Solid state ion responsive and reference electrodes

Details Solid state ion responsive and reference electrodes Solid state ion responsive and reference electrodes

1978-02-02

1981-07-28

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204195R, 204195G, 204195M, 204195S, 204195B, G01N 2730

Patent

active

042808898

ABSTRACT:
A solid state ion concentration measuring electrode having the ion concentration measuring electrode structure formed by successive layers on an insulating substrate with an outer ion sensitive glass layer being deposited on a substantially thermally matched supporting solid electrolyte layer by RF sputtering. The reference electrode is similarly formed by depositing an outer layer of glass onto a supporting solid electrolyte layer by RF sputtering with the temperature expansion of the glass and supporting solid electrolyte structure being selected to produce a differential expansion causing random cracking of the glass layer during temperature cycling of the referenece electrode. A combination structure is provided wherein the ion concentration measuring electrode and the reference electrode are formed on opposite sides of the same electrically insulating substrate with a thermal compensating element being included in the integrated package.

REFERENCES:
patent: 3133872 (1964-05-01), Miller et al.
patent: 3443311 (1969-05-01), Worobey
patent: 3498901 (1970-03-01), Metz et al.
patent: 3718569 (1973-02-01), Peterson et al.
patent: 3856649 (1974-12-01), Genshaw et al.
patent: 4053381 (1971-10-01), Hamblen et al.
P. D. Davidse et al., Insulation, pp. 41-43, Apr. 1966.

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