Ruthenium tantalum intermetallic compounds containing iron or co

Details Ruthenium tantalum intermetallic compounds containing iron or co Ruthenium tantalum intermetallic compounds containing iron or co

1990-02-09

1992-10-13

Roy, Upendra

Alloys or metallic compositions

Tantalum base

429462, 4232135, C22C 2900

Patent

active

051548836

ABSTRACT:
Intermetallic compounds of ruthenium and tantalum are disclosed comprising about 46 to 53 atomic percent tantalum and the balance substantially ruthenium. Another intermetallic compound is comprised of, about 45 to 54 atomic percent tantalum, up to about 35 atomic percent cobalt, and the balance substantially ruthenium, with ruthenium plus cobalt being less than 55 atomic percent. Another intermetallic compound is comprised of, about 45 to 54 atomic percent tantalum, up to about 25 atomic percent iron, and the balance substantially ruthenium. The intermetallic compounds have a high hardness up to about 950.degree. C. and have good room-temperature toughness.

REFERENCES:
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patent: 4299086 (1981-11-01), Madgavkar et al.
Tantalum and Niobium (ed) Miller Academic Press, N.Y. 1959, pp. 621, 627.
Binary Alloy Phase Diagrams, vol. 2, eds. Massalski et al, ASM, 1986, p. 1988.
"Development Potential of Advanced Intermetallic Materials" Interim Technical Report No. 12 Contract No. F33615-86-C-5055 R. L. Fleischer.
"Development Potential of Advanced Intermetallic Materials" Interim Technical Report No. 11 Contract No. F33615-86-C-5055, R. L. Fleischer.
"Development Potential of Advanced Intermetallic Compounds" Interim Technical Report No. 9 Contract No. F33615-86-C-5055, R. L. Fleischer.
"Development Potential of Advanced Intermetallic Materials" Interim Technical Report No. 8 Contract No. F33615-86-C-5055, R. L. Fleischer.

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