Coating processes – Solid particles or fibers applied – Uniting particles to form continuous coating with...
Reexamination Certificate
2007-08-14
2007-08-14
Bell, Bruce F. (Department: 1746)
Coating processes
Solid particles or fibers applied
Uniting particles to form continuous coating with...
C427S189000, C427S077000, C427S126100, C427S126300, C427S180000, C427S331000, C204S290010, C204S290040, C204S290100, C204S290120, C204S290130, C204S291000, C205S372000, C205S384000, C205S385000, C205S387000
Reexamination Certificate
active
10506202
ABSTRACT:
A method of manufacturing a component, in particular an aluminium electrowinning anode, for use at elevated temperature in an oxidising and/or corrosive environment comprises: applying onto a metal-based substrate layers of a particle mixture containing iron oxide particles and particles of a reactant-oxide selected from titanium, yttrium, ytterbium and tantalum oxides; and heat treating the applied layers to consolidate by reactive sintering of the iron oxide particles and the reactant-oxide particles to turn the applied layer into a protective coating made of a substantially continuous reacted oxide matrix of one or more multiple oxides of iron and the metal from the reactant-oxide. The metal-based substrate comprises at its surface during the heat treatment an integral anchorage-oxide of at least one metal of the substrate. The anchorage-oxide anchors the multiple oxide matrix to the substrate by reacting with the iron oxide and/or the reactant-oxide to form an integral multiple bonding oxide of the metal of the integral anchorage-oxide and iron from the iron oxide and/or the metal of the reactant-oxide. The particle mixture can be applied in a colloidal and/or polymeric slurry.
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De Nora Vittorio
Nguyen Thinh T.
Bell Bruce F.
Deshmukh Jayadeep R
Moltech Invent S.A.
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