GB849305A - Electrical resistance element and method of making same - Google Patents

Electrical resistance element and method of making same

Info

Publication number
GB849305A
GB849305A GB2314957A GB2314957A GB849305A GB 849305 A GB849305 A GB 849305A GB 2314957 A GB2314957 A GB 2314957A GB 2314957 A GB2314957 A GB 2314957A GB 849305 A GB849305 A GB 849305A
Authority
GB
United Kingdom
Prior art keywords
specified
metal
resistor
firing
oxide
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.)
Expired
Application number
GB2314957A
Inventor
Thomas M Place Sr
Thomas M Place Jr
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.)
Beckman Coulter Inc
Original Assignee
Beckman Instruments Inc
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 Beckman Instruments Inc filed Critical Beckman Instruments Inc
Publication of GB849305A publication Critical patent/GB849305A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
    • H01C17/065—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
    • H01C17/06506—Precursor compositions therefor, e.g. pastes, inks, glass frits
    • H01C17/06513—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component
    • H01C17/06553—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component composed of a combination of metals and oxides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/14—Conductive material dispersed in non-conductive inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
    • H01C17/065—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
    • H01C17/06506—Precursor compositions therefor, e.g. pastes, inks, glass frits
    • H01C17/06513—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component
    • H01C17/06526—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component composed of metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/021—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient formed as one or more layers or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient

Abstract

849,305. Resistive coatings; direct connections between conductors. BECKMAN INSTRUMENTS Inc. July 22, 1957, No. 23149/57. Classes 37 and 38(1) [Also in Group XXIII] A resistance element comprises a hightemperature resistant, non- conductive base carrying a fixed resistive coating of 1 to 16 % finely divided noble metal and 84 to 99 % glass having a melting point lower than the metal. As described, the resistive coating 10 is applied to a specified ceramic base 11 by brushing, spraying, stencilling or silk screening a mixture of a specified powdered glass, one or more noble metals and a carrier such as toluol, xyloy, oil, clear lacquer, isopropyl alcohol or water. A flux such as oxide of bismuth, molybdenum or vanadium may be included. The contact resistance may be reduced by adding an opacifier such as oxide of tin, antimony, molybdenum, chromium or zirconium. The resistor is then fired at specified temperatures to provide a finished glossy black coating preferably from 0-127 to 0À076 mm. thick. The noble metals specified, gold, silver, platinum, rhodium, palladium or iridium may be added in powder form or as soluble compounds such as resinates or abietates, dissolved in an essential oil. The oxidizable metals referred to above may also be introduced as soluble compounds. In this case, batches of material may be stored indefinitely if the mixture is heated slowly to 370 ‹C. before being ground and calcined at 475 ‹C. The resulting calcine is ground to produce 325 mesh particles each coated with a thin layer of metal and metal oxide particles. The element shown may be provided with a rotary contact for use as a potentiometer. A fixed resistor comprising a hollow tube 20 is also described. Other embodiments described are a button resistor and an element for a reciprocating potentiometer. Direct connections between conductors. Terminals 12, 23, are applied by firing silver paint. Alternatively terminal wires or ribbons may be placed in openings in the base 11 prior to firing on the layer 10 so that the wire or ribbon will project into the layer 10 and be adhered thereto during the firing process.
GB2314957A 1957-08-13 1957-07-22 Electrical resistance element and method of making same Expired GB849305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB45690A DE1132633B (en) 1957-08-13 1957-08-13 Resistance element for high operating temperatures

Publications (1)

Publication Number Publication Date
GB849305A true GB849305A (en) 1960-09-21

Family

ID=6967704

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2314957A Expired GB849305A (en) 1957-08-13 1957-07-22 Electrical resistance element and method of making same

Country Status (2)

Country Link
DE (1) DE1132633B (en)
GB (1) GB849305A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU48493A1 (en) * 1965-04-28 1966-10-28
US4278725A (en) * 1980-01-21 1981-07-14 Spectrol Electronics Corp. Cermet resistor and method of making same
DE9102576U1 (en) * 1991-03-05 1991-05-23 Hella Kg Hueck & Co, 4780 Lippstadt, De

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE110643C (en) * 1898-08-31
AT137832B (en) * 1931-03-05 1934-06-11 Siemens Ag Wireless electrical resistance.
DE872089C (en) * 1941-05-24 1953-03-30 Siemens Ag Electrical resistance for high operating temperatures
DE882445C (en) * 1942-12-28 1953-07-09 Siemens Ag Process for producing conductive or semiconducting layers

Also Published As

Publication number Publication date
DE1132633B (en) 1962-07-05

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