GB735999A - Improvements in or relating to the manufacture of electric resistors - Google Patents

Improvements in or relating to the manufacture of electric resistors

Info

Publication number
GB735999A
GB735999A GB29061/53A GB2906153A GB735999A GB 735999 A GB735999 A GB 735999A GB 29061/53 A GB29061/53 A GB 29061/53A GB 2906153 A GB2906153 A GB 2906153A GB 735999 A GB735999 A GB 735999A
Authority
GB
United Kingdom
Prior art keywords
boron
carbon
halogen
carbon compound
resistors
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
GB29061/53A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB735999A publication Critical patent/GB735999A/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
    • H01C17/20—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by pyrolytic processes
    • 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
    • H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
    • 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
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
    • 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
    • H01C17/075—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thin film techniques
    • H01C17/14—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thin film techniques by chemical deposition

Abstract

735,999. Producing carbon-boron resistors. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 21, 1953 [Oct. 23, 1952], No. 29061/53. Class 37. Relates to producing resistors by deposition on to ceramic carriers of carbon and boron by heating the carriers in a gaseous atmosphere containing carbon and boron. According to the invention the proportion of boron in the gaseous atmosphere is controlled by controlling a quantity of chlorine or bromine which reacts with a solid boron-containing material to form boron trihalide thereby controlling the amount of boron converted into boron trihalide. For the boron-containing material alkaline-earth metal borides may be used; also and highly suitable are boron carbide and nitride which can be converted into trihalides by the passage of chlorine vapour or bromine vapour. In the described manufacturing example purified nitrogen is passed through a halogen-carbon compound such as perchlorethylene (C2Cl4) cooled down to 0‹ C. and then through pulverulent boron carbide heated to 1000‹ C. so as to produce the required boron trichloride (BCl3). This gas comprising BCl3 is mixed with the carboncontaining gas and deposition carried out in known manner. The halogen-carbon compound may be caused to act directly on the boroncontaining material so that pyrolysis of the hydrogen-carbon compound and reaction of the halogen with the boron material take place at the same time. Specification 680,977 is referred to.
GB29061/53A 1952-10-23 1953-10-21 Improvements in or relating to the manufacture of electric resistors Expired GB735999A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL735999X 1952-10-23

Publications (1)

Publication Number Publication Date
GB735999A true GB735999A (en) 1955-08-31

Family

ID=19820407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29061/53A Expired GB735999A (en) 1952-10-23 1953-10-21 Improvements in or relating to the manufacture of electric resistors

Country Status (1)

Country Link
GB (1) GB735999A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262601A2 (en) * 1986-09-26 1988-04-06 Sumitomo Electric Industries Limited Thermistor and method for producing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262601A2 (en) * 1986-09-26 1988-04-06 Sumitomo Electric Industries Limited Thermistor and method for producing the same
EP0262601A3 (en) * 1986-09-26 1989-05-24 Sumitomo Electric Industries, Limited Thermistor and method for producing the same

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