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DE1092212B - Use of a noble metal alloy as a material for resistors, especially for potentiometer wires - Google Patents

Use of a noble metal alloy as a material for resistors, especially for potentiometer wires

Info

Publication number
DE1092212B
DE1092212B DED25455A DED0025455A DE1092212B DE 1092212 B DE1092212 B DE 1092212B DE D25455 A DED25455 A DE D25455A DE D0025455 A DED0025455 A DE D0025455A DE 1092212 B DE1092212 B DE 1092212B
Authority
DE
Germany
Prior art keywords
palladium
resistors
alloys
alloy
metal alloy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DED25455A
Other languages
German (de)
Inventor
Dr Paul Walter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Degussa GmbH filed Critical Degussa GmbH
Priority to DED25455A priority Critical patent/DE1092212B/en
Publication of DE1092212B publication Critical patent/DE1092212B/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C5/00Alloys based on noble metals
    • C22C5/04Alloys based on a platinum group metal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Details Of Resistors (AREA)
  • Contacts (AREA)

Description

Verwendung einer Edelmetallegierung als Werkstoff für Widerstände, insbesondere für Potentiometerdrähte In neuerer Zeit ist man bestrebt, hochohmige Widerstände für Potentiometer und ähnliche elektrische Geräte in ihrer Größe und ihrem Gewicht zu reduzieren. Diese Bestrebungen wurden insbesondere durch die im Flugzeugbau gestellten Forderungen eingeleitet, da hier eine Gewichtsersparnis bei der Vielzahl der verwendeten elektrischen Instrumente von großer Bedeutung sein kann. An die Werkstoffe zur Herstellung solcher Widerstände, insbesondere von Potentiometern, werden damit die verschiedensten, nur schwer zu vereinbarenden Forderungen gestellt. Sie sollen einerseits einen hohen elektrischen Widerstand, andererseits einen sehr geringen Temperaturkoeffizienten besitzen. Sie sollen abriebfest sein, aber sich gut verformen lassen. Sie müssen auch noch nach langer Betriebsdauer konstante Widerstände besitzen, wobei gleichzeitig an die Korrosionsfestigkeit außerordentlich hohe Ansprüche gestellt werden. Zu allen diesen Eigenschaften kommt noch die Forderung nach einem konstanten niedrigen Übergangswiderstand.Use of a precious metal alloy as a material for resistors, especially for potentiometer wires. In recent times, efforts have been made to use high-resistance Resistors for potentiometers and similar electrical devices in their size and to reduce their weight. These efforts were particularly supported by the im Aircraft construction initiated demands, as here a weight saving the multitude of electrical instruments used can. The materials used to manufacture such resistors, especially potentiometers, This means that the most varied of demands that are difficult to reconcile are made. On the one hand they should have a high electrical resistance, on the other hand a very high one have low temperature coefficients. They are supposed to be abrasion resistant, but they are let it deform well. They still need constant resistances even after a long period of operation have, at the same time extremely high demands on the corrosion resistance be asked. In addition to all of these properties, there is also the requirement for one constant low contact resistance.

Alle diese Forderungen glaubte man bisher, zumindest zum Teil, vor allem durch die Verwendung von Platin- und Goldlegierungen als Werkstoff für elektrische Widerstände erfüllen zu können. Leider haben solche Legierungen ein hohes Gewicht; man ist also gezwungen, auf andere Legierungspartner auszuweichen. Es ist bereits bekannt, Palladium mit Wolfram oder Molybdän zu legieren. Solche Legierungen sind jedoch nur bei relativ geringen Wolfram-oder Molybdängehalten gut verformbar, während zum Erreichen hoher Widerstandswerte auch höhere Legierungsgehalte notwendig sind.All of these demands were previously believed, at least in part mainly through the use of platinum and gold alloys as material for electrical To be able to meet resistances. Unfortunately, such alloys are very heavy; you are therefore forced to switch to other alloy partners. It is already known to alloy palladium with tungsten or molybdenum. Such alloys are however, it is only readily deformable with a relatively low tungsten or molybdenum content, while To achieve high resistance values, higher alloy contents are also necessary.

Ferner sind Legierungen aus je 0,5 bis 15% Ruthenium und Kupfer, Rest Palladium, Legierungen aus 10 bis 6011/o Platin, 12 bis 899/o Palladium, 1 bis 15% Ruthenium und/oder Rhodium, Legierungen aus 10 bis 80% Platin, 12 bis 90'0!o Palladium, 1 bis 150/0 Ruthenium, Legierungen aus 80 bis 90% Palladium, 5 bis 10% Rhodium, 5 bis 109/o Iridium, Legierungen aus 60 bis 95% Palladium, 0,5 bis 2011/a Ruthenium, 2,5 bis 39,5 9/o Iridium bekannt.There are also alloys of 0.5 to 15% ruthenium and copper, the rest Palladium, alloys of 10 to 6011 / o platinum, 12 to 899 / o palladium, 1 to 15% Ruthenium and / or rhodium, alloys from 10 to 80% platinum, 12 to 90'0! O palladium, 1 to 150/0 ruthenium, alloys of 80 to 90% palladium, 5 to 10% rhodium, 5 to 109 / o iridium, alloys from 60 to 95% palladium, 0.5 to 2011 / a ruthenium, 2.5 to 39.5 9 / o iridium is known.

Es wurde nun gefunden, daß Legierungen des Palladiums mit Titan, Zirkonium, Hafnium, Thorium, Vanadin, Niob oder Tantal, einzeln oder zu mehreren, vorzügliche elektrische, mechanische und chemische Eigenschaften besitzen, die sie insbesondere für Potentiometerwiderstände hoher Güte ausgezeichnet geeignet machen. Nach der Erfindung wird als Werkstoff für elektrische Widerstände, insbesondere für Potentiometer, eine Legierung aus 1 bis 50, vorzugsweise 3 bis 4011/o der genannten Elemente, Rest Palladium, benutzt. Als besonders interessant haben sich Legierungen des Vanadins mit Palladium, gegebenenfalls mit Gehalten von Gold oder Silber, erwiesen, die sich relativ leicht bearbeiten lassen.It has now been found that alloys of palladium with titanium, zirconium, Hafnium, thorium, vanadium, niobium or tantalum, individually or in groups, excellent have electrical, mechanical and chemical properties that make them in particular make them ideally suited for high-quality potentiometer resistors. After Invention is used as a material for electrical resistors, especially for potentiometers, an alloy of 1 to 50, preferably 3 to 4011 / o of the elements mentioned, remainder Palladium, used. Vanadium alloys have proven to be of particular interest with palladium, possibly with contents of gold or silver, proved that can be processed relatively easily.

In manchen Fällen ist es auch erwünscht, bis zu 3011/o, vorzugsweise bis zu 1511/o, der in der Legierung vorhandenen Palladiummenge durch Silber und/oder Gold zu ersetzen.In some cases it is also desirable, up to 3011 / o, preferably up to 1511 / o, the amount of palladium present in the alloy by silver and / or To replace gold.

Gegenüber den bekannten Legierungen zeichnen sich Legierungen gemäß der Erfindung durch ein niedrigeres spezifisches Gewicht, durch eine kleine Thermospannung gegenüber Kupfer, durch einen kleinen Temperaturkoeffizienten, durch hohe Zerreißfestigkeit und durch einen hohen spezifischen Widerstand aus, der in der Regel über 1,0 Ohm mm2/m liegt.Compared to the known alloys, alloys are distinguished according to of the invention by a lower specific weight, by a small thermal voltage compared to copper, due to a small temperature coefficient, due to its high tensile strength and characterized by a high specific resistance, which is usually above 1.0 ohm mm2 / m.

Geeignete Legierungen haben beispielsweise die Zusammensetzung 5,05 % Vanadin, Rest Palladium . . . . . . . . . . . . 0,57 Ohm mm2/m 4,75 %, Titan, Rest Palladium . . . . . . . . . . . . 0,35 Ohm mm2/m 6,84% Vanadin, 26,489/o Gold, Rest Palladium . . . . . . . . . . . . 1,10 Ohm mm2/m 10,669/o Vanadin, Rest Palladium . . . . . . . . . . . . 1,37 Ohm mm2/m Suitable alloys have, for example, the composition 5.05% vanadium, Remainder palladium. . . . . . . . . . . . 0.57 Ohm mm2 / m 4.75%, titanium, Remainder palladium. . . . . . . . . . . . 0.35 Ohm mm2 / m 6.84% vanadium, 26.489 / o gold, Remainder palladium. . . . . . . . . . . . 1.10 Ohm mm2 / m 10,669 / o vanadium, Remainder palladium. . . . . . . . . . . . 1.37 Ohm mm2 / m

Claims (2)

PATENTANSPRÜCHE: 1. Verwendung einer Palladiumlegierung aus Titan, Zirkonium, Hafnium, Thorium, Vanadin, Niob oder Tantal, einzeln oder zu mehreren, in Mengen von 1 bis 50'%, vorzugsweise 3 bis 4011/o, Rest Palladium, als Werkstoff für Widerstände, insbesondere für Potentiometerdrähte. PATENT CLAIMS: 1. Use of a palladium alloy made of titanium, Zirconium, hafnium, thorium, vanadium, niobium or tantalum, individually or in groups, in amounts of 1 to 50%, preferably 3 to 4011 / o, Remainder palladium, as a material for resistors, especially for potentiometer wires. 2. Verwendung einer Legierung der in Anspruch 1 genannten Zusammensetzung, bei der jedoch ein Teil des Palladiums, und zwar bis zu 30%, vorzugsweise bis zu 15°/e, der in der Legierung vorhandenen Palladiummenge durch Gold und/oder Silber ersetzt ist, für den in Anspruch 1 angegebenen Zweck. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 692 208, 753 250; USA.-Patentschriften Nr. 2 279 763, 2 303 402, 2303404.2. Use an alloy of the composition mentioned in claim 1, but in which a Part of the palladium, specifically up to 30%, preferably up to 15%, of the Alloy existing amount of palladium is replaced by gold and / or silver, for the purpose specified in claim 1. Publications considered: German Patent Nos. 692 208, 753 250; U.S. Patent Nos. 2,279,763, 2,303 402, 2303404.
DED25455A 1957-04-20 1957-04-20 Use of a noble metal alloy as a material for resistors, especially for potentiometer wires Pending DE1092212B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED25455A DE1092212B (en) 1957-04-20 1957-04-20 Use of a noble metal alloy as a material for resistors, especially for potentiometer wires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED25455A DE1092212B (en) 1957-04-20 1957-04-20 Use of a noble metal alloy as a material for resistors, especially for potentiometer wires

Publications (1)

Publication Number Publication Date
DE1092212B true DE1092212B (en) 1960-11-03

Family

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DED25455A Pending DE1092212B (en) 1957-04-20 1957-04-20 Use of a noble metal alloy as a material for resistors, especially for potentiometer wires

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139891A (en) * 1991-07-01 1992-08-18 Olin Corporation Palladium alloys having utility in electrical applications
US5236789A (en) * 1991-07-01 1993-08-17 Olin Corporation Palladium alloys having utility in electrical applications

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE692208C (en) * 1938-01-29 1940-06-14 Baker & Company Inc Palladium alloy
US2279763A (en) * 1941-07-09 1942-04-14 Baker & Co Inc Alloy
US2303404A (en) * 1941-12-20 1942-12-01 Baker & Co Inc Alloy
US2303402A (en) * 1941-07-09 1942-12-01 Baker & Co Inc Alloy
DE753250C (en) * 1939-08-05 1952-08-04 Baker & Company Use of alloys made of platinum metals for resistance wires

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE692208C (en) * 1938-01-29 1940-06-14 Baker & Company Inc Palladium alloy
DE753250C (en) * 1939-08-05 1952-08-04 Baker & Company Use of alloys made of platinum metals for resistance wires
US2279763A (en) * 1941-07-09 1942-04-14 Baker & Co Inc Alloy
US2303402A (en) * 1941-07-09 1942-12-01 Baker & Co Inc Alloy
US2303404A (en) * 1941-12-20 1942-12-01 Baker & Co Inc Alloy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139891A (en) * 1991-07-01 1992-08-18 Olin Corporation Palladium alloys having utility in electrical applications
WO1993001050A1 (en) * 1991-07-01 1993-01-21 Olin Corporation Palladium alloys having utility in electrical applications
US5236789A (en) * 1991-07-01 1993-08-17 Olin Corporation Palladium alloys having utility in electrical applications

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