Sintered metal articles

Details Sintered metal articles Sintered metal articles

1973-11-12

1980-04-15

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75200, 75208R, 75171, 428567, B22F 300

Patent

active

041982347

ABSTRACT:
A process for the manufacture of sintered metal articles includes the steps of selecting a prealloy powder having a composition consisting essentially of 10-18% chromium, 2-6% iron, 2-6% silicon, 2-6% boron, 0.5-2% carbon, balance nickel, mixing the prealloy powder with copper powder in an amount equal to between 20% and 50% of the weight of the total of prealloy powder and copper, preferably adding a small percentage of a suitable lubricant, pressing the mixture to form a compact, and sintering the compact in the range 1050.degree.-1100.degree. C. for such a time that the copper and the nickel-rich prealloy only partly dissolve in one another.

REFERENCES:
patent: 2159231 (1939-05-01), Schlecht et al.
patent: 2845346 (1958-07-01), Scanlon et al.
patent: 2868667 (1959-01-01), Bowles
patent: 2875043 (1959-02-01), Tour
patent: 2936229 (1960-05-01), Shepard
patent: 3494747 (1970-02-01), Burr
patent: 3674472 (1972-07-01), Kimura et al.
patent: 3802852 (1974-04-01), Niimi et al.

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