DE2264098A1 - METHOD FOR MANUFACTURING THERMOCOUPLE LEGS - Google Patents

METHOD FOR MANUFACTURING THERMOCOUPLE LEGS

Info

Publication number
DE2264098A1
DE2264098A1 DE2264098A DE2264098A DE2264098A1 DE 2264098 A1 DE2264098 A1 DE 2264098A1 DE 2264098 A DE2264098 A DE 2264098A DE 2264098 A DE2264098 A DE 2264098A DE 2264098 A1 DE2264098 A1 DE 2264098A1
Authority
DE
Germany
Prior art keywords
briquettes
thermocouple legs
legs
blocks
annealing
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.)
Granted
Application number
DE2264098A
Other languages
German (de)
Other versions
DE2264098B2 (en
DE2264098C3 (en
Inventor
Wladimir Iwanowitsc Koletwinow
Sergej Nikolajewitsch Ljuskin
Jurij Diomidowitsch Nikolajew
Alexsandra Semenowna Pawlenko
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.)
NIEXI AWTOMOBILNOWO ELEKTROOBO
Original Assignee
NIEXI AWTOMOBILNOWO ELEKTROOBO
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 NIEXI AWTOMOBILNOWO ELEKTROOBO filed Critical NIEXI AWTOMOBILNOWO ELEKTROOBO
Priority to DE19722264098 priority Critical patent/DE2264098C3/en
Priority claimed from DE19722264098 external-priority patent/DE2264098C3/en
Priority to US00320936A priority patent/US3853550A/en
Publication of DE2264098A1 publication Critical patent/DE2264098A1/en
Publication of DE2264098B2 publication Critical patent/DE2264098B2/en
Application granted granted Critical
Publication of DE2264098C3 publication Critical patent/DE2264098C3/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H10N10/01—Manufacture or treatment
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H10N10/80—Constructional details
    • H10N10/85—Thermoelectric active materials
    • H10N10/851—Thermoelectric active materials comprising inorganic compositions
    • H10N10/852—Thermoelectric active materials comprising inorganic compositions comprising tellurium, selenium or sulfur
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S420/00—Alloys or metallic compositions
    • Y10S420/903—Semiconductive

Description

Dip!. 1^"*- '■'■ ■'" "" — senDip !. 1 ^ "* - '■' ■ ■ '""" - sen

:cht: cht

8 Hinein... .-', t-.tir.idorfatr. 108 In ... .- ', t-.tir.idorfatr. 10

530-20.000P530-20,000P

NauSno-issledovatel' ski.1 i eksperimental 'ny;jNauSno-issledovatel 'ski.1 i eksperimental' ny; j Institut avtomobil 'nogo elektrooborudovani.jaInstitute avtomobil 'nogo elektrooborudovani.ja

i avtopriborov. Moskau (UdSSR) i avtopriborov. Moscow (UdS SR)

Verfahren zur Herstellung von ThermoelementschenkelnProcess for the manufacture of thermocouple legs

Die vorliegende Erfindung bezieht sich auf die Technologie der Herstellung von Thermoelementen und insbesondere auf ein Verfahren zur Herstellung von Thermoelementschenkein.The present invention relates to thermocouple manufacturing technology, and more particularly to a method of making thermocouple legs.

Bekannt ist ein Verfahren zur Herstellung von Thermoelementschenkeln aus Blöcken von Legierungen auf Grundlage der festen Lösungen BigTe^-Sb-Te«, und Bi2 Te^-Bi-Se.., das in der Zerkleinerung der Blöcke, im Pressen der so erhaltenen feindispersen Fraktion zu Briketts in Form der herzustellenden Thermoelementschenkel und in nachfolgendem Ausglühen der Briketts in einem gegen den Einfluß des Sauer-A method is known for the production of thermocouple legs from blocks of alloys based on the solid solutions BigTe ^ -Sb-Te «, and Bi 2 Te ^ -Bi-Se .., in the crushing of the blocks, in the pressing of the finely dispersed solutions obtained in this way Fraction to briquettes in the form of the thermocouple legs to be produced and in the subsequent annealing of the briquettes in a against the influence of the acid

530-(P k6 417/1)-Tp-r (8)530- (P k6 417/1) -Tp-r (8)

409829/0426 ORfGlNAL fNSPECTED409829/0426 ORfGlNAL fNSPECTED

— 12 · - 12

Stoffs schützenden Medium besteht. Als solches Medium wendet man Vakuum, inertes Gas oder Wasserstoff an.Protective medium. Vacuum, inert gas or hydrogen are used as such a medium.

Den Nachteil des bekannten Verfahrens stellt die Notwendigkeit dar, beim Ausglühen Vakuumanlagen oder spezielle Kammern einzusetzen, welche gegen die Einwirkung des
Sauerstoffs schützen, zugleich aber die Technologie der
Herstellung von Thermoelementen komplizierter machen.The disadvantage of the known method is the need to use vacuum systems or special chambers during annealing, which are designed to counteract the effects of the
Protecting oxygen, but at the same time the technology of
Making thermocouple manufacturing more complicated.

Das Ziel der vorliegenden Erfindung ist die Beseitigung des genannten Nachteils.The aim of the present invention is to eliminate said drawback.

Der Erfindung liegt die Aufgabe zugrunde, das genannte Verfahren zur Herstellung von Thermoelementschenkeln so zu vervollkommnen, daß beim Ausglühen der Briketts der Einsatz von Vakuumanlagen oder irgendwelchen anderen komplizierten Schutzkammern überflüssig wird, um den technologischen Prozeß der Herstellung von Thermoelementschenkeln zu vereinfachen.The invention is based on the object of the above-mentioned method for producing thermocouple legs to perfect that when annealing the briquettes the use of vacuum systems or any other complicated Protective chambers become superfluous to the technological process of the manufacture of thermocouple legs simplify.

Diese Aufg be wird erfindungsgemäß dadurch gelöst,
daß das Ausglühen der Briketts in pulverförmigem Graphit
in einem dickwandigen Metallbecher an der Luft erfolgt.This task is achieved according to the invention by
that the annealing of the briquettes in powdered graphite
in a thick-walled metal beaker in the open air.

Das Verfahren zur Herstellung von ThermoelementSchenkeln, das in Übereinstimmung mit der Erfindung verwirklicht wird, macht den Einsatz von komplizierten Ausrüstungen für die Durchführung des AusglUhens überflüssig.The process of making thermocouple legs, which is realized in accordance with the invention makes the use of complicated equipments for there is no need to carry out annealing.

Die Erfindung wird nachstehend anhand der Beschreibung eines konkreten Ausführungsbeispiels erläutert.The invention is explained below on the basis of the description of a specific exemplary embodiment.

Badbath

409 8 2 9/0426409 8 2 9/0426

Zur Herstellung von Thermoelementschenkeln des p-Typs verwendet man Blöcke der Legierungen mit folgender Zusammensetzung: 76 Molprozent Sb_Te„ und 24 Molprozent Bi2Te,, und 3 Gewichtsprozent Te, bezogen auf das Gesamtgewicht der Ausgangsbestandteile, und zur Herstellung von Thermoelementschenkeln des n-Typs: 80 Molprozent Bi3Te., und 20 Molprozent Bi_Se_ und 0,15 Gewichtsprozent ZnCIp, bezogen auf das Gesamtgewicht der Ausgangsbestandteile.For the production of thermocouple legs of the p-type one uses blocks of the alloys with the following composition: 76 mol percent Sb_Te "and 24 mol percent Bi 2 Te" and 3 weight percent Te, based on the total weight of the starting components, and for the production of thermocouple legs of the n-type : 80 mol percent Bi 3 Te., And 20 mol percent Bi_Se_ and 0.15 percent by weight ZnClp, based on the total weight of the starting components.

Die Blöcke werden zunächst einer Zerkleinerung bis zur Erhaltung einer Fraktion mit einem Teilchendurchmesser von höchstens 0,5 mm unterworfen. Dann wird die so erhaltene Fraktion in Preßformen geschüttet und bei ZimmertemperaturThe blocks are first crushed to obtain a fraction with a particle diameter of subjected to a maximum of 0.5 mm. Then the fraction thus obtained is poured into compression molds and kept at room temperature

unter einem Druck P von 9 t/cm gepreßt. Die durch die Pres· sung erhaltenen Briketts werden ausgeglüht. Dazu werden diese Briketts in einen dickwandigen Metallbecher eingelegt, in welchen vorher feindisperser Graphit (als 1 bis 2 cm dicke Schicht) eingeschüttet ist. Der restliche Raum wird ebenfalls mit Graphit aufgefüllt, der unter einem geringen Druck verdichtet wird. Der Metallbecher wird mit einem Deckel verschlossen und in einen Glühofen eingesetzt. Die Temperaturkontrolle erfolgt mit Hilfe eines Thermoelementes, welches in die in dem Becher angebrachte Bohrung eingesetzt wird. Die Wärmebehandlung von Schenkeln des p-Typs nimmt man bei 375 0C im Laufe von 3 Stunden, die von Schenkeln des η-Typs bei 36O 0C im Laufe von 2 Stunden vor.pressed under a pressure P of 9 t / cm. The briquettes obtained by pressing are calcined. For this purpose, these briquettes are placed in a thick-walled metal cup in which finely dispersed graphite (as a 1 to 2 cm thick layer) has been poured beforehand. The rest of the space is also filled with graphite, which is compressed under a low pressure. The metal cup is closed with a lid and placed in an annealing furnace. The temperature is controlled with the help of a thermocouple, which is inserted into the hole made in the cup. The heat treatment of limbs of the p-type is taken at 375 0 C in the course of 3 hours, the legs of the η-type at 36O 0 C in the course of 2 hours.

Die thermoelektrische Effektivität der nach dem beschriebenen Verfahren hergestellten Schenkelproben mit dem p- und dem n-Leitungstyp liegt höher als bei den Proben, die im Vakuum nach der bekannten Technologie bzw. an der Luft wärmebehandelt wurden.The thermoelectric effectiveness of the thigh samples produced by the method described with the p- and n-conductivity type is higher than in the samples, which have been heat-treated in a vacuum according to the known technology or in the air.

Claims (1)

PatentanspruchClaim Verfahren zur Herstellung von Thermoelementschenkein aus Blöcken von Legierungen auf der Grundlage der festen Lösungen BigTe.-Sb Te„ oder Bi3Te<,-Bi_Se~, das in der Zerkleinerung der Blöcke, im Pressen der so erhaltenen feirtdispersen Fraktion zu Briketts in Form der herzustellenden Thermoelementschenkel und in nachfolgendem Ausglühen der Briketts in einem gegen den Einfluß des Sauerstoffs schützenden Medium besteht, dadurch gekennzeichnet, daß das Ausglühen der Briketts in pulverförmigem Graphit in einem dickwandigen Netallbecher an der Luft erfolgt. Process for the production of thermocouple legs from blocks of alloys on the basis of the solid solutions BigTe.-Sb Te "or Bi 3 Te <, - Bi_Se ~, which consists in the comminution of the blocks, in the pressing of the thus obtained finely dispersed fraction into briquettes in the form of the thermocouple legs to be produced and the subsequent annealing of the briquettes in a medium protecting against the influence of oxygen, characterized in that the annealing of the briquettes takes place in powdered graphite in a thick-walled metal cup in the air. 409829/0426409829/0426
DE19722264098 1972-12-29 1972-12-29 Process for the manufacture of thermocouple legs Expired DE2264098C3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19722264098 DE2264098C3 (en) 1972-12-29 Process for the manufacture of thermocouple legs
US00320936A US3853550A (en) 1972-12-29 1973-01-04 Method for fabricating bimetallic members of thermoelements by sintering powdered compacts in the presence of graphite

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722264098 DE2264098C3 (en) 1972-12-29 Process for the manufacture of thermocouple legs
US00320936A US3853550A (en) 1972-12-29 1973-01-04 Method for fabricating bimetallic members of thermoelements by sintering powdered compacts in the presence of graphite

Publications (3)

Publication Number Publication Date
DE2264098A1 true DE2264098A1 (en) 1974-07-18
DE2264098B2 DE2264098B2 (en) 1976-06-16
DE2264098C3 DE2264098C3 (en) 1977-01-27

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Also Published As

Publication number Publication date
US3853550A (en) 1974-12-10
DE2264098B2 (en) 1976-06-16

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee