GB1103358A - System for checking the composition of ferrous metallic bodies - Google Patents

System for checking the composition of ferrous metallic bodies

Info

Publication number
GB1103358A
GB1103358A GB5271365A GB5271365A GB1103358A GB 1103358 A GB1103358 A GB 1103358A GB 5271365 A GB5271365 A GB 5271365A GB 5271365 A GB5271365 A GB 5271365A GB 1103358 A GB1103358 A GB 1103358A
Authority
GB
United Kingdom
Prior art keywords
copper
sample
tip
unheated
heated
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
GB5271365A
Inventor
John Hiley Morgan
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.)
RICHARDS FOUNDRIES Ltd
Original Assignee
RICHARDS FOUNDRIES 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 RICHARDS FOUNDRIES Ltd filed Critical RICHARDS FOUNDRIES Ltd
Priority to GB5271365A priority Critical patent/GB1103358A/en
Publication of GB1103358A publication Critical patent/GB1103358A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/002—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the work function voltage

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

1,103,358. Electro-physical measurement. RICHARDS FOUNDRIES Ltd. Nov. 14, 1966 [Dec. 11, 1965], No.52713/65. Heading G1N. The composition of a sample of metal, e.g. the silicon content of iron, is determined by measuring the thermoelectric potential generated by a heated and a cold electrode in contact with the sample, the temperature difference between the electrodes being automatically maintained constant. The sample 5 is contacted by hand-held electrode assemblies 2. The heated electrode assembly, Fig. 2 (not shown) consists of copper tip 9 on a steel shaft which carries an electric heating element 10. The tip is connected by lead 19 to one side of a mirror galvanometer 3, the other side of which is connected to the copper tip of the unheated electrode assembly 2 so as to measure the thermoelectric potential of the two thermojunctions formed with the sample 5. Embedded within, but electrically insulated from, the unheated tip is a copper/constantan thermocouple 26, Fig.3 (not shown), the output of which opposes the output of a thermocouple formed by welding a constantan wire 15 to the heated copper tip 9. The difference between these signals controls an automatic regulator 4 to cause the heater 10 to be intermittently energized so as to maintain a constant temperature gradient between the two copper tips. In a modification, Fig.4 (not shown) the unheated electrode is constituted by a copper cup into which the sample to be measured can be placed in the form of powder or drillings.
GB5271365A 1965-12-11 1965-12-11 System for checking the composition of ferrous metallic bodies Expired GB1103358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5271365A GB1103358A (en) 1965-12-11 1965-12-11 System for checking the composition of ferrous metallic bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5271365A GB1103358A (en) 1965-12-11 1965-12-11 System for checking the composition of ferrous metallic bodies

Publications (1)

Publication Number Publication Date
GB1103358A true GB1103358A (en) 1968-02-14

Family

ID=10464997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5271365A Expired GB1103358A (en) 1965-12-11 1965-12-11 System for checking the composition of ferrous metallic bodies

Country Status (1)

Country Link
GB (1) GB1103358A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429048A1 (en) * 1978-06-19 1980-01-18 Huntington Alloys THERMOELECTRIC METAL SORTING DEVICE
FR2672999A1 (en) * 1991-02-20 1992-08-21 Siderurgie Fse Inst Rech Method for determining the content of a metal alloy in one of its elements in solution, such as carbon and nitrogen in extra soft steel
GB2260185A (en) * 1978-12-07 1993-04-07 Secr Defence Metal target discriminator
WO1998028628A1 (en) * 1996-12-20 1998-07-02 Kommercial Bank 'aljba Alliance' Process for testing the purity of the constituent material of an electrically conducting item

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429048A1 (en) * 1978-06-19 1980-01-18 Huntington Alloys THERMOELECTRIC METAL SORTING DEVICE
GB2260185A (en) * 1978-12-07 1993-04-07 Secr Defence Metal target discriminator
GB2260185B (en) * 1978-12-07 1993-09-22 Secr Defence Improvements in or relating to metal target discriminators
FR2672999A1 (en) * 1991-02-20 1992-08-21 Siderurgie Fse Inst Rech Method for determining the content of a metal alloy in one of its elements in solution, such as carbon and nitrogen in extra soft steel
WO1998028628A1 (en) * 1996-12-20 1998-07-02 Kommercial Bank 'aljba Alliance' Process for testing the purity of the constituent material of an electrically conducting item

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