Hydrogen probe with limited active area

Details Hydrogen probe with limited active area Hydrogen probe with limited active area

1976-08-20

1978-06-06

Tung, T.

Measuring and testing

Gas analysis

Gas chromatography

204195R, 204195P, 324 33, 73 19, G01N 2746, G01N 2762, G01N 710

Patent

active

040928446

ABSTRACT:
An insertion-type hydrogen probe with a defined active length is described. The probe is formed of a thin-walled, hydrogen-permeable material, and a hydrogen-impermeable liner inside the probe blocks out all but the defined active section of the probe. The interior of the probe is subjected to high vacuum, and the hydrogen permeation through the active portion of the probe is determined, for example, by the current output of an ion pump used with the probe. To prevent bimetallic cell interface effects, the probe is constructed so that only a single metal is exposed to the primary environment being studied.

REFERENCES:
patent: 2749293 (1956-06-01), Wahlin
patent: 3357903 (1967-12-01), Lawrence
patent: 3565769 (1971-02-01), Holden et al.
patent: 3835013 (1974-09-01), Grubb et al.
patent: 3886444 (1975-05-01), Roy et al.
patent: 3942546 (1976-03-01), Radd
Norton, "J. of Applied Physics," vol. 11, Apr. 1940, pp. 262, 265-267.

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