Apparatus for measuring the degree of sensitization of metal art

Details Apparatus for measuring the degree of sensitization of metal art Apparatus for measuring the degree of sensitization of metal art

1985-05-29

1986-01-14

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204404, 204412, 324 711, G01N 2702

Patent

active

045644365

ABSTRACT:
An apparatus for measuring the degree of sensitization of metal articles comprises an electrochemical cell in which the potential of a test-piece of the article with respect to a reference electrode is made to vary linearly with time by feeding currents of suitable intensity from the passivation field to the activation field by means of the counter-electrode; a pair of electrodes moves along the test-piece surface with the respective electrode ends kept equidistant and disposed along an axis substantially perpendicular to the test-piece surface, one of them being in contact with said surface; by measuring the potential difference of this pair of electrodes as a function of their position, the local degree of sensitization of the test-piece is obtained.

REFERENCES:
patent: 4006063 (1977-02-01), Ensanian
patent: 4133722 (1979-01-01), Ensanian
patent: 4179349 (1979-12-01), Park
patent: 4515643 (1985-05-01), Knaster

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