Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1974-12-04
1976-09-14
Tung, T.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
204 1T, 204195R, 429 30, 429104, G01N 2746, H01M 2716
Patent
active
039805433
ABSTRACT:
An assembly for insertion in a bath of molten material to form therewith an electrochemical cell for determining the concentration of a constituent of the bath. The assembly is of the type including a body structure of refractory material from which protrudes a first electrically conductive element providing means for establishing an electrical connection with the bath and a reference electrode structure separated from the bath by means of a rigid electrolyte material. Reference electrode structures of this general type may be comprised of a closed end tube of electrolyte material or a tube of electrically non-conductive refractory material having a pellet of electrolyte material closing the immersion end thereof to separate the material of the bath from the means establishing a reference potential. In accordance with one form of applicant's invention the rigid electrolyte material is comprised of a component which is ionically conductive at the operating temperature of the cell which component may be supported within a passage of capillary dimensions between surfaces, or in interstices or on the surface of particles of supporting means having a melting point which is above the operating temperature of the cell. In most instances the ionically conductive component will tend to soften or melt at a temperature below the operating temperature of the cell but be retained in the space of capillary dimensions or in interstices or on the surface of particles of the supporting means which remains solid at cell operating temperature.
REFERENCES:
patent: 3120456 (1964-02-01), Broers
patent: 3619381 (1971-11-01), Fitterer
patent: 3630874 (1971-12-01), Olette et al.
patent: 3642599 (1972-02-01), Franz
patent: 3867312 (1975-02-01), Stephens
Leeds & Northrup Company
MacKay Raymond F.
Moore Phil J.
Tung T.
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