Mechanically alloyed nickel-cobalt-chromium-iron composition of matter and glass fiber method and apparatus for using same
First Claim
1. A mechanically alloyed composition of matter consisting in weight percent essentially of about 30-40% chromium, about 5-25% cobalt, about 0.5-10% iron, about 0.2-0.6% aluminum, about 0.3-1.2% titanium, up to about 0.15% carbon, about 0.2-1% of yttria in a yttria-containing oxidic phase, up to about 0.7% oxygen inclusive of the oxygen in yttria, up to about 0.3% nitrogen with the proviso that the weight of said titanium is at least about 1.5 times the weight of nitrogen, up to about 0.4% zirconium, up to about 1% hafnium, up to about 1% silicon, up to about 2% manganese, up to about 0.05% boron, up to about 1% niobium, up to about 1% tantalum, up to about 1% molybdenum, up to about 1% tungsten, up to about 1% rhenium, up to about 1% total yttrium and the lanthanides provided that the total of hafnium, silicon, manganese, boron, niobium, tantalum, molybdenum, tungsten, rhenium, yttrium and the lanthanides does not exceed about 10%, the balance of the composition being essentially nickel.
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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° 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.
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Citations
43 Claims
- 1. A mechanically alloyed composition of matter consisting in weight percent essentially of about 30-40% chromium, about 5-25% cobalt, about 0.5-10% iron, about 0.2-0.6% aluminum, about 0.3-1.2% titanium, up to about 0.15% carbon, about 0.2-1% of yttria in a yttria-containing oxidic phase, up to about 0.7% oxygen inclusive of the oxygen in yttria, up to about 0.3% nitrogen with the proviso that the weight of said titanium is at least about 1.5 times the weight of nitrogen, up to about 0.4% zirconium, up to about 1% hafnium, up to about 1% silicon, up to about 2% manganese, up to about 0.05% boron, up to about 1% niobium, up to about 1% tantalum, up to about 1% molybdenum, up to about 1% tungsten, up to about 1% rhenium, up to about 1% total yttrium and the lanthanides provided that the total of hafnium, silicon, manganese, boron, niobium, tantalum, molybdenum, tungsten, rhenium, yttrium and the lanthanides does not exceed about 10%, the balance of the composition being essentially nickel.
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10. An alloy as in claim2 wherein carbon is less than 0.07%, the total oxygen plus nitrogen does not exceed about 0.5% and the iron content is less than 3%.
- 11. An alloy as in claim2 wherein the carbon is less than 0.07%, the total oxygen plus nitrogen does not exceed 0.6% and the iron is about 3% to 10%.
- 16. In the method of handling material from the group of molten glass and molten slag in the presence of atmospheric oxygen, the improvement comprising employing as a handling device a metallic structure composed, at least in the material contacting portion of said device, of a coarse-grained, mechanically alloyed alloy consisting in weight percent essentially of about 30-40% chromium, about 5-25% cobalt, about 0.5-10% iron, about 0.2-0.6% aluminum, about 0.3-1.2% titanium, up to about 0.15% carbon, about 0.2-1% of yttria in a yttria-containing oxidic phase, up to about 0.7% oxygen inclusive of the oxygen in yttria, up to about 0.3% nitrogen with the proviso that the weight of said titanium is at least about 1.5 times the weight of nitrogen, up to about 0.4% zirconium, up to about 1% hafnium, up to about 1% silicon, up to about 2% manganese, up to about 0.05% boron, up to about 1% niobium, up to about 1% tantalum, up to about 1% molybdenum, up to about 1% tungsten, up to about 1% rhenium, up to about 1% total yttrium and the lanthanides provided that the total of hafnium, silicon, manganese, boron, niobium, tantalum, molybdenum, tungsten, rhenium, yttrium and the lanthanides does not exceed about 10%, the balance of the composition being essentially nickel.
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18. A method as in claim16 wherein in said alloy hafnium is absent and zirconium does not exceed 0.07%.
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19. A method as in claim16 wherein said alloy contains about 0.4% to 0.6% hafnium.
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24. A method as in claim16 wherein in said alloy carbon is less than 0.07%, the total oxygen plus nitrogen does not exceed about 0.5% and the iron content is less than 3%.
- 26. A method as in claim25 wherein in said alloy the zirconium is less than 0.07% and hafnium is absent.
- 30. A foraminously walled glass spinner, at least the foraminous wall of which is made of a coarse-grained mechanically alloyed alloy of substantially 100% theoretical density which consists, in weight percent essentially of about 30-40% chromium, about 5-25% cobalt, about 0.5-10% iron, about 0.2-0.6% aluminum, about 0.3-1.2% titanium, up to about 0.15% carbon, about 0.2-1% of yttria in a yttria-containing oxidic phase, up to about 0.7% oxygen inclusive of the oxygen in yttria, up to about 0.3% nitrogen with the proviso that the weight of said titanium is at least about 1.5 times the weight of nitrogen, up to about 0.4% zirconium, up to about 1% hafnium, up to about 1% silicon, up to about 2% manganese, up to about 0.05% boron, up to about 1% niobium, up to about 1% tantalum, up to about 1% molybdenum, up to about 1% tungsten, up to about 1% rhenium, up to about 1% total yttrium and the lanthanides provided that the total of hafnium, silicon, manganese, boron, niobium, tantalum, molybdenum, tungsten, rhenium, yttrium and the lanthanides does not exceed about 10%, the balance of the composition being essentially nickel.
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34. A glass spinner as in claim30 wherein in said alloy titanium is present in an amount sufficient to tie up nitrogen in a stable grain boundary phase.
Specification