US1337276A - Electric-resistance alloy - Google Patents

Description

UNITED STATES PATENT ormon WILLIAM A. SGHEUCH, OF NEW YORK, N. Y., ASSIGNOR '10 WESTERN ELECTRIC COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK. 7

ELECTRIC-RESISTANCE ALLOY.

1,337 ,27 6. Specification of Letters Patent.

No Drawing.

To all whom it may concern:

Be it known thatI, WILLlIAM A. Solution, a citizen of the United States, residing at New York, in the county of Bronx and State of New York, have invented certain new and useful Improvements in Electric-Resistance Alloys, of which the following is a full, clear, concise, and exact description.

, This invention relates, to high resistance alloys, and its object is to provide an alloy having a highspecific resistance which possesses the properties essential to a high resistance element, such as durability and a melting I point higher than that of {pure copper.

It is known that an alloy consisting of nickel and cobalt only, has a resistance somewhat greater than that of copper and that the specific resistance is quite appreciable for compositions, ranging as much as from 60 to 95% of nickel and 40 to 5% of cobalt. The highest specific resistance for the two elements, namely, about eight times that of copper, is obtained with a composition of approximately 80 to 85% of nickel and 20 to 15% of cobalt.

However, in accordance with this invention,,it has been found that the specific resistance of a. base alloy of nickel and cobalt may be enormously increased by the addi tion of the metal titanium. Thus, an addition of 5% of titanium to the preferred base alloy of 80 to 85% of nickel and 20 to "15%. of cobalt increases the resistance to approximately forty times that of'copper; whilethe addition of 7.5% of titanium increases the resistance to approximately fifty-six times that of copper. The addltion of 20% of titanium,however, makes the alloy too brittle to be readily worked and drawn at the present stage ,of the lmowledge of working metals. It is, therefore, desirable that the titanium added should be less than 20%; and the preferred alloy is obtained by addwould'mean a mixture of approximately 75% nickel, 15% cobalt and 10% titanium.

Such an alloy, as cast, has the very high specific, resistance ofmore than '50 times that of copper and i s-malleable and very' durable so that it hasmany important uses Patented Apr. 20,1920.

Application filed August 3, 1917. Serial No. 184,229.

It has also been found that this alloy of nickel, cobalt and titanium may have its working qualities considerably improved and may be more readily melted by the ad- 'dition thereto of small amounts of the metals,

copper or manganese, or both. In general,

it will not be found necessary to add more than 10% of either of the metals, copper or manganese, or more than' a 20% mixture of the two. Thus, an alloy containing nickel, 14% cobalt, 8% titanium and 8% of either copper, manganese or a mixture of .both, has been ,found quite satisfactory as a high resistance element." It is to be understood, however, that this invention is not limited to an alloy containing copper and manganese, since these two metals may be omitted, if desired.

What is claimed is:

1. An alloy containing nickel, 1% r cent. cobalt or more and titanium, the mckel being in excess of 50%.

2. A resistance element containingnickel, 1% percent. cobalt or more and titanium in substantial amounts. A resistance element comprising nickel, 11} per cent. cobalt or more and titanium, the titanium content being less than 20%.

4. A resistance element comprising nickel, 1% per cent. cobalt or more and titanium, the titanium content being less than 12%.

5. A resistance element comprisingnickel, 1% per cent. cobalt or more and titanium,

v the nickel being in excess of 50%. ing approximately 10% titanium to a base alloy of 83% nickel and 17%:cobalt, which ture.

7. A resistance element ,comprismg 60 to 85% of nickel, 30 to 10% of cobalt, and

titanium in a substantial amount.

8. A resistance clement, approximately 11. A resistance element comprising nickel, 1% per cent. cobalt or more, titanium and copper. 7

12. A resistance element comprising nickel, 1:} percent. cobalt or more, titanium, and substantial amounts of manganese and copper.

resistance element comprising nickel, 1%

per cent. cobalt or more, titanium and manganese, the manganese content being less than 20%.

14. A resistance element comprising nickel, 14; per cent. cobalt or more, titanium,

- and one or more metals having the properties of copper and manganese, said one or more metals being present in an amount less than 20% 15. A resistance element comprising ap nickel, 10 to 30% proximately 60 to 85% cobalt, and titanium and one or more metals having the properties of manganese and copper.

16. A resistance element comprising approximately -70 nickel, 14% cobalt, 8%

comprising titanium, and. 8% of one or more metals having the properties of copper and manganese.

17. A resistance element comprising ,ap-' proximately 70% nickel, 14% cobalt, 8% titanium, and 8% of manganese and copper.

18. An alloy comprising nickel, 1% per cent. cobalt or moreand titanium, said alloy being characterized by having a specific-resistance greater than an alloy of the first two named ingredients.

'19. An alloy comprising nickel, 1% per cent; cobalt or more, titanium and manganese, the content of nickel being not less than 50% by weight of the whole, said alloy being characterized by having a specific resistance greater than an alloy of the first two named ingredients.

20. An alloy comprising nickel, 1.} cent. cobalt or more, titanium and copper, the content of nickel being not less than 50% by. Weight of the whole, said alloy being characterized by having a specific resistance greater than an alloy of the first per two named ingredients.

21. An. alloy containing 60 'to 85% nickel, 10 to 3( cobalt, and titanium and one or more metals having the properties of manganese and copper.

In witness whereof I hereunto subscribe my7name this '2nd'day of August, A. D. 191

WILLIAM A. SCHEUCH.

approximately a