PROCESS FOR THE ANTICORROSION TREATMENT OF A SOLID METAL SUBSTRATE AND TREATED SOLID METAL SUBSTRATE CAPABLE OF BEING OBTAINED BY SUCH A PROCESS
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United States of America Patent
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Issued Date -
Sep 11, 2014
app pub date -
Oct 12, 2012
filing date -
Oct 14, 2011
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Abandoned
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Abstract
An anticorrosion treatment process in which applied to an oxidizable surface of a solid metal substrate is a liquid solution, referred to as treatment solution, including: at least one alkoxysilane, and at least one cerium (Ce) cation; in a liquid aqueous-alcoholic composition, the treatment solution being suitable for being able to form, at the surface of the solid metal substrate, a hybrid matrix by hydrolysis/condensation of each alkoxysilane(s) and of each cerium (Ce) cation; the treatment solution having a molar ratio (Si/Ce) of silicon element of the alkoxysilane(s) with respect to the cerium (Ce) cation(s) of between 50 and 500; characterized in that the cerium (Ce) cation(s) has(have) a concentration between 0.005 mol/L and 0.015 mol/L in the treatment solution.
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