Mechanically alloyed nickel-cobalt-chromium-iron composition of

Details Mechanically alloyed nickel-cobalt-chromium-iron composition of Mechanically alloyed nickel-cobalt-chromium-iron composition of

1989-02-08

1989-10-31

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 8, 65 15, 6537412, 75234, 75236, 148410, 148428, 420445, 420446, 420449, 420450, C22C 1905, C03B 37095, C21D 800

Patent

active

048774359

ABSTRACT:
A mechanically alloyed composition of matter or alloy containing 30-40% chromium, 5-25% cobalt, 0.5-10% iron, 0.2-0.6% aluminum, 0.3-1.2% titanium, up to 0.15% carbon, about 0.2-1% yttria, up to about 0.3% nitrogen, the % titanium being at least about 1.4 times the % nitrogen, minor amounts of optional elements, the balance being essentially nickel. The consolidated and hot worked alloy with coarse grains produced by heat treatment at about 1300.degree. C. is useful in service requiring hot strength along with extraordinary resistance to oxidation, sulfidation and hot corrosive media. Specific utilization of the alloy of the invention is contemplated in handling molten glass and in utensils adapted to be used in contact with molten glass, e.g. spinners.

REFERENCES:
patent: 3318694 (1967-05-01), Heitmann
patent: 3591362 (1971-07-01), Benjamin
patent: 3776704 (1973-12-01), Benjamin
patent: 3984240 (1976-10-01), Costin
patent: 4066448 (1978-01-01), Haeberle, Jr.
patent: 4274852 (1981-06-01), McGarry
patent: 4367083 (1983-01-01), Gaul
patent: 4386976 (1983-06-01), Benn et al.
patent: 4402767 (1983-09-01), Hinze et al.
patent: 4668312 (1987-05-01), Benn et al.

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