G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 27/30 (2006.01) G01N 27/28 (2006.01) G01N 27/406 (2006.01) G01N 27/409 (2006.01) G01N 27/416 (2006.01)
Patent
CA 2122014
2122014 9321519 PCTABS00027 A process is disclosed for producing electrochemical sensors made of metal. A contact element made of a metal having a higher melting point than the metal of which the sensor is made is connected to the material of which the sensor is made. A pipe is made of the same metal than the contact element, the pipe is secured in a predetermined, preferably vertical, position. The pipe (1) is filled with a powder produced from the same metal of which the electrode is made and the whole structure is heated up above the melting point of the metal of which the electrode is made in a closed oven in a vacuum or in a protective gas atmosphere. The powdered electrode material melts and the molten powder is cooled down until it solidifies in a vacuum or in the protective gas atmosphere. Alternatively, both ends of the pipe may be closed before heating. Also disclosed is an electrochemical sensor produced according to this process having a sensor surface made of particularly pure magnesium, rare earth metal, gold, platinum or aluminium or of an alloy of such metals, as well as a contact element metallically connected thereto. The electrode material is arranged inside a pipe made of a metal having a higher melting point than the electrode material.
Leszlauer Zoltan
Robic
LandOfFree
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