of Si, Ti and Ta, a balance made up of Ni excepting impurities, and from 25 to 500 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of the respective amounts of Si, Ti, Ta and Ni.

10. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 2 , consisting of from 10.0 to 12.0% by atom of Si, from 1.5 to 5.5% by atom of Ti, from 4.0 to 8.0% by atom of Ta, a balance made up of Ni excepting impurities, and from 25 to 100 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of the respective amounts of Si, Ti, Ta and Ni.

11. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 2 , consisting of from 10.0 to 12.0% by atom of Si, 2.5 to 5.5% by atom of Ti, 4.0 to 7.0% by atom of Ta, a balance made up of Ni excepting impurities, and from 25 to 100 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of the respective amounts of Si, Ti, Ta and Ni.

12. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 3 , consisting of 10.0 to 12.0% by atom of Si, 2.5 to 5.5% by atom of Ti, 4.0 to 7.0% by atom of Ta, a balance made up of Ni excepting impurities, and from 25 to 100 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of the respective amounts of Si, Ti, Ta and Ni.

13. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 6 , having a Vickers' hardness of from 410 to 520 measured under a load of 300 g.

14. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 2 , wherein a maximum content of Ta of the Ni 3 (Si, Ti)-based intermetallic compound is 6.0% by atom.

15. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 3 , wherein a maximum content of Ta of the Ni 3 (Si, Ti)-based intermetallic compound is 6.0% by atom.

16. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 4 , wherein a maximum content of Ta of the Ni 3 (Si, Ti)-based intermetallic compound is 6.0% by atom.

17. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 5 , wherein a maximum content of Ta of the Ni 3 (Si, Ti)-based intermetallic compound is 6.0% by atom.

18. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 6 , wherein a maximum content of Ta of the Ni 3 (Si, Ti)-based intermetallic compound is 6.0% by atom.

19. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 7 , wherein a maximum content of Ta of the Ni 3 (Si, Ti)-based intermetallic compound is 6.0% by atom.

20. The Ni 3 (Si, Ti)-based intermetallic compound according to claim 2 , consisting of from 19.0 to 21.5% by atom in total of Si, Ti and Ta, a balance made up of Ni excepting impurities, and from 25 to 500 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of the respective amounts of Si, Ti, Ta and Ni.

Assignees

• Kaneno Yasuyuki
• Takasugi Takayuki
• Univ Osaka Prefect Public Corp

Inventors

• Kaneno Yasuyuki
• Takasugi Takayuki

Classifications

• C22C19/03 Primary

  based on nickel · CPC title

• C22C1/00

  Making non-ferrous alloys (by electrothermic methods C22B4/00; by electrolysis C25C1/24, C25C3/36) · CPC title

• C22F1/08

  of copper or alloys based thereon · CPC title

• H01M4/661

  Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title

• C22F1/10

  of nickel or cobalt or alloys based thereon · CPC title