Novel sintered electrodes
AssigneeDiamond Shamrock Technologies S.A.
InventorsVittorio deNora, Giuseppe Bianchi, Antonio Nidola
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Abstract
Novel electrodes comprising a body formed of a sintered mixture of powders of at least one film-forming metallic material and at least one additive metal selected from the group consisting of Cr, Mn, Re, Fe, Co, Ni, Ca, Ag, Au, Zn, Cd, Ge, Sn, Pb, La and the lanthanide series of the Periodic Table and oxides, metallates and intermetallates thereof and their preparation and electrolysis cells containing the said electrodes as the anode thereof and electrolysis processes using the said electrodes as anodes.
Claims13
An electrode comprising a body formed of a sintered mixture of powders of at least one film-forming metallic material selected from the group consisting of a valve metal and silicon-iron alloys and at least one additive metal selected from the group consisting of Cr, Mn, Re, Fe, Co, Ni, Cu, Ag, Au, Zn, Cd, Ge, Sn, Pb, La and the lanthanide series of the Periodic Table and oxides, metallates and intermetallates thereof, the additive metal at the surface of the electrode being in the oxide form.
An electrode comprised of a body formed of a sintered mixture of powders consisting essentially of (a) 75 to 93% by weight of at least one film-forming metallic material selected from the group consisting of titanium, zirconium, tantalum, vanadium, tungsten, niobium, hafnium, and silicon-iron alloys, (b) 0 to 25% by weight of at least one member of the group consisting of metals and oxides of cobalt, nickel, iron and chromium, (c) 0 to 10% by weight of at least one member of the group consisting of platinum group metals and their oxides and (d) 0 to 4% by weight of titanium dioxide, the sum of (b) and (c) being at least 3% by weight and the sum of (b), (c), and (d) being at least 7% by weight.
Dependencies are inferred from the claim text.