galvanic couple


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galvanic couple

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This hydrogen generation may be from a galvanic couple, an impressed cathodic current, corrosion of titanium, or severe continuous abrasion of the titanium surface in an aqueous medium.
Selective leaching of nickel from the copper flotation concentrate was possible due to the development of galvanic couple between copper containing chalcopyrititic phase and nickel containing pentlandite.
Because the contact between brass and carbon steel results in a galvanic couple, one question arises: do copper alloy residues, even in small quantities, affect the painting performance?