Chemistry: electrical and wave energy – Processes and products
Patent
1987-08-12
1989-07-11
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
204406, 204434, 324 711, 324514, 324515, 324558, 324559, G01N 2724
Patent
active
048469360
ABSTRACT:
Disclosed is a method for measuring the metal exposure in a resin covering area of a metal container or a constituent member thereof, which comprises contacting the resin covering area of the metal container or the constituent member thereof with a measuring electrode through an electrolytic solution, relatively moving the resin covering area and the measuring electrode in a certain direction while always holding the electrolytic solution between the measuring electrode and the resin covering area, measuring a leak current between the metal substrate of the metal container or constituent member at predetermined pitches and detecting the metal exposure of the resin covering area as leak currents at respective parts discriminately.
According to this measuring method, the degree of the metal exposure can be easily measured as the leak current at respective parts discriminately, and statistical processing of the measured leak current values can be easily performed.
REFERENCES:
patent: 3106677 (1963-10-01), Edgar
patent: 3210655 (1965-10-01), McGlasson et al.
patent: 4332646 (1982-06-01), Tsurumaru et al.
James A. Plambeck, "Electroanalytical Chemistry", pp. 27, 28, (1982).
Ashina Masato
Kobayashi Hironori
Suzuki Yukio
Tsurumaru Michiko
Tsutsumi Fumihiro
Kaplan G. L.
Toyo Seikan Kaisha Ltd.
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