JPS57179645A - Measurement of corrosion - Google Patents

Measurement of corrosion

Info

Publication number
JPS57179645A
JPS57179645A JP6500681A JP6500681A JPS57179645A JP S57179645 A JPS57179645 A JP S57179645A JP 6500681 A JP6500681 A JP 6500681A JP 6500681 A JP6500681 A JP 6500681A JP S57179645 A JPS57179645 A JP S57179645A
Authority
JP
Japan
Prior art keywords
metal plates
switch
electric charge
capacitor
opened
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
JP6500681A
Other languages
Japanese (ja)
Inventor
Miyuki Yanagisawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6500681A priority Critical patent/JPS57179645A/en
Publication of JPS57179645A publication Critical patent/JPS57179645A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

PURPOSE:To enable quick and continuous measurement of the corrosion rate of metal plates by measuring a decreased rate of the level of an electric charge which is applied in a fixed amount between the metal plates facing each other with a very small clearance. CONSTITUTION:With a switch S6 opened and a switch S8 closed, a fixed amount of an electric charge is applied to a capacitor 5 and then the switch 8 is opened and the switch S6 is closed. When the capacity of the capacitor 5 is set at a value by far small than that of a capacitor formed by the metal plates 1 and 2, the electric charge accumulated in the capacitor 5 shifts between the metal plates 1 and 2 momentarily. When the switchs 6 is opened, the potential between the metal plates 1 and 2 rises instantaneouly at a time t0 by applying a fixed amount of the electric charge between the plates 1 and 2 and then, gradually decreases with the passage of time. The corrasion rate of the metal plates 1 and 2 in the air can be determined by measuring the secular change of the potential.
JP6500681A 1981-04-28 1981-04-28 Measurement of corrosion Pending JPS57179645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6500681A JPS57179645A (en) 1981-04-28 1981-04-28 Measurement of corrosion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6500681A JPS57179645A (en) 1981-04-28 1981-04-28 Measurement of corrosion

Publications (1)

Publication Number Publication Date
JPS57179645A true JPS57179645A (en) 1982-11-05

Family

ID=13274466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6500681A Pending JPS57179645A (en) 1981-04-28 1981-04-28 Measurement of corrosion

Country Status (1)

Country Link
JP (1) JPS57179645A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6285855A (en) * 1985-10-11 1987-04-20 Nok Corp Formation of very small gold electrode
US4708764A (en) * 1984-09-04 1987-11-24 Kernforschungsanlage Julich Gesellschaft Mit Beschrankter Haftung Method of and apparatus for growing crystals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708764A (en) * 1984-09-04 1987-11-24 Kernforschungsanlage Julich Gesellschaft Mit Beschrankter Haftung Method of and apparatus for growing crystals
JPS6285855A (en) * 1985-10-11 1987-04-20 Nok Corp Formation of very small gold electrode

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