Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1975-08-18
1977-02-08
Tung, T.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
204 15, G01N 2746
Patent
active
040071065
ABSTRACT:
The present invention is directed to an improved method of measuring oxygen concentration in molten metal using the galvanic oxygen concentration cell method. It consists of providing a layer of inert gas between the cell electrolyte and the melt, this prevents contamination of the electrolyte while at the same time allows it to be in thermal and chemical equilibrium with the melt, resulting in continuous measurements of oxygen activity from which oxygen concentration may be calculated. Novel probes are disclosed which include a solid electrolyte oxygen concentration cell, a cavity for containing the inert gas adjacent the cell electrolyte to prevent contact between it and the molten metal and a thermocouple for temperature measurements.
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patent: 3400054 (1968-09-01), Ruka et al.
patent: 3752753 (1973-08-01), Fitterer
patent: 3776831 (1973-12-01), Roy
patent: 3791954 (1974-02-01), Noda et al.
patent: 3838021 (1974-09-01), Arbiter
patent: 3864231 (1975-02-01), Richardson
patent: 3864232 (1975-02-01), Handman et al.
Hone Michel
Houot Serge
Canadian Patents and Development Limited
Rymek Edward
Tung T.
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