JPS57179645A - Measurement of corrosion - Google Patents
Measurement of corrosionInfo
- 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
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.
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)
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 |
-
1981
- 1981-04-28 JP JP6500681A patent/JPS57179645A/en active Pending
Cited By (2)
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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