Reference electrode for use at high temperatures and pressures

Details Reference electrode for use at high temperatures and pressures Reference electrode for use at high temperatures and pressures

1977-06-16

1978-09-26

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

G01N 2730

Patent

active

041167988

ABSTRACT:
The invention relates to an improved silver/silver-chloride reference electrode adapted for use in aqueous corrodent solutions at high temperatures and high pressures. The reference electrode provides a useful standard for measuring electrochemical phenomena related to the corrosion process so that metals can be compared on a thermodynamically useful scale. The formation of bubbles within the reference electrode, which can cause open circuit conditions, is substantially avoided by equalization of internal and external pressure through the use of a heat sealing vent means within the electrode body. Ionic conduction between the electrolyte contained within the reference electrode and the corrodent solution is controlled by a bridge containing tightly gripped fibers which are subjected to additional compression during heating and subsequent pressurization.

REFERENCES:
patent: 3152058 (1964-10-01), Hutchinson et al.
patent: 3272731 (1966-09-01), Hutchinson et al.
patent: 3530056 (1970-09-01), Haddad
patent: 3575834 (1971-04-01), Hoole et al.
patent: 3790463 (1974-02-01), Gealt
patent: 3793176 (1974-02-01), Jerrold-Jones
Vermilyea et al., "J. Electrochemical Soc.", vol. 119, No. 1, 1972, pp. 39-43.

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