Process to mitigate stress corrosion cracking of structural materials in high temperature water
AssigneeGeneral Electric Company
InventorsYoung-Jin Kim, Thomas Martin Angeliu, Peter Louis Andresen
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Abstract
A method for mitigating stress corrosion cracking in high temperature water includes introducing catalytic nanoparticles and dielectric nanoparticles to the high temperature water in an amount effective to reduce a electrochemical corrosion potential of the high temperature water.
Claims27
A method for mitigating stress corrosion cracking of a component exposed to high temperature water in a hot water system in which the presence of at least one oxidizing species in the high temperature water raises an electrochemical corrosion potential of the component, comprising:
- introducing a reducing species to the high temperature water;
- introducing catalytic nanoparticles and dielectric nanoparticles into the high temperature water;
- and
- forming a catalytic site and an insulative barrier on or about the component to reduce the electrochemical corrosion potential of the high temperature water.
A method for mitigating stress corrosion cracking of a component exposed to high temperature water in a hot water system in which the presence of at least one oxidizing species in the high temperature water raises an electrochemical corrosion potential of the component, comprising:
- introducing a reducing species to the high temperature water;
- introducing nanoparticles to the high temperature water and forming a colloidal suspension of the nanoparticles, wherein the nanoparticles comprise a mixture of catalytic nanoparticles and dielectric nanoparticles;
- and
- catalytically reducing a concentration of the at least one oxidizing species in the high temperature water and forming a protective barrier about the component.
A method for mitigating stress corrosion cracking of a component exposed to high temperature water in a hot water system in which the presence of at least one oxidizing species in the high temperature water raises an electrochemical corrosion potential of the component, comprising:
- introducing nanoparticles to the high temperature water in an amount effective to reduce a corrosion potential of the high temperature water, wherein the nanoparticles comprise a combination of a catalytic material and a dielectric material.
Dependencies are inferred from the claim text.